SERVICE MANUAL
All-in-one printer, scanner, and copier
EPSON STYLUS Scan 2500
®
SEIJ 99007
EPSON STYLUS Scan 2500
Revision A
PRECAUTIONS
There are cautionary notes throughout the text to help you avoid personal injury or equipm ent dam age.
Signals a precaution w hich, if ignored, could result in
W
A
R
N
I
N
G
Signals a precaution w hich, if ignored, could result in
damage to equipment.
C
A
U
T
I
O
N
serious or fatal personal injury. Great caution should be
exercised in perform ing procedures preceded by a
WARNING heading.
Always observe the m easures listed below when perform ing repair or m aintenance procedures.
WARNING
1. Always disconnect the product from both the power source and host com puter before perform ing any m aintenance or repair procedure.
2. No work should be perform ed on the unit by persons unfam iliar with basic safety m easures dictated for all electronics technician s in their line of work.
3. In perform ing testing described in this m anual, do not connect the unit to a power source until instructed to do so. When the po wer supply cable m ust be
connected, use extrem e caution in working on the power supply and other electronic com ponents.
CAUTION
1. Repairs on EPSON products should be perform ed only by an EPSON-certified repair technician.
2. Make certain that the source voltage is the sam e as the rated voltage listed on the serial num ber/rating plate. If the EPSON pro duct has a prim ary AC rating
different from the available power source, do not connect it to the power source.
3. Always verify that the EPSON product has been disconnected from the power source before rem oving or replacing printed circuit bo ards and/or individual
chips.
4. To protect sensitive m icroprocessors and circuitry, use static discharge equipm ent, such as anti-static wrist straps, when acces sing internal components.
5. Replace malfunctioning com ponents only with those components recom mended by the manufacturer; introduction of second-source ICs or other
nonapproved com ponents may damage the product and void any applicable EPSON warranty.
3
EPSON STYLUS Scan 2500
Revision A
PREFACE
This manual describes basic functions, theory of electrical and m echanical operations, m aintenance and repair procedures of EPSON STYLUS Scan 2500. The
instructions and procedures included herein are intended for the experienced repair technicians, and attention should be g iven t o the precautions on the
preceding page. The chapters are organized as follows:
CHAPTER 1.
“Product Description”
Provides a general overview and specifications of the product.
CHAPTER 2.
“Operating Principles”
CHAPTER 3.
“Troubleshooting”
Provides step-by-step procedures for troubleshooting.
CHAPTER 4.
“Disassem bly & Assem bly”
Describes step-by-step procedures for disassem bling and assem -
bling the product.
CHAPTER 5.
“Adjustm ent”
Provides Epson-approved m ethods for adjustm ent.
CHAPTER 6.
“Maintenance”
Provides preventive m aintenance procedures and the lists of Epson-
approved lubricants and adhesives required for servicing the prod-
uct.
CHAPTER 7.
“Appendix”
Provides the follow ing additional inform ation for reference:
• EEPROM Address Map
• Connector Pin Assignm ent
• Schem atics
• Circuit Diagram s
4
EPSON STYLUS Scan 2500
Revision A
Revision Status
Revision
Revision A
Issued Date
Description
October 5, 1999
First release
5
EPSON STYLUS Scan 2500
Revision A
6
EPSON STYLUS Scan 2500
Revision A
Contents
Physical Characteristics ............................................................................. 32
Dim ensions ............................................................................................ 32
Weight .................................................................................................... 32
Product Description
Features ....................................................................................................... 10
General Specifications ............................................................................... 10
Local copy .............................................................................................. 10
Scan area ................................................................................................ 11
Print area ................................................................................................ 12
Printing ................................................................................................... 13
Input data buffer .................................................................................... 13
Control codes ......................................................................................... 13
Paper feed .............................................................................................. 13
Paper....................................................................................................... 14
Ink ........................................................................................................... 15
Operating Principles
General ........................................................................................................ 34
Printer Mechanism Operation ................................................................... 34
Printing Mechanism .............................................................................. 35
Printing Process ..................................................................................... 37
Carriage Mechanism and Motor .......................................................... 38
Paper Feeding Mechanism ................................................................... 40
Ink System ............................................................................................. 46
Pum p, Carriage Lock, Head Cleaner Mechanism ................................ 46
Cap Mechanism ..................................................................................... 49
Scanner........................................................................................................ 16
Com m on ...................................................................................................... 17
Electrical specifications ......................................................................... 17
Safety, EMC............................................................................................ 18
Environm ental conditions..................................................................... 18
Resistance to electric noise .................................................................. 19
Reliability................................................................................................ 19
Acoustic noise........................................................................................ 19
Scanner Principles ...................................................................................... 50
Carriage Unit.......................................................................................... 50
Carriage Operation ................................................................................ 51
Local and PC Copy Principles .................................................................... 52
Local copy process ................................................................................ 52
PC copy process .................................................................................... 53
Interfaces ..................................................................................................... 20
Printer Interface ..................................................................................... 20
Scanner interfaces ................................................................................. 22
Electrical Circuit Operating Principles ...................................................... 54
B102 PSB/PSE Board ............................................................................. 55
B102 MAIN Board .................................................................................. 57
Control Panel............................................................................................... 24
Buttons ................................................................................................... 24
Indicators and LCD Display................................................................... 27
Initialization ............................................................................................ 28
Troubleshooting
Unit Level Troubleshooting ....................................................................... 61
Printer/Scanner does not operate at power on ................................... 62
Error is detected .................................................................................... 63
Failure occurs during printing .............................................................. 63
Printer does not feed paper correctly .................................................. 64
Control panel operation is abnorm al................................................... 64
Settings Menu ............................................................................................. 29
Stylus Scan Errors ...................................................................................... 30
Options ........................................................................................................ 31
Local Copy.............................................................................................. 31
Scanning ................................................................................................ 31
7
EPSON STYLUS Scan 2500
Revision A
Printer Related Troubleshooting ............................................................... 65
Scanner Troubleshooting .......................................................................... 69
Troubleshooting Motors and Sensors ...................................................... 73
Adjustment
Required Adjustm ents ............................................................................. 113
Adjustm ent Tools Required ................................................................ 114
Printer Adjustm ent ................................................................................... 114
Printer hardware adjustm ents ............................................................ 114
Disassembly & Assembly
Using the Service-Adjustm ent Program ................................................. 116
Installing the program ........................................................................ 116
Openning the Start-up m enu ............................................................. 117
Initial Ink Charge Operation ................................................................ 122
Bi-D Adjustm ent .................................................................................. 122
Head Cleaning Operation ................................................................... 123
Head Voltage ID Input ......................................................................... 124
Head Angular Adjustm ent .................................................................. 124
Ink draining .......................................................................................... 126
Overview ..................................................................................................... 75
Precautions for Disassem bling the Printer .......................................... 75
Tools ....................................................................................................... 77
Specification for Screws ....................................................................... 77
Service Checks After Repair................................................................. 79
Disassem bly Procedures ............................................................................ 81
Rem oving the Housing ............................................................................... 82
Rem oving the rear cover ...................................................................... 82
Rem oving the top cover........................................................................ 83
Rem oving the control panel assem bly ................................................ 83
Rem oving the side covers .................................................................... 84
Rem oving the scanner support fram e ................................................. 84
Rem oving the paper eject assem bly .................................................... 85
Rem oving the power supply board upper fram e ............................... 86
Rem oval of the B102 PSB/PSE Board .................................................. 87
Rem oving the printer m echanism ....................................................... 88
Scanner Adjustm ent................................................................................. 126
Maintenance
Overview ................................................................................................... 129
Cleaning ............................................................................................... 129
Lubrication ........................................................................................... 129
Rem oval of the Circuit Board Tray ............................................................ 90
Appendix
Rem oval of the Printer Consum ables ....................................................... 91
Rem oving the cleaning assem bly (Pum p and Cap)............................ 93
Connector .................................................................................................. 141
Board Connector Sum m ary ................................................................ 142
Connector Pin Assignm ent ................................................................. 143
Disassem bling the Printer Mechanism ..................................................... 95
Rem oving the Printhead Unit ............................................................... 95
Rem oving the PF Motor Assem bly ...................................................... 97
Rem oving the CR Motor Assem bly...................................................... 98
Rem oving the ASF Assem bly ............................................................... 99
Rem oving the Carriage Assem bly ..................................................... 103
Rem oving the PF Roller Assem bly..................................................... 105
Rem oving the PE Paper Detector Assem bly ..................................... 107
Rem oving the HP Detector ................................................................. 108
EEPROM Address Map............................................................................. 146
Exploded Diagram s .................................................................................. 152
Parts List.................................................................................................... 162
Com ponent Layouts ................................................................................. 167
Circuit Diagram s ....................................................................................... 172
Disassem bly of the Scanner Mechanism ............................................... 108
Rem oving the scanner ........................................................................ 109
Rem oving the scanner m otor ............................................................. 111
8
EPSON Stylus Scan 2500
Revision A
1.1 Features
1.2 General Specifications
The following specifications apply to the EPSON Stylus Scan 2500.
High quality local copy
1.2.1 Local copy
1. Local copy
Three color copy modes
Normal, Fine, and Photo
Table 1-1. Local Copy Specifications
“Photo quality copy by Photo paper” enabled
Scan
res.
Output
m ode
Print
res.
Micro
Weave
Head
Media
seq.
Mode
Dot Size
Two B/W copy m odes
High speed local copy
Normal B/W copy m ode
Normal color copy mode
Normal, Fine
Norm al 300x300
Fine 600x300
Gray
Gray
360x360
720x720
Off
On
Norm al
Variable
Bi-D Norm al
Bi-D Norm al
B/W
Max. 2.4 PPM (using “Mem o” pattern)
Max. 1.2 PPM (using “DTP” pattern)
Full
color
Norm al 300x300
360x360
720x720
720x720
Off
On
On
Norm al
Variable
Bi-D Norm al
Bi-D Norm al
Local copy settings from the control panel
Full
color
Enlargement
50~200%
Color Fine
600x600
600x600
Multiple copies
Brightness
1~20 copies
-2 ~ 2 (five steps)
Full
color
Photo
Variable Uni-D Photo
Copy size protection
Letter/Half Letter/5 x 8”
A4/B5/A6
Output m ode = data from the scanner ASIC to the printer
(Copy size protection prevents the printhead from firing ink onto the
platen in cases where the paper size loaded in the printer does not
match the selected paper size.)
2. Enlargement: Default
Enlargem ent
100%
120, 141, 200%
50, 70, 80, 93%
Reduction
(not continuous)
PC Copy settings (determ ined from software application)
Auto Photo Fine
Auto Enlarge
3. Brightness
one)
-2 (Darkest) ~ 0 (Default) ~ +2 (Lightest) (increm ents of
Auto Layout
4. Multiple Copies 1~20 copies (one page at a tim e when using the ADF)
Background reduction
5. Copy size
Max. copy size
216 x 297m m (8.5 x 11.7inches)
(Top, bottom, and both sides
need 3mm m argins)
A4/B5/A6 (A-size version)
Letter/Half Letter/5x8” (Letter
size version)
Installed functions are the sam e as or equivalent to the EPSON Stylus
Color 740 and the GT-7000.
Copy size protection
Sm all footprint
212 x 517 x 414 m m (HWD) m achine only
300 x 517 x 575 mm (HWD) parts extended
Product Description
Features
10
EPSON Stylus Scan 2500
6. Printing paper size Normal paper
Photo paper
Revision A
A4/Letter/A5/Executive
Table 1-2. Scan Area
Half letter/B5/A6/Index card
5x8”/8 x10”/Post card/Legal
A4/ Letter/4x5”/Post card
Docum ent
size
PW
PL
LM
RM
TM
(top)
BM
(bottom )
(w idth) (length)
(left)
(right)
at least
3m m
at least
3m m
at least
3m m
at least
3m m
A4
210m m 297m m
1.2.2 Scan area
at least
3m m
at least
3m m
at least
3m m
at least
3m m
Letter
216m m 279m m
PW
Docum ent
edge (scale
edge)
RM
LM
Starting scan
position (1st bit)
TM
Scanning Area
PL
BM
Figure 1-1. Scan Area
Product Description
General Specifications
11
EPSON Stylus Scan 2500
Revision A
1.2.3 Print area
Table 1-3. Print Area
Docum ent
PW
PL
LM
RM
TM
BM
PW
RM
at least
3m m
at least
3m m
at least
3m m
at least
3m m
A4
210m m 297m m
216m m 279m m
182m m 257m m
216m m 356m m
LM
Paper feed direction
Printable Area
at least
3m m
at least
3m m
at least
3m m
at least
3m m
Letter
B5
TM
at least
3m m
at least
3m m
at least
3m m
at least
3m m
at least
3m m
at least
3m m
at least
3m m
at least
3m m
Legal
PL
BM
Figure 1-2. Print Area
Product Description
General Specifications
12
EPSON Stylus Scan 2500
Revision A
1.2.4 Printing
1.2.6 Control codes
ESC/P Raster
Print m ethod
Drop On Dem and ink jet
Epson Remote Com mand
Nozzle configuration m onochrom e 144 nozzles (48 x 3 staggered)
color 48 nozzles each (cyan, m agenta, yellow)
1.2.7 Paper feed
Print direction
Bi-direction with logic seeking
1. Feeding m ethod
2. Line spacing
3. Paper path
Friction feed with ASF
1/6 inch or program mable at 1/360
Print speed & printable colum ns
Table 1-4. Character code
cut-sheet
ASF (top enter, front out)
Character pitch
Printable colum ns
LQ speed
4. Feed speed
2.36 inch/sec. normal/ continuous
10 CPI (Pica)
80
200 CPS
4.5 inch/sec.
fast/continuous
Table 1-5. Raster Graphics m ode
Horizontal
resolution
Printable area
Available dots
CR speed
180 dpi
360 dpi
720 dpi
8.26 inch
8.26 inch
8.26 inch
1488
2976
5952
20 IPS
20 IPS
20 IPS
1.2.5 Input data buffer
64Kbytes
Product Description
General Specifications
13
EPSON Stylus Scan 2500
Revision A
1.2.8 Paper
LM
RM
Cut-sheets
size:
A4 210(W) x 297m m (L) (8.3 x 11.7”)
Letter 216 x 279m m (8.5 x 11.0”)
B5 182 x 257m m (7.2 x 10.1”)
TM
Legal 216 x 356m m (8.5 x 14.0”)
Statem ent 139.7 x 215.9m m (5.5 x 8.5”)
Executive 184.2 x 266.7m m (7.25 x 10.5”)
Photo paper 101.6 x 152.4m m (4 x 6”)
thickness:
weight:
0.08~0.11mm (0.003~0.004”)
64g/m2~90g/m2 (17~24lb.)
Printable Area
BM
quality:
Exclusive paper, bond paper, PPC
OHP sheets, Glossy paper
size:
A4 210(W) x 297m m (L) (8.3 x 11.7”)
Letter 216 x 279m m (8.5 x 11.0”)
Figure 1-3. Printable Area for Envelopes
Envelope printing is only supported at normal tem perature.
Load long edge first.
thickness:
0.075~0.085mm (0.003~0.0033”)
NOTE: Transparency printing is only supported at norm al
Table 1-6. Envelope Margin
tem perature.
Left Margin
(m in.)
Right Margin
(m in.)
Top Margin
(m in.)
Bottom Margin
(m in.)
Size
Envelopes
size:
No.10 241(W) x 104.8m m (H) (9.5 x 4.125”)
DL 220 x 110m m (8.7 x 4.3”)
C6 162 x 114m m (6.4 x 4.5”)
#10
DL
C6
3 m m (0.12”) 28 m m (1.10”)
3 m m (0.12”)
3 m m (0.12”)
3 m m (0.12”)
14 m m (0.55”)
14 m m (0.55”)
14 m m (0.55”)
3 m m (0.12”)
3 m m (0.12”)
7 m m (0.28”)
3 m m (0.12”)
thickness:
weight:
0.16~0.52mm (0.006~0.02”)
45g/m2~75g/m2 (12~20lb.)
Index cards
size:
A6 index 105(W) x 148m m (L) (4.1 x 5.8”)
A5 index 148 x 210m m (5.8 x 8.3”)
5x8” index 127 x 203m m (5.0 x 8.0”)
10x8” index 254 x 203m m (10.0 x 8.0”)
quality:
Plain paper, bond paper, Air m ail
thickness:
less than 0.23mm (0.0091”)
Product Description
General Specifications
14
EPSON Stylus Scan 2500
Revision A
2. Ink cartridge (color)
Type:
1.2.9 Ink
Exclusive cartridge
1. Ink cartridge (black)
Colors:
Magenta, cyan, and yellow
Type:
Exclusive cartridge
Print capacity:
Ink life:
300 pages/A4 (360 dpi, 5% duty each color)
Two years from production date
Color:
Black
Print capacity:
Ink life:
900 pages/A4 (ISO/IEC 10561 Letter pattern 360dpi
Two years from production date
Storage temperature:
-20~40°C (storage, less than a month at 40°C)
-30~40°C (packing storage, less than m onth at 40°C)
-30~60°C (transit, within 120 hours at 60°C and
within a m onth at 40°)
Storage temperature:
-20~40°C (storage, less than a m onth at 40°C)
-30~40°C (packing storage, less than m onth at 40°C)
-30~60°C (transit, within 120 hours at 60°C and
within a month at 40°)
Dimensions:
42.9 (W) x 52.7 (D) x 38.5m m (H)
Dim ensions:
27.8 (W) x 52.7 (D) x 38.5m m (H)
27.8
42.9
38.5
38.5
Figure 1-5. Color Ink Cartridge
Figure 1-4. Black Ink Cartridge
NOTE: Ink cartridges are consum able products and cannot by any
m eans be refilled.
Do not use cartridges that have passed their expiration date.
Ink will freeze at less than -4°C but can be used after thawing
for three hours at room tem perature.
Product Description
General Specifications
15
EPSON Stylus Scan 2500
Revision A
Line art
Fixed threshold
TET
1.3 Scanner
Product type
Flat-bed color im age scanner
Digital halftoning
(Bi-level, Quad-level)
AAS
Error diffusion three modes (A,B,C)
Sub scan m ethod
Photoelectric device
Max. scan area
Movement of scan head
Color CCD line sensor
Dither (resident) four m odes (A,B,C,D)
Dither (user defined) two modes (A,B)
8.5 x 11.7” (216 x 297m m )
5100 x 7020 pixels (600dpi)
Interface
Light source
Option
USB and IEEE1284.4
Max. effective pixels
Scan resolution
White cold cathode fluorescent lamp
m ain = 600dpi
sub = 1200dpi
TPU (for GT-7000)
ADF (for GT-7000)
Output resolution
50~4800 dpi (1dpi increm ents)
(4800 dpi at 200% reaches the lim itation of
m aximum 16,368 pixels at 9600 dpi for m ain scan)
Scan speed (600dpi, Draft mode)
Color = 8.1m sec/line
Monochrome (bi-level) = 2.7msec/line
By the CCD color filter
ESC/I - B7
Color separation
Com mand level
Zoom
50~200% (1% increments)
Pixel depth
8 bits/pixel/color (input 12 bits/pixel/color,
output 8 bits/pixel/color)
Gamma correction
Color correction
CRT two levels (A,B)
PRINTER three levels (A,B,C)
User defined = one level
Im pact-dot printer
Thermal printer
Ink-jet printer
CRT display
User defined
Brightness
Seven levels
Product Description
Scanner
16
EPSON Stylus Scan 2500
Revision A
1.4.2 Safety, EMC
1.4 Com m on
Safety
UL1950 (UL)
CSA C22.2 No. 950 (CSA)
EN60950 (VDE)
IEC950 (ROSTEST, PSB)
1.4.1 Electrical specifications
Rated voltage
Input voltage
Rated current
AC 100~120V
AC 220~240V
EMC
FCC Part15 Subpart B Class B
CSA C108.8 Class B
AS/NZS3548 Class B
CISPR Pub22 Class B
CNS13438 Class B
AC 100~120V ±10%
AC 220~240V ±10%
0.7A (AC 100~120V ±10% m odel)
0.4A (AC 220~240V ±10% m odel)
CE Marking
Rated frequency range 50~60 Hz
Low voltage directive 73/23/EEC
EMC Directive 89/336/EEC
EN60950
EN55022 Class B
EN61000-3-2
EN61000-3-3
EN50082-1
Input frequency range
Power consum ption
Insulation resistance
49.5~60.5 Hz
Approx. 32W during Local-copy printing
10M at 500V DC
Ω
IEC 801-2/801-3/801-4
(between AC line and chassis)
Dialectic strength
AC 1.5kV, 1m in
(between AC line and chassis)
Product Description
Com m on
17
EPSON Stylus Scan 2500
Revision A
1.4.3 Environm ental conditions
1.4.4 Resistance to electric noise
Temperature
Hum idity
10~35°C (operating, see figure below)
-20~60°C (non-operating, in packaging)
One month at 40°C
Static electricity
panel - 10kV
metal - 7kV/150pF, 150
Ω
120 hours at 60°C
1.4.5 Reliability
Total print volume
Printhead life
20~80% RH (operating, without condensation, see
figure below)
5~85% RH (non-operating, in packaging without
condensation)
60,000 pages (A4, Letter)
4 billion dots/nozzle
MCBF 30,000 cycles
Scan head
Resistance to shock
1 G, within one ms (operating)
2 G, within two m s (non-operating, in packaging)
1.4.6 Acoustic noise
Resistance to vibration 0.15G (operating)
0.50G (non-operating, in packaging)
Level
Approx. 46 dB (local copy with no ADF)
Approx. 50 dB (local copy with ADF)
(According to ISO7779)
90
80
70
60
50
40
30
Hum idity (%)
20
10
10
20
27 30 35 40
Tem perature (°C)
Figure 1-6. Hum idity and Tem perature
Product Description
Com m on
18
EPSON Stylus Scan 2500
Revision A
Packet
Refer to the IEEE-1284 Standard for Data Delivery
and Logical Channels for IEEE Std. 1284.4 Interface
(Draft D1.50)
1.5 Interfaces
This section is divided into printer and scanner interface specifications. See
the following section for printer interface details or see “Scanner interfaces”
on pag e22 for scanner interface details.
Refer to the IEEE-1284 specification
Signal level
TTL compatible level (IEEE-1284 Level 1 device)
Refer to the IEEE-1284 specification
Data trans. timing
1.5.1 Printer Interface
2. Connector pin assignment and signals
Refer to the IEEE-1284 specification
PARALLEL
3. Data transm ission timing
BUSY signal is set high before setting either -ERROR low or PE high, and held
high until all these signals return to their inactive state.
Refer to the IEEE-1284 specification
4. Extensibility Request:
BUSY signal is at high level in the following cases:
When input data buffer is full
The printer responds affirmatively when the extensibility request values
are 00H or 04H, which m ean
00H
04H
Request nibble m ode reverse channel transfer
Request Device ID;
During -INIT signal is at low level or during hardware initialization
During printer error (see -ERROR signal)
Return data using nibble m ode reverse channel transfer
Device ID:
When the parallel interface is not selected
The printer sends the following device ID string when requested.
ERROR signal is at low level when the printer is in one of the following states:
IEEE 1284.4 is enabled,
Printer hardware error (fatal error)
Paper-out error
[00H][5EH]
MFG:EPSON;
CMD:ESCPL2,BDC,D4,SPC;
MDL:Stylus[SP]Scan[SP]2500;
CLS:PRINTER
Paper-jam error
Ink-out error
DES:EPSON[SP]Stylus[SP]Scan[SP]2500;
PE signal is at high level during paper-out error.
1. Specification
Note: (1)[00H] denotes a hexadecimal value of zero
(2)MDL value depends on the EEPROM setting.
Transm ission m ode
Synchronization
Handshaking
8 bit parallel, IEEE-1284 compatibility/nibble mode
Refer to the IEEE-1284 specification
Refer to the IEEE-1284 specification
Product Description
Interfaces
19
EPSON Stylus Scan 2500
Revision A
USB
PREVENTING DATA TRANSFER TIME-OUT OF HOSTS
Standard
:based on
Generally, hosts abandon data transfer to peripherals when a peripheral is
continuously in the busy state for dozens of seconds. To prevent hosts from
entering this kind of tim e-out period, the printer slows down the data
reception rate to around several bytes per m inute, even if the printer is in the
busy state. This slowdown starts when the remaining open buffer area
decreases to several hundred bytes. The Stylus Scan enters a continuous
busy state if the input buffer becomes full.
“Universal Serial Bus Specifications Revision 1.0”
“Universal Serial Bus Device Class Definition for
Printing Devices Version 1.0”
Bit rate
:12Mbps (Full speed device)
:NRZI
Data encoding
Adaptable connector
:USB series B
INTERFACE SELECTION
Suggested cable length :2 m eters
The Stylus Scan has two built-in interfaces; the USB and parallel interfaces.
The interface in use is selected autom atically.
Table 1-7. USB Configuration
Autom atic selection
Pin no. Signal nam e
In/ Out
Description
When the Stylus Scan is turned on, it initializes and then goes into an idle
state. During this idle period the printer scans the interfaces for incoming
data. The interface that receives data first is selected.
Cable power, m ax. power consum ption is
100m A
1
VCC
-
2
3
4
-Data
+Data
bi-directional data
When the host stops transferring data and the printer is in the stand-by
state for a certain amount of tim e, the printer returns to the idle state. As
long as the host sends data or the printer interface is in the busy state, the
interface selection does not change.
bi-directional data, pull up to +3.3V via 1.5KΩ resistor
Ground
-
Cable ground
Pin #1
Pin #2
Interface status and selection
When the parallel interface is not selected, the interface goes into the
busy state. When the printer initializes or returns to the idle state, the
parallel interface goes into the ready state. Be aware that an interrupt
signal such as the -INIT signal only takes affect on the parallel interface
when the parallel interface is selected.
Pin #3
Pin #4
Figure 1-7. USB Pin Configuration
Product Description
Interfaces
20
EPSON Stylus Scan 2500
Revision A
1.5.2 Scanner interfaces
IEEE1284.4 PROTOCOL
The packet protocol described by IEEE1284.4 standard allows a device to
carry on multiple exchanges or conversations which contain data and/or
control inform ation with another device at the sam e tim e across a single
point-to-point link. The protocol is not, however, a device control language. It
does provide basic transport-level flow control and multiplexing services. The
multiplexed logical channels are independent of each other and blocking of
one has no effect on the others. The protocol operates over IEEE1284.
PARALLEL
1. Specification
Transmission m ode
Synchronization
Handshaking
Packet
8 bit parallel, IEEE-1284 compatibility/nibble mode
Refer to the IEEE-1284 specification
Refer to the IEEE-1284 specification
Autom atic Selection
An initial state is com patible interface and starts IEEE1284.4
com m unication when m agic strings (1284.4 synchronous com m ands)
are received.
Refer to the IEEE-1284 Standard for Data Delivery
and Logical Channels for IEEE Std. 1284.4 Interface
(Draft D1.50)
Refer to the IEEE-1284 specification
On
An initial state is IEEE1284.4 com m unication and data that received it
by the tim e it is able to take synchronization by m agic string (1284.4
synchronous com m ands) is discarded.
Signal level
TTL compatible level (IEEE-1284 Level 1 device)
Refer to the IEEE-1284 specification
Data trans. timing
Off
2. Connector pin assignment and signals
Refer to the IEEE-1284 specification
An initial state is com patible interface and never starts IEEE1284.4
com m unication even if m agic strings (1284.4 synchronous
com m ands) are received.
3. Data transm ission timing
Refer to the IEEE-1284 specification
Product Description
Interfaces
21
EPSON Stylus Scan 2500
Revision A
Requests
USB
The scanner must support alm ost all standard device requests. The
scanner does not support vendor specific requests.
Any items not included in this manual and/or the user’s guide shall be in
compliance with the Universal Serial Bus Specification Revision 1.0
Configuration - the scanner supports the following configurations
Table 1-8. Scanner Configuration for USB
Elem ent
Description
Full Speed Mode (12Mbit/s)
Class: Vendor-specific
Subclass: Vendor-specific
Protocol: Vendor-specific
Device
Vendor ID: 0x04B8 (Seiko Epson Corp.)
Product ID: 0x0106
Num ber of possible configurations: 1
Num ber of interfaces supported by this configuration: 1
Characteristics: Self-powered (Rem ote wake-up feature not
supported)
Configuration
Max. power consum ption from VBUS: 2m A (5V)
No alternate setting
Num ber of endpoints used by this interface (excluding
endpoint 0):2
Interface
Class: Vendor specific
Subclass: Vendor specific
Protocol: Vendor specific
Bulk IN transfer
Max. data transfer size: 64 bytes
Endpoint
Bulk OUT transfer
Max. data transfer size: 64 bytes
Language ID: English, US
String Descriptor
1: iManufacturer “EPSON”
2: iProduct “Scanner Stylus Scan 2500”
Product Description
Interfaces
22
EPSON Stylus Scan 2500
Revision A
1.6 Control Panel
Load/
Eject
Printout Size
button
Darker/
Lighter
Quality
button
Copy
button
Stop/ Clear
button
Copies
LCD Panel
Hold for
m enu
Return
Item
Operate
indicator
Error
indicator
Cleaner
Scan
button
Reduce/
Enlarge
B&W/ Color
button
Figure 1-8. Control Panel
S
Table 1-10. Pow er-on functions
1.6.1 Buttons
Button
Function
Table 1-9. Button functions
Prints a status sheet that includes firm ware version, ink
counter, and nozzle check patterns.
Load/Eject
Button
Function
Enters the special-settings m ode (see table below), which
rem ains active for three seconds. If neither the Load/Eject
nor Cleaning button is pushed in that three seconds, norm al
initialization begins.
•
•
Loads or ejects paper
Load/Eject
Load/Eject
(pushed within
two* seconds)
+
If the carriage is at the ink cartridge installation position,
returns the carriage back to the hom e position.
Cleaning
•
Starts the ink cartridge replacem ent sequence (not
available during printing.
Shifts the carriage to the ink cartridge replacem ent
position.
Load/Eject
(pushed for two*
seconds)
Table 1-11. Special settings m ode
Function
Button
•
•
Starts the printhead cleaning cycle.
Load/Eject
Resets the real-tim e counter (power-off tim e) in EEPROM
Cleaning
(pushed for two*
seconds)
If the printer is in the “Ink Low” or “Ink Out” or “No Ink
Cartridge” condition, starts the ink cartridge replacem ent
sequence.
Cleaning
(hold for ten
seconds)
Resets the waste ink overflow counter
•
If the carriage is at the ink cartridge replacem ent position,
returns the carriage from the ink cartridge replacem ent
position to the hom e position.
Cleaning
(pushed within
two* seconds)
* The user’s guide states three seconds.
Product Description
Control Panel
23
EPSON Stylus Scan 2500
Revision A
3. Status
Displays the current Stylus Scan condition.
COPY BUTTON
Before performing a local-copy operation, you should understand how the
LCD and control panel buttons work. The LCD displays:
Exam ple:
Scanner lamp is warming up
Copy status
Warm up
Copy settings
4. Miscellaneous settings
Allows users to print or change the following
Demo pattern
Stylus Scan error messages and m aintenance status
Miscellaneous settings not directly related to copying
1. Copy status
Status sheet
While waiting for a copy job, the current copy settings are displayed.
Example: (default)
Bottom margin
Paper size category (metric or US)
Language code
LCD
100% B&W Norm al
Quality
1
Set factory default
Table 1-12. Copy button functions
Reduce/
Enlarge
Button
Function
Notes
Button
s
•
•
Sets Local Copy Mode as the default; sam e as
printer reset.
B&W/
Color
Operate
Num ber of
copies
Stops the current copy job and ejects the paper
during copying.
Figure 1-9. LCD and Button Relationship
Stop/Clear
•
•
Clears num ber of copies setting (returns to “1”)
Clears settings and returns settings to their default
values.
2. Copy settings
•
•
Starts copying (default = B & W 100% Norm al 1)
Copy
Allows you to m ake the following copy settings.
Selects Color copy or Black & white copy
B&W/Color
Quality
Reduce/Enlarge
Paper size
Brightness
Number of copies
Product Description
Control Panel
24
EPSON Stylus Scan 2500
Revision A
Table 1-12. Copy button functions (cont.)
Table 1-13. Settings Menu
Button
Function
Notes
Button
Function
LCD
Sets copy quality
Hold Quality + B&W buttons
for three seconds
•
B&W
Norm al
Fine
Quality
B&W/
Color
Change m odes
Copy<-> Settings Menu
Menu Mode
After two seconds
•
Color
Norm al
Fine
Quality
Bottom Margin:14/ 3m m
Cycles through the m enus
below:
Photo
Note: When Photo is selected, the LCD displays “Load
Photo Paper”.
Bottom Margin:14/ 3m m
PaperSize: Metric/ US
Copies
+/-
Change m enu in
Settings Menu m ode
•
B&W
Lang: Eng Ger Fr Ital Span
Port
Resets to 1
if Stop/
Clear
button is
pressed.
1-20
Multiple
copies
•
Color
Set Factory Default
Status Sheet Print
1-20
Increm ents by “1”, and increm ent speed increases if
held for m ore than one second.
Lang: Eng Ger Fr Ital Span
Port
•
•
•
•
Selects reduce or enlarge
Default = 100%
Executes m enu or
selects item
Copy
Press copy to change to next
Lang: Eng Ger Fr Ital Span
First press = LED shows current status
Port
Multiple presses (within 5 sec.s) = m oves up one
setting each tim e
Enlarge/
Reduce
Exam ple
First tim e = Enlarge/Reduce LED only (100%) activated
(default)
Second or m ore tim e = cycles through the following.
93% > 80% > 70% > 50%
200% > 141% > 120%
Sets the size of the printed paper during Local Copy
m ode;
A size area = A4/B5/A6
Printout Size
Brightness
Letter size area = Letter/Half Letter/5x8”
Sets the brightness level from -2>0>+2 in increm ents
of “1”.
Product Description
Control Panel
25
EPSON Stylus Scan 2500
Revision A
Table 1-14. LCD display and LED indicators (cont.)
1.6.2 Indicators and LCD Display
Scanner
Printer
Copy
Indicators
Operate Error
Table 1-14. LCD display and LED indicators
Status
Display m essage
Scanner
Printer
Copy
Indicators
Operate Error
Color Ink Low (displays
alternately with regular
m essage)
Status
Display m essage
Color Ink level
low
P
-
-
Scanner fatal
error
S
P
-
-
On
On
Scanner Error
Scanner lam p
warm ing up
S
P
S
Flashing
Flashing
Flashing
-
-
-
Warm Up
Warm Up
Printer fatal
error
Printer Error
Call Service
Ink charging
Scanning
Scanning [xxx]
(xxx=I/F)
Maintenance
request (waste
ink pads full)
P
-
On
On
Printing [xxx]
(xxx=I/F)
Printing
P
Flashing
-
ADF paper jam
S
P
-
-
ADF J am
Following m essages
alternate:
Printer paper
jam
Flashing
Flashing
Flashing
Printer J am
A m essage = (current
copy settings)
ADF cover
open
S
P
-
-
ADF Cover Open
Printer Paper Out
Copying
C
Flashing
-
B m essage = Now
Copying x/y (x=current
docum ent num ber, y =
total num ber of copies)
Printer paper
out
Black Ink end/
No ink
cartridge
Power on (for two
seconds and then
changes to Copy Mode
(default))
P
P
-
-
Flashing
Flashing
Black Ink Out
Color Ink Out
Power on
(all)
P
On
-
-
-
Color Ink end/
No ink
cartridge
Initialize
EEPROM and
reset tim er IC
EEPROM Reset
Ink cartridge
change m ode
P
S
Flashing
Flashing
-
-
Replace Cartridge
Maint. Cover Open
This order of item s in this table is from high to low priority.
“-” = no change/does not m atter
Maintenance
cover open
Black Ink Low (displays
alternately with regular
m essage)
Black ink level
low
P
-
-
Product Description
Control Panel
26
EPSON Stylus Scan 2500
Revision A
1.6.3 Initialization
Table 1-15. Initialization
Operat Stand
Controller
process
Scanner
process
Printer
process
Operation
Restart
PRINTER INITIALIZATION
ing
by
H/W
H/W
There are three initialization methods.
1. Power-on (hardware) initialization
Power on
Valid Valid
Valid Valid
-
-
initialization initialization
Panel
Reset
Set the local
Controller Panel
copy setting to initialization initialization
default
The printer initializes when turned on or when it recognizes the cold-reset
command (rem ote RS command).
When the printer initializes, the following actions are perform ed.
Initialize
by
com m and
S/W
S/W
Valid Valid
-
initialization initialization
Initialize printer mechanism
Clear input data buffer
Clear print buffer
•
•
Stop
copying
Copy
button
STOP
Valid
-
Cancel
Eject paper
Setting
rem ains as
is
Set default values
2. Operator initialization
•
•
Setting
m ode:
default
The printer initializes when turned on within ten seconds of being turned
off, or when the printer recognizes the -INIT signal (negative pulse) from
the parallel interface.
CLEAR
-
Valid
Copy m ode:
Multi-copies
volum e 1
When the printer initializes, the following actions are perform ed.
Cap the printhead
Eject paper
Clear input data buffer
Clear print buffer
Set default values
3. Software initialization
The ESC@ comm and also initializes the printer.
When the printer initializes, the following actions are perform ed.
Clear print buffer
Set default values
Product Description
Control Panel
27
EPSON Stylus Scan 2500
Revision A
1.7 Settings Menu
SCANNER INITIALIZATION
There are three initialization methods.
1. Hardware initialization
Enter the settings menu m ode by holding down the Quality and B&W/Color
buttons. Settings are saved when the power is turned off.
Table 1-16. Settings Menu
The scanner initializes when turned on.
When the scanner initializes, the following actions are perform ed.
Button
Function
LCD
Initialize scanner mechanism
Clear input/output data buffer
Set default values
Hold Quality + B&W buttons for three
seconds
Quality
B&W/
Color
Change m odes
Copy<-> Settings Menu
Menu Mode
After two seconds
Bottom Margin:14/ 3m m
2. Operator initialization
Cycles through the m enus below:
Bottom Margin:14/ 3m m
PaperSize:Metric/ US
The scanner initializes when it recognizes the -INIT signal (negative pulse)
from the parallel interface.
When the scanner initializes, the following actions are perform ed.
Copies
+/-
Change m enu in
Settings Menu m ode
Lang:Eng Ger Fr Ital Span Port
Set Factory Default
Clear input/output data buffer
Set default values
Status Sheet Print
3. Software initialization
Lang: Eng Ger Fr Ital Span Port
Press copy to change to next
Executes m enu or
selects item
Copy
The ESC@ comm and also initializes the scanner.
When the scanner initializes, the following actions are perform ed.
Lang: Ger Fr Ital Span Port Eng
Clear input/output data buffer
Set default values
Product Description
Settings Menu
28
EPSON Stylus Scan 2500
Revision A
1.8 Stylus Scan Errors
MENUS
1. Bottom Margin
PRINTER-SPECIFIC ERRORS
Determines the default bottom m argin of 14m m or 3m m .
Table 1-17. Printer-SPECIFIC errors
Cause Solution
2. Paper Size category
Determines which paper size category is enabled; m etric or US
Metric = A4/B5/A6
Error
When one or m ore ink cartridges are
alm ost em pty, the printer enters the
low-ink state and continues printing.
When the cartridge is com pletely em pty, cartridge.
the printer indicates an ink-out error and
stops printing.
US = Letter/Half Letter/5x8”
3. Language
Install a new ink
Ink out
Determines which language is used to display LCD m essages;
English/Germ an/French/Italian/Spanish/Portuguese
4. Set Factory Default
If the printer fails to properly load paper, Load paper and press
Determines parameters for factory default settings.
Factory default settings:
Copy m ode = Refer to “ Buttons” on pag e24
Settings Menu m ode = 14mm bottom margin
The Paper Size and Language param eters are saved as defaults when
power is turned off.
Paper out
Paper jam
it indicates a paper-out error.
the Load/Eject button.
Press the Load/Eject
If the printer fails to properly eject paper, button. If this does not
it indicates a paper jam .
clear the error, rem ove
the paper by hand.
5. Status sheet
Prints the following settings:
Bottom m argin
If the printer detects that one of the ink
cartridges is not installed, it indicates a
no-ink-cartridge error.
No ink
cartridge
Install a new ink
cartridge.
Paper size category
Language
Replace the waste ink
pads and reset the
waste ink counter with
the adjustm ent
program . See Chapter
5 for details.
When the total am ount of waste ink
reaches the lim it, the printer indicates a
m aintenance request and stops printing.
Call Service
Fatal error
Turn off the Stylus
Scan and turn it back
on. If the error does not
clear, service.
A carriage control or CG access error
has occurred.
NOTE: Do not re-install used ink cartridges. Doing so confuses the
ink-level detection function and m ay cause a serious problem
in the printhead.
Product Description
Stylus Scan Errors
29
EPSON Stylus Scan 2500
Revision A
1.9 Options
SCANNER-SPECIFIC ERRORS
Table 1-18. Scanner-SPECIFIC errors
The optional Auto Document Feeder and optional Transparency Unit
designed for use with the GT-7000 scanner m ay also be used with the EPSON
Stylus Scan 2500 under the following restrictions.
Error
Cause
Solution
•
•
The lam p is broken.
Turn off the Stylus Scan and
turn it back on. If the error does
not clear, service.
Stylus Scan turned on before
the transportation screw was
rem oved.
1.9.1 Local Copy
Fatal error
(Disposition)
•
System breakdown.
Turn off the lam p and stop
operation. Set bit 7 of the
status byte.
ADF
If a document is loaded in the ADF tray, the Stylus Scan loads and scans that
document.
If a document remains on the document glass, a copy is not produced
normally.
Even if multiple copies are selected, the Stylus Scan ignores this setting and
produces only one copy per docum ent sheet.
After rem oving the docum ent,
turn the Stylus Scan off and
back on, or send the ESC @
com m and.
ADF paper
jam
Parallel I/F init: active pulse
ADF fails to eject the docum ent.
Unidentified com m and detected.
(Disposition)
Turn off the lam p and stop
operation. Set bit 7 of the
status byte.
TPU
The TPU cannot be used in Local Copy mode. The Stylus Scan ignores the
TPU in this mode.
(Disposition)
The scanner sent a NACK signal
and is waiting for the next
com m and. If an incorrect
com m and or param eter is
received, it is disregarded and the
previous value is m aintained.
1.9.2 Scanning
Com m and
error
Send a correct com m and to
clear the error.
ADF
Same as the GT-7000.
ADF cover
open
ADF cover open
Close the cover.
Close the cover.
TPU
Maintenance
cover open
Maintenance cover open
If the Stylus Scan receives transparency scanning com mands, it will turn on
the TPU lam p and scan the transparency after the warm -up period. The Stylus
Scan ignores the ADF in this mode. After scanning, the TPU lam p remains on
until the TPU is turned off or until the Stylus Scan receives reflective
document scanning com mands.
If the Stylus Scan receives reflective document scanning comm ands, it will
scan the document normally.
Product Description
Options
30
EPSON Stylus Scan 2500
Revision A
Product Description
Physical Characteristics
32
EPSON Stylus Scan 2500
Revision A
2.1 General
2.2 Printer Mechanism Operation
Like previous EPSON Ink J et printers such as the Stylus Color 740, the
printer m echanism of the EPSON Stylus Scan 2500 does not have an
exclusive m echanism to switch from paper feeding to pum ping and back.
Instead, this control is done by the rotational direction of the paper feed/
pum p m otor and also depends on the position of the carriage.
The main com ponents of the EPSON Stylus Scan 2500 are the printer
mechanism, scanner m echanism, and the following circuit boards
Main:
B102 Main Board
B102 PSB/PSE Board
B102 PNL Board
Power Supply:
Panel:
The printhead com bines the black and CMY heads in one unit. The
following indicate the nozzle configurations of these 3 m odels.
Black Nozzles:
CMY Nozzles:
144 nozzles (120 dpi x 3 rows in staggered)
48 nozzles/colors (120 dpi x 1 row)
Motor Types and Corresponding Functions
For details
see
Motor
Type
Function
CR Motor Stepping Used to drive the carriage.
page 38
•
•
•
•
Drives the ASF to feed paper into
paper path
Drives paper feed rollers at variable
speeds
PF Motor Stepping
page 40
Drives the CR Lock lever (as
described on page 44)
Drives pum p unit to absorb ink
Figure 2-1 in the in the right colum n shows the outline of the printer
m echanism .
Operating Principles
General
34
EPSON Stylus Scan 2500
Revision A
2.2.1 Printing Mechanism
Disengage
flag
PF m otor
pinion
73.6 Gear/Precision Gear
The basic principles of the printhead are the sam e as previous m odels; Drop-
On-Demand type MACH head m ethod.
ASF
sensor
Intermittent
You need to m anually input the drive-voltage code (printed on top of the
printhead) for the multi-layer piezo electric element. Input this value every
tim e you replace the printhead, MAIN board, or printer m echanism .
gear
PF Motor
Detector
w heel
Flushing section
Loading
shaft
The main parts of the printhead and carriage are described below.
Star w heel
Disengage flag
Black I/ C sensor
PZT
PZT is an abbreviation of Piezo Electric Elem ent. The print signal is
sent from the MAIN board to the PZT via the driver circuit on the
printhead unit. Then, the appropriate PZT squeezes the cavity, forcing
the ink stored in the cavity out through the nozzle. This process is
described in m ore detail on the next page.
Loading
rollers
CMY I/C sensor
Carriage unit
Ink cavity
Printhead
(one unit)
Ink flows from the ink cartridge, through the filter, and to the ink
cavity where it is stored until one of the PZT units forces it out through
the nozzles.
Timing belt
Cap unit
PE sensor
Nozzle Plate
Carriage HP
sensor flag
The bottom surface of the printhead which contains nozzle holes to
direct ejected ink toward the paper below. See the next page.
Carriage HP
sensor
Filter
Pump unit
When the ink cartridge is installed, if any dirt or dust around the
cartridge needles is absorbed into the inside of the printhead, there is
a large possibility that the nozzles will clog. Clogged nozzles can be
detected by alignm ent failure and dot-m issing problem s. To prevent
these kinds of problem s, a filter is set below the cartridge needle and
ink flows through the filter on its way to the ink cavity.
CR guide shaft
CR Motor
PF roller
PG lever
Figure 2-1. Printer Mechanism Block Diagram
Operating Principles
Printer Mechanism Operation
35
EPSON Stylus Scan 2500
Revision A
Nozzle selector
Board
Ink Out
sensor
actuators
Needle
Ink cartridge
PZT
(Piezo)
unit
Filter
Nozzle
plate
Ink cavity
Figure 2-2. Printhead Sectional Draw ing
Ink Out sensor actuators (x2)
The Ink Out sensors (x2) detects whether or not an ink cartridge is
installed according to the position of the Ink Out sensor actuator.
When a cartridge is installed, the actuator is pushed down, which
turns the shaft that is connected to the actuator. The flag at the other
end of the shaft activates the Ink Out sensor when the cartridge is fully
in place.
See the next page for more details on the nozzle selector board and the ink
ejecting process.
Operating Principles
Printer Mechanism Operation
36
EPSON Stylus Scan 2500
Revision A
2. Ejecting State:
2.2.2 Printing Process
When a print signal is sent from the MAIN board, the IC (Nozzle Selector)
located on the printhead unit receives the data in 1-byte units. The Nozzle
Selector then sends the voltage signal on to the appropriate PZT. Due to
the physical properties of the PZT, electrical signals cause the PZT to
change shape. When the PZT changes shape, it squeezes the ink cavity,
ejecting ink out through the nozzles.
The following figures show sectional drawings of the printhead in the norm al
and ejecting states.
1. Normal State:
When no print signal is output, the PZT is in the norm al, standby, state.
Piezo unit
Cavity
Ink course
Nozzle plate
surface
Nozzles
Figure 2-4. Printhead Ejecting State
Figure 2-3. Printhead Norm al State
Operating Principles
Printer Mechanism Operation
37
EPSON Stylus Scan 2500
Revision A
2.2.3 Carriage Mechanism and Motor
CR Motor Control for Each Mode
The carriage m echanism m oves the carriage back and forth according to
the drive from the carriage m otor. See Figure 2-6 on the next page.
Drive Speed
[CPS]
Drive frequency
[PPS]
Printing m ode
Drive m ethod
Double1-2, 2-2,1-2
phase drive*
The carriage m otor is a 4-phase, 200-pole, stepping m otor and is driven
by 2-2 phase, 1-2 phase, Double 1-2 phase, 2-Double 1-2 phase, and 4-
Double 1-2 phase drives. This stepping m otor allows the carriage to m ove
freely to fixed positions where necessary operations such as ink
absorption can be perform ed. The following tables show carriage the
m otor specifications and m otor controls.
High Speed Skip
Norm al Printing
Capping
340
200
80
4080
2400
960
480
240
60
Double 1-2, 2-2 phase
drive
2-Double 1-2, 2-2 phase
drive
2-Double 1-2, 2-2 phase
drive
Wiping
40
Carriage Motor Specifications
Cap (Valve
Release)
4-Double 1-2, 2-2 phase
drive
20
Item s
Description
4-Double 1-2, 2-2 phase
drive
Motor type
4-Phase/200-pole Stepping m otor
Withdrawal of cap
5
Drive voltage Range
42VDC ± 5%
7.8 Ohm s ± 10%(per phase in 25 °C
environm ent)
Internal coil resistance
A
1
Control m ethod
Phase drive
Bi-Polar Drive
2-2, 1-2, 2-Double 1-2, and 4-Double 1-2
/A
2
Phase drive
Rotor
Phase Drive
2-2
inch/ pulse
m m / pulse
0.212
3
1/120
B
1-2
1/240
0.106
4
/ B
Double 1-2
2-Double 1-2
4-Double 1-2
1/480
0.053
1/960
0.026
1/1920
0.013
Figure 2-5. CR Motor Internal Circuit Diagram
Operating Principles
Printer Mechanism Operation
38
EPSON Stylus Scan 2500
Revision A
PLATEN GAP LEVER
Hom e position
sensor
Carriage
motor
Tim ing
belt
Paper feed
roller
Carriage
unit
Rear (thick
paper) position
Forw ard
(normal)
position
Paper eject
rollers
Paper guide
(front)
Platen Gap
lever
Parallelism
adjust
lever
Figure 2-6. Carriage Mechanism w ith platen gap lever (Top view )
As shown in Figure 2-6, the Platen Gap lever can be m oved forward or
back to adjust for the thickness of the paper. The PG lever is connected to
the carriage guide shaft, which raises or lowers the carriage depending on
the PG lever position. The nozzle surface rem ains parallel to the paper in
either position thanks to a tilt adjustm ent m echanism . Also, the two
parallelism -adjustm ent levers, one m ounted on each side of the carriage
guide shaft, adjust the parallelism between the platen and shaft when the
shaft is installed in the factory. This precise adjustm ent is necessary to
m ake sure the gap between the platen surface and the printhead surface
is 1.04 m m in the norm al position or 1.74 m m in the thick-paper position.
Operating Principles
Printer Mechanism Operation
39
EPSON Stylus Scan 2500
Revision A
2.2.4 Paper Feeding Mechanism
A
The paper feeding process begins at the ASF, continues through the PF
roller, and ends at the paper eject roller (and star-wheel gear).
1
2
/A
The ASF unit, which is com m on with the Stylus COLOR 740 printers, is
driven by the PF m otor (stepping m otor). Torque sent from this m otor
switches between the ASF unit and pum p/PF roller depending on the
position of the disengage lever (described later).
Rotor
3
B
In the EPSON Stylus Scan 2500, a four-phase hybrid type pulse m otor is
used in the PF m otor as a m otive power of the paper m echanism . The
torque is sent at 2-Double 1-2, Double 1-2, 1-2, and 2-2 phase drives. This
m otor drives the paper-feeding m echanism as well as the pum p
m echanism which is necessary for printhead cleaning. By using this pulse
m otor, it becom es possible to use variable drive levels for m any
purposes, such as paper feed, slight paper feed, and high or low speed
absorption of pum p operations. The following table shows PF m otor
specifications.
4
/ B
Figure 2-7. PF Motor Internal Circuit Diagram
Motor Control for Each Mode
Drive Speed
[CPS]
Drive frequency
[PPS]
Printing m ode
Drive m ethod
PF Motor Specifications
Item
Description
Double 1-2, 2-2,1-2
phase drive*
High Speed Skip
Norm al Printing
Capping
340
200
80
4080
2400
960
480
240
60
Motor type
4-phase/200-pole Stepping m otor
Double 1-2, 2-2 phase
drive
Drive voltage
42VDC ± 5%
7.8 Ohm s ± 10%(per 1 phase under 25°C
Coil Resistance
2-Double 1-2, 2-2 phase
drive
environm ent)
Control m ethod
Phase drive
Bi-Polar Drive
2-Double1-2, 2-2 phase
drive
Wiping
40
1-2, 2-2, Double 1-2, 2-Double 1-2
Cap (Valve
Release)
4-Double1-2, 2-2 phase
drive
20
Phase drive
4-Double 1-2, 2-2 phase
drive
Phase Drive
Inch/ pulse
m m / pulse
0.035
Withdrawal of cap
5
2-2
1-2
1/720
Drive from the PF m otor is sent to the PF rollers and paper eject rollers as
described below.
1/1440
1/2880
1/5760
0.018
Double 1-2
2-Double 1-2
0.0088
0.0044
To the PF rollers:
PF m otor pinion gear (CCW rotation)→ Gear 73.6 → PF rollers
Operating Principles
Printer Mechanism Operation
40
EPSON Stylus Scan 2500
Revision A
To the eject rollers:
PF m otor pinion gear (CCW rotation)→ Gear 73.6 → Com bination gear
(13.5, 308) → Spur gear (28) → Paper eject rollers
NOTE: Above CCW rotation is m entioned viewing from the PF m otor pinion
gear side.
Figure 2-8 shows a paper feeding m echanism block diagram , which
includes the parts along the PF m otor drive-transm ission paths.
Gear
73.6
PF Roller
Paper Eject Roller
Star Wheel Assy.
PF m otor
Com bination
Gear13.5,30.8
Gear 28
Figure 2-8. Paper Feeding Mechanism (Top View )
The printer feeds paper from the ASF (when the PE sensor located near
the carriage m otor detects paper is loaded) through the paper path and
stops feeding when the paper’s leading edge reaches the halfway point of
the front paper guide. To correct for any m isfeeding, the paper is fed back
toward the ASF a predeterm ined num ber of steps and then it is fed
forward again until it reaches the top-of-form position.
Once the printer starts printing, it advances paper using the PF rollers and
subrollers until it reaches the last 14m m of the paper, when it advances
the paper using the star wheel gear and paper eject rollers.
m echanism is used for the following operation.
Operating Principles
Printer Mechanism Operation
41
EPSON Stylus Scan 2500
Revision A
3. Due to the design of the ASF, the LD roller loses friction on the paper and
stops at the point where the paper is fed by the PF roller. (See “PF Roller
Paper Feed State” in Figure 2-9.)
MULTI-FEED PREVENTION MECHANISM
Like the Stylus COLOR 740 ASF, the ASF built in the Stylus Scan has the
multiple-paper-feeding-prevention mechanism to provide accurate and
consistent paper feeding. This m echanism prevents a sheet of paper from
falling from the paper set position into the paper path. A paper return
the hopper. After this m otion is com pleted, the LD roller starts loading
paper. The multiple-paper-feeding-prevention operation is described in
the following steps.
4. When the next print signal is sent or the Load/Eject button is again
pressed, the PF motor rotates clockwise a specified num ber of steps to set
the LD roller and the paper return lever in place. (See “Standby State” in
Figure 2-9.)
NOTE: If no print signal is sent for a predeterm ined num ber of seconds in step 4,
the LD roller and the paper return lever autom atically return to the
standby state.
1. When the printer power is turned on, the ASF/Pum p m otor rotates
counterclockwise to detect ASF hom e position. Then the m otor rotates
clockwise specified steps to set the LD roller and paper return lever to
their proper positions. (See “Standby State” in Figure 2-9.)
2. When the paper loading signal is sent from the PC or the Load/Eject
button is pressed, the PF motor turns counterclockwise to let the LD roller
load paper. (See “Paper Pick Up State” in Figure 2-9.)
Figure 2-9. Multiple Paper Loading Prevention Mechanism (right side view )
Operating Principles
Printer Mechanism Operation
42
EPSON Stylus Scan 2500
Revision A
SMALLER TRAILING-EDGE MARGIN
Like the Stylus COLOR 740, this model uses a new design to allow printing up
to the last 3m m by changing the design and position of the star-wheel gear.
The star-wheel gear assembly has been shifted 5 degrees from directly on top
of the eject rollers towards the front paper guide. This change suppresses the
tailing edge of the paper so that the old m inim um m argin of 14m m has been
reduced to only 3m m .
Printhead
Support roller
Old Feeding
Method
Star w heel
Assem bly
Paper
PF roller
Eject rollers
Platen
3m m bottom m argin
m ay contact printhead
New Feeding
Method (from
COLOR 740)
Moved to a 5
degree angle
This area rem ains
stable
Figure 2-10. 3m m im proved m argin (view ed from right side)
Operating Principles
Printer Mechanism Operation
43
EPSON Stylus Scan 2500
Revision A
The PF motor drive is sent to the CR Lock lever via the Paper Eject roller.
CARRIAGE LOCK MECHANISM
PF Motor pinion gear (CW rotation) → Gear 73.6 → Com bination gear →
Gear 28 → Paper Eject Roller → CR Lock Lever
The carriage lock m echanism prevents the carriage from being left at an
uncapped position for a long tim e which can occur due to user m istakes,
physical shock, vibration during transport, and so on. The CR lock m echanism
is driven by the stepping PF m otor. See Table, “ PF Motor Specifications,” on
page 40 for motor specifications.
If the carriage is left uncapped for a long tim e, ink on the printhead surface
gradually thickens and m ay clog the nozzles. In som e cases, the nozzles m ay
be so thoroughly clogged that they cannot be cleared even after perform ing
m ultiple cleaning operations.
The PF m otor controls the CR lock mechanism as well as the PF mechanism
depending on the direction of the PF m otor rotation. The CR lock m echanism
is located at the right end of the paper eject roller.
To prevent clogged nozzles, the printer caps and locks the carriage in the
following conditions.
Pow er off sequence:
When power is turned off, even during printing, the printer caps and
locks the carriage at the end of the power-off sequence.
Pow er on sequence:
When power is turned on, the printer autom atically perform s an
autom atic (power-on) cleaning cycle and then caps and locks the
carriage.
NOTE: The power-on cleaning cycle is an autom atic head cleaning
sequence that is perform ed every tim e the power is turned on.
The tim er IC, which is powered by the lithium battery,
m easures the length of tim e the printer has been off. The
printer selects and perform s the appropriate cleaning
operation according to the length of tim e it has been off.
Top view
Bushing 6
Right-side view
Carriage
Pump Planetary
Lever
CR Lock
Lever
Paper eject sequence:
Paper Eject
roller
Pump
Planetary
Lever Guide
When the Load/Eject button is pressed, the printer ejects any paper in
the paper path. If no print data is received at this tim e, the printer caps
and locks the carriage and then enters the standby m ode.
However, if no paper is in the paper path when the Load/Eject is
pressed, the printer loads a sheet and does not lock the carriage.
Middle fram e
Figure 2-11. CR Lock Mechanism
While the PF motor drive is used for paper feeding (PF motor rotation = CCW),
the CR Lock Lever is set under the Paper Eject Frame. But the CR Lock lever
rises up and locks the carriage when the PF m otor rotates CW.
PF m otor torque is always transmitted to the CR lock lever side, but the
operation of the CR lock m echanism varies depending on the rotation
direction of the m otor.
Clockwise = sets the carriage lock lever
Counterclockwise= releases the carriage lock lever
Operating Principles
Printer Mechanism Operation
44
EPSON Stylus Scan 2500
Revision A
PAPER PICK-UP OPERATION
When the Load/Eject switch is pressed or printing order is input, the carriage
unit m oves until the left edge and collides with paper pick up trigger lever.
When the carriage collides with this trigger level, a planetary gear located on
the sam e axis is also pushed at the sam e tim e and conveys the m otive power
on the platen to the adjoining gear line side for ASF drive.
Combination
gear 16,40.8
Gear 34/
ASF roller
drive gear
Paper pickup
trigger lever
Gear 36/
Eject roller
drive gear
Com bination
G 12.4,28/
Eject roller
transm ission
gear
PF motor
pinion gear
Spur 23.2/ ASF
roller
transm ission
gear
Com bination G
16,21.6/Platen roller
transmission gear
Gear 73.6
Figure 2-12. Paper Pickup Mechanism
Operating Principles
Printer Mechanism Operation
45
EPSON Stylus Scan 2500
Revision A
2.2.5 Ink System
Printable Area
Ink system m echanism consists of 1) cap m echanism , 2) pum p m echanism , 3)
carriage lock mechanism , 4) waste ink absorber and 5) ink sequence. Out of
these mechanisms, 1) to 4) are physical m echanism and parts which are
mounted on the printer m echanism and 5) the ink sequence is perform ed
autom atically by the firm ware. The EPSON Stylus Scan 2500 has no engage/
when the PF m otor operates. The figures below show printhead positions
when the ink system and various ink-pum ping sequences are perform ed.
2976 dots (360-dpi)
A
C
B
D
E
F
A. ASF Pick-up position
B. Flushing position
C. Wiping/ rubbing position
D. Flushing position
E. Ink Discharge position
F. Cap cleaning position
PF roller drive
Eject roller
drive gear
gear
Figure 2-14. Major Ink Sequence Positions on Carriage
Carriage lock
lever
2.2.6 Pum p, Carriage Lock, Head Cleaner
Mechanism
Cleaner blade
In the EPSON Stylus Scan 2500, there is no switch or m echanism to switch
between the ink pum p and paper feed operations. Therefore, whenever the
paper feed/pump m otor rotates, the pum p-drive roller inside the pum p unit
rotates. However, the rotational direction of the rollers determ ines whether or
not the pum p sucks ink. Also, even if the pum p rotates in the ink-absorption
direction, ink is not absorbed if the carriage is in the false-absorption position.
Figure 2-13 shows process of conveying m otive power to the pum p drive
roller.
Eject roller
PF (pum p)
transmission
m otor pinion
gear
gear
Pum p roller
Cap unit
The process of conveying the motive power to the paper eject roller is shown
in Figure 2-15. This m otive power is conveyed to Gear C through Gear B. The
lever that drives Gear C, the carriage lock, and the head-cleaner m echanism is
shown separately but it is constructed as one unit. Since the engagem ent of
these parts depends on the tension of the com pression spring, if the lever is
burdened, only Gear C and the pum p roller rotate and no m ore m otive power
is conveyed to the lever part.
Figure 2-13. Ink System Mechanism
Operating Principles
Printer Mechanism Operation
46
EPSON Stylus Scan 2500
Revision A
The table below shows PF/Pum p motor rotational direction and pum p system
operation.
Axis of
Paper
eject
Gear A
Pum p Motor Rotation and Function
roller
PF m otor pinion gear rotation
Pum p unit operation
(looking at gear surface)
Gear B
1) Release the tubes
Clockwise (CW)
2) Disengage Head Cleaner
forward rotation
3) Disengage carriage lock
Com pression
spring
1) Squeeze tubes to pum p ink
2) Engage Head cleaner
3) Engage carriage lock
Counterclockwise (CCW)
backward rotation
Gear C
Refer to Figure 2-16 in the right colum n which shows the pum p operations at
clockwise and counterclockwise rotation.
During ink-absorptive operations such as cleaning and flushing (but not
during normal printing), ink drains from the ink cartridge to the waste-ink
pads through the cap. During printing and flushing, ink is fired out of the
nozzles by the PZT. But during absorption operations the head is capped and
ink is sucked off the nozzle plate by the force of the vacuum created by the
pump drive and the PZT does not m ove.
Pum p drive
roller
Figure 2-15. Pum p Mechanism Pow er Transm ission Process
Operating Principles
Printer Mechanism Operation
47
EPSON Stylus Scan 2500
Revision A
Counter-Clockw ise
Revolution
Clockw ise
Revolution
Tube squeezed
Tube released
Figure 2-16. Pum p Roller Rotation and it’s Operation
Pum ping m odes
Pum p Mode
Low speed
Revolutions
Absorption
0.38rev/second
0.06m l/second
Regular absorp-
tion
1.3 rev/second
2.6rev/second
0.2m l/second
High speed
0.4m l/second
0.54m l/second
Super high speed 3.38rev/second
Operating Principles
Printer Mechanism Operation
48
EPSON Stylus Scan 2500
Revision A
2.2.7 Cap Mechanism
Position A
Positions B and C
Carriage flag
The cap m echanism prevents ink from thickening and sticking on the head
surface when the printer is not in operation and it also plays a part in cleaning
the printhead. During the power-off sequence, the printhead m oves to the
right where the head surface and cap com e into contact, and the head surface
contacts the rubber frame of the cap surface until the power is turned back
on.
An absorber pad is spread in the cap and can hold a certain amount of ink
which is absorbed from the head without draining it to the waste ink pad.
Also, below the absorber pad, there are two valves that control the adhesion
pressure between the head and cap surface. There is also one exit and tube to
drain ink to the waste ink pads.
Ink Eject Valve
Negative Pressure
Valve
Position A
When the carriage is out of the HP (for example in the printable area or paper
feed position), the valves on the cap m echanism stay in Position A (closed) as
shown to the right.
Position B
Open-valve
state
When the carriage returns to the right, it catches the carriage flag on the cap
mechanism. This raises the cap to m eet the head surface. This position is
used for head cleaning because the valves are still closed but the rubber
around the cap traps air, so when the pump sucks air away from the cap, a
vacuum is created and ink is sucked away from the head surface. Ink
absorption and slight ink absorption are performed in Position B.
Closed-
valve state
Frame
flag
Position C
By moving the carriage a little further to the right, the fram e flag on the cap
mechanism contacts the frame and the air valve opens. When the carriage is
in this position and the pump sucks air, no ink is absorbed from the head
surface but ink left in the absorber pad in the cap is drained.
Figure 2-17. Cap m echanism and valve operation
Operating Principles
Printer Mechanism Operation
49
EPSON Stylus Scan 2500
Revision A
Inverter Board:
Lam p:
This board provides voltage to drive the lam p.
2.3 Scanner Principles
A white cold fluorescent lam p is used as the light
source.
This section explains the operating principles of the scanner m echanism . The
scanner mechanism can be divided into the Carriage Unit and Carriage
Operation.
Mirror and Lens:
The light emitted to the docum ent reaches the CCD
sensor after being reflected on some mirrors one after
another. Instead of changing the light source to
create R/G/B light component as many previous
models did, the color CCD itself creates each R/G/B
light com ponent.
2.3.1 Carriage Unit
The Carriage Unit is m ainly composed of the CCD sensor board, inverter
board, lam p (light source), m irror, and lens. (See Figure 2-18 and Figure 2-19.)
Figure 2-19. Mirror, Lens Mechanism
Figure 2-18. Carriage Unit Com ponent
CCD Sensor Board:
This board controls the Color CCD line sensor
(independent R,G,B) and drive circuit.When power
is turned on and the LCD display shows "Warm up",
the CCD sensor board is actually performing a
standard white test.
Operating Principles
Scanner Principles
50
EPSON Stylus Scan 2500
Revision A
2.3.2 Carriage Operation
Scanning is perform ed in the main scan direction (=1 line) by the CCD sensor
and in the sub-scan direction (=several lines) by the carriage movem ent. (See
Figure 2-20.)
The line-type, color CCD sensor can scan 1 line in main scan direction
(parallel) to the carriage unit) by one tim e. When scanning next lines after the
second line in sub-scan direction, CR driving m oves the carriage unit, which
has CCD sensor inside, and scan the other lines. The scanned data is sent to
the control board. The scanned data for “n” lines and “n-1” line are
processed consecutively.
Figure 2-20. Carriage Movem ent
The Carriage Unit slides in the sub-scan direction along the guide rail. For this
sliding operation, the carriage m otor drives the tim ing belt attached to the
carriage unit by conveying the driving force through the driven pulley and
reduction gear. Scanning start position is determ ined by CR HP sensor, which
is located on the control board. Since the stepping m otor is used for CR
motor, carriage head position is controlled under the open loop system .
Operating Principles
Scanner Principles
51
EPSON Stylus Scan 2500
Revision A
2.4.1 Local copy process
2.4 Local and PC Copy Principles
Scan > gamm a curve > color m atching table > print
This section covers the m ain differences between Local Copy and PC Copy
operations.
1. The scanner scans at 300 or 600 dpi.
Local Copy = Scan and print the scanned docum ent using only the
Stylus Scan processing power. Can be connected or not connected to
a com puter.
2. The image data is processed through the gamm a curve to remove the
background color of plain paper or photo paper. Unlike the Stylus Scan
2000, this im age processing includes MicroWeave, halftones, and so on.
PC Copy = Scan, process the scanned docum ent in the open
application, and print from the application.
3. The color matching table is consulted to convert RGB to CMYK.
4. The printer prints at 360 x 360 or 720 x 720 dpi, and color is full color.
Stylus Scan 2500 Local Copy
Scan Res.
dpi
Print Res.
dpi
Original Doc.
Type
Background Color
Rem oval
Mode
Setting
Dot Size
Media
Text - Busi-
ness doc.
B/W
B/W
Norm al
300
360x360
Norm al
Plain Paper
Plain Paper
Plain Paper
Newspaper color
Photo - Text & EPSON Photo Quality
Photo
Fine
600
300
720x720
360x360
Variable
Norm al
Inkjet paper color
Text - Busi-
ness doc.
Color
Norm al
Plain paper color
Photo - Text & EPSON Photo Quality
Color
Color
Fine
600
600
720x720
720x720
Variable
Variable
Plain Paper
Photo Paper
Photo
Inkjet paper color
Photo
Photo only
No color rem oval
Operating Principles
Local and PC Copy Principles
52
EPSON Stylus Scan 2500
Revision A
AutoPhotoFine (sim ilar to PhotoEnhance in the driver) is used to
im prove quality.
2.4.2 PC copy process
4. The color matching table is consulted to convert RGB to CMYK.
PC Copy Settings
5. The print resolution varies according to m edia type; same as Speed vs
Quality slide bar in the printer driver.
Mode
Setting
Norm al
Fine
Scan Res. dpi
Print Res. dpi
Speed
Media
All
240
360
240
360
240
360
240
360
2.4.2.2 Original color copy
Text
Quality
Speed
All
Original color copy does not process or enhance the scanned data. This is
useful in two cases
Norm al
Fine
All
Text & Im age
Photo
Scan > OriginalColorCopy > color m atching table > print
Quality
Speed
All
1. The scanner scans at 300 or 600 dp, but EPSON TWAIN calls for 240 or
360 dpi image data (to m atch printer resolution).
Norm al
Fine
All
2. The image data is not analyzed or modified.
Quality
Speed
All
3. The color matching table is consulted to convert RGB to CMYK.
Norm al
Fine
All
OriginalColor-
Copy
4. The print resolution varies according to m edia type; similar to the Speed
vs Quality slide bar in the printer driver.
Quality
All
2.4.2.1 Norm al PC copy
Scan > gam ma curve > im age processing > color matching table > print
1. The scanner scans at 300 or 600 dp, but EPSON TWAIN calls for 240 or
360 dpi image data (to m atch printer resolution).
2. The image data is analyzed to remove the background color of paper and
to rem ove any im age from the reverse side of the paper.
3. The image is im proved with the Auto Document Enhancement feature
which:
Sharpens edges
Smoothens characters
Removes m oire (usually - see original color copy below) from
documents that were printed from ink jet printers - this prevents
CMYK color meshes from doubling when the im age is printed again
from an ink jet printer
Operating Principles
Local and PC Copy Principles
53
EPSON Stylus Scan 2500
Revision A
2.5 Electrical Circuit Operating Principles
B102 PSB/
PSE Board
B102 MAIN Board
+5V/
3.3V
DC
EPSON Stylus Scan 2500 contains the following three electric circuit boards.
C
D
C
V
Electronic Boards for Stylus Color 2500 are;
+42V/
24VDC
D
C
+
4
V
2
D
AC Input
/
3
V
.
2
5
3
Main:
Power Supply:
Panel:
B102 Main Board
B102 PSB/PSE Board
B102 PNL Board
4
+
Ink End
and P-off
time
+
+12VDC
Refer to Figure 2-21 for the m ajor connection of the 3 boards and their roles.
CR HP
Sensor
+5VDC
CR Motor
LED &
LCD
B102
PNL
PE
Sensor
PF Motor
(Pump Motor)
Scanner HP
Sensor
B/ CMY Ink
Out Sensor
Therm isto
Printhead
Maintenance
Cover Sensor
Nozzle selector
Board
Scanner Motor
CCD Sensor
+12VDC
Option
+24VDC
Scanner
Figure 2-21. Electric Circuit of Stylus Color 2500
Operating Principles
Electrical Circuit Operating Principles
54
EPSON Stylus Scan 2500
Revision A
Figure 2-22 shows a block diagram of power supply board. The process from
the input of AC voltage to the output of DC voltage is explained in the
following pages.
2.5.1 B102 PSB/ PSE Board
The power supply board for the EPSON Stylus Scan 2500 generates +42VDC
to drive the m otors, +24VDC to drive the scanner and option, +12VDC to
power the lamp, and +5VDC/+3.3VDC to power the printer logic. The table
below shows application of voltages generated by PSB/PSE board.
driving power is turned off after the carriage goes back to the carriage
lock position, the possibility of clogged ink nozzles is reduced.
2. If power is turned off while paper is being fed in the printer, the sam e
operation m entioned above is perform ed and the driving power is turned
off after the paper is completely ejected. The tim e allowed is
approximately 30 seconds, m eaning voltage is flowing for 30 seconds
after the power is turned off.
Application of DC Voltage
Application
Voltage
Printer
Scanner
•
•
•
CR Motor
+42VDC
PF/Pum p Motor
Printhead drive
•
•
Scanner Motor
+24VDC
+12VDC
Option unit drive
Inverter board
CCD sensor board
Com m on
Control circuit
Sensors (CR HP, PE, ASF)
Control panel
+5VDC
Printhead control
Option unit logic
+3.3VDC
Control circuit
Operating Principles
Electrical Circuit Operating Principles
55
EPSON Stylus Scan 2500
Revision A
SECONDARY SIDE
Pow er signal
from MAIN
board/pow er
sw itch
+3.3V
+42V
+5V
ZD53
+5V line over
voltage lim itation
IC51
ZD91
+5V regulator
+24V line over
voltage lim itation
IC151
ZD52,87
+3.3V regulator
+42VDC line over
voltage lim itation
+24V
+12V
+42V line constant
control
ZD51,ZD81-86
+24V line over
voltage lim itation
IC52
ZD91
+24V
regulator
ZD42
+12V line over
voltage lim itation
IC53
+12V
regulator
Smoothing
circuit
C51,C52
Pow er drop
delay circuit
C57,Q82,
PC1
Photo coupler
D88
D89
D51
Q84
Transformer (T1)
C11
Q1
Main
sw itch-
Smoothing
circuit
Feedback
circuit
Q2,Q3,Q
31,IC1
Full w ave
rectifier circuit
Filter circuit
Fuse
F1
L1, R1,
C1-4
DB1
AC input
PRIMARY SIDE
Figure 2-22. B101 PSB/ PSE Board Block Diagram
Operating Principles
Electrical Circuit Operating Principles
56
EPSON Stylus Scan 2500
Revision A
1. As long as the AC power cable is plugged into a power source, voltage
flows through the primary side (bottom in figure above) of the power
supply board.
ground levels for the primary side (AC as well as DC) and secondary side
(DC only) are different, so they will short if they come into contact. The
photo coupler transm its signals via a photo em itter.
2. The fuse prevents damage to the power supply board in case the current
is too strong.
13. The feedback circuit 1) receives over-current inform ation from the photo
coupler by means of a photo receiver 2) monitors the transformer for
over-current and 3) receives power-supply inform ation/comm ands from
the MAIN board and power switch. The feedback circuit changes the
voltage sent from the m ain switching circuit to the transform er when
necessary.
3. The filter circuit acts to filter incoming electrical noise and to sm oothen
the electrical current.
4. The full wave rectifier circuit converts AC to DC.
5. The smoothing circuit stabilizes out the DC wave.
14. The power-drop delay circuit is a thirty-second tim er that activates
whenever the power is turned off. The thirty-second period is necessary
to guarantee safe com pletion of the power-down sequence.
6. The main switching circuit controls the flow of current to the transform er
(hence to the entire secondary side). The m ain switching circuit,
transformer, and feedback circuit work in com bination like the heart,
lungs, and brain (respectively) of the hum an body. The m ain switching
circuit is the variable-flow generator like the heart, the transform er
convert the power to a usable form like lungs adding oxygen to blood,
and the feedback circuit controls the flow like the brain controlling the
heartbeat/pulse.
2.5.2 B102 MAIN Board
The B102 MAIN Board controls the printer, scanner, copy function, pum ping,
paper feeding, and all signals to/from the control panel unit. The following
figure shows the MAIN Board circuit diagram for EPSON Stylus Scan 2500.
7. The transform er receives approxim ate 100V or 220V DC (depending on
the model) and steps the voltage down before sending it to the secondary
side.
8. The current is stabilized as it goes through another sm oothing circuit.
9. The 24V, 12V, 5V, and 3.3V regulators control the flow of current so that
only the rated voltage flows through each regulator. The input level
fluctuates but the output is constant.
10. The 42V, 24V, 12V, 5V, and 3.3V line over-voltage lim itation protectors
monitor their individual lines for any voltage over the rated am ount. If
over-current is detected, a signal is sent to the photo coupler to decrease
current.
11. The +42V line constant control is similar to a regulator in that it is always
working, but instead of fixing the over-current, it reports the over-current
to the photo coupler.
12. The photo coupler is one part of the over-current feedback system . A
photo coupler is necessary because electrical current cannot cross the
from the primary side to the secondary side and vice-versa; the absolute
Operating Principles
Electrical Circuit Operating Principles
57
EPSON Stylus Scan 2500
Revision A
1284 I/ F
CN1
CN3
USB
Option
IC9
1284 Transceiver
CN15
IC17
USB hub
CN2
Panel
Unit
System &Scanner
Block
(See the B101 MAIN
Board schem atic in
Chapter 7)
Scan
Mechani
sm
Local Copy Block
(See the B101 MAIN
Board schematic in
Chapter 7)
Buttons
1284
LED/ LCD
Printer Block
(See the B101 MAIN
Board schematic in
Chapter 7)
Print
Mechanis
m
MAIN Board
CN10
PSB/ PSE Board
Figure 2-23. B102 Main Board Block Diagram
Operating Principles
Electrical Circuit Operating Principles
58
EPSON Stylus Scan 2500
Revision A
The System & Scanner Block
The System & Scanner Block is all of the ICs that handle im age data from
the scanner. Also this block handles all control/communication signals
sent to and from the Control Panel unit as well as any installed options.
The Printer Block
The Printer Block is all the ICs that handle print data and com m unication
data to and from the print mechanism. The print data can come through
the USB or parallel port, and communication can be with the print
mechanism, System & Scanner Block, or host. One exam ple of
communication data from the System & Scanner Block would be a paper
feed signal generated when the user presses the Paper Feed button.
The Local Copy Block
The Local Copy Block receives scanned data from the System & Scanner
Block, rem oves the background color of the paper according to the local
copy setting, performs image processing to improve quality, converts
color from RGB to CMYK using the color matching table, and sends the
modified data to the Printer Block.
The USB hub
There are actually two USB interfaces (one for each IC block) on this
model plus the USB hub. The hub receives incoming signals or data and
determ ines which IC block to send the data to.
Operating Principles
Electrical Circuit Operating Principles
59
EPSON Stylus Scan 2500
Revision A
3.1 Unit Level Troubleshooting
Table 3-1. Printer Condition and Panel Stat us
Indicators
When a problem occurs, you can identify the defective unit according to the
symptom s exhibits. The table below lists the sym ptoms of certain problem s.
Once the problem is identified, refer to the flowchart that corresponds to the
problem.
Ink
Out
Error Status
Recovery
Pow e Ink out
Paper
Out
r
(Black)
(Color)
Load paper by pressing the
load/eject button.
The following flowchart illustrates the m ain steps of the troubleshooting
process.
Paper Out
---
---
---
---
On
Paper jam
condition
Elim inate a paper then
press the load/eject button.
Off
Off
Flash
NOTE: There is a special section for m otors and sensors that starts on
page 73.
No Ink
cartridge or
Ink end
Install a new black ink
cartridge by pressing the
load/eject button for 3
seconds.
---
On
---
---
Diagnose problem
(black)
Table 3-1, “Printer Condition and
Panel Status ”
No Ink
cartridge or
Ink end
Install a new color ink
cartridge by pressing the
load/eject button for 3
seconds.
---
---
Flash
On
On
Flash
On
---
Table 3-2, “Sym ptom s and
Problem s”
(color)
Maintenanc
e request
Change the waste ink pads
and reset the EEPROM.
Flash
Flash
Flash
Flash
Unit Level
Repair
Service the:
Turn the printer off and on
again. If the printer does
not recover, repair the
appropriate part.
Fatal error
Scanner
Mechanism ,
page 69
Printer Mechanism ,
page 65
Component
Level Repair
Or go directly to
Motors and Sensors
on page 73
Reassembly = Chapter 4
Adjustm ent = Chapter 5
Figure 3-1. Troubleshooting Process Flow chart
Troubleshooting
Unit Level Troubleshooting
61
EPSON Stylus Scan 2500
Revision A
3.1.1 Printer/ Scanner does not operate at pow er on
Table 3-2. Sym ptom s and Problem s
Sym ptom
Problem
Flow chart No.
Flowchart 3-1
Flowchart 3-2
Start
Printer does not
operate at power
on.
LEDs do not light.
Printer m echanism does not operate.
Error is indicated by LED indication.
No
AC voltage
= OK?
Adjust pow er
supply
Error is detected
Printing is not perform ed.
Abnorm al printing (m issing dot, etc.)
Print quality is poor.
Yes
Failure occurs
during printing.
Flowchart 3-3
Yes
Replace the fuse,
disconnect CN10
on MAIN board,
and turn on power
Is fuse
No paper is fed.
F1 burned out?
Printer does not
feed paper
correctly.
Paper feed is irregular.
Paper jam occurs.
Flowchart 3-4
Flowchart 3-5
No
Control panel
operation is
abnorm al.
No
Did
Check the output
voltage of CN2 on
the pow er supply.
No response to button access.
the fuse burn
out again?
Yes
Yes
No
Is the
output
voltage
norm al?
Yes
Replace the
pow er supply.
Replace the MAIN
board.
Check the m otors,
printhead, and
other
com ponents.
End
Flow chart 3-1.
Troubleshooting
Unit Level Troubleshooting
62
EPSON Stylus Scan 2500
Revision A
3.1.2 Error is detected
3.1.3 Failure occurs during printing
Start
Start
Print a self
test.
Check the LCD
m essage and refer
to Table 3-1.
No
Did it print
properly?
Yes
Is the
problem carriage
related?
Turn off the Stylus
Scan and m ove the
carriage by hand.
Yes
Yes
MAIN
board cables
are OK?
Yes
Is
No
Perform
print quality
norm al?
No
adjustm ent. See
Section 5.2 on page
114.
Does it
m ove sm oothly?
Yes
No
Is it an ink
cartridge error?
Replace the ink
cartridge.
No
Connect them .
Perform cleaning.
Yes
No
No
Replace MAIN
board if the CR
m otor operates
properly.
Problem
solved?
Refer to Table 3-4.
No
Replace the ink
cartridge and
print self test.
Maintenance Error
Yes
Problem
solved?
Does it
m ove sm oothly?
Yes
Yes
No
Replace the w aste ink
pads and reset the
counter. See Section
4.5.1 on page 92.
No
Problem
solved?
Yes
Does it
m ove sm oothly?
Yes
Problem
solved?
Yes
No
No
Check the ink
Refer to Table 3-4.
cartridge sensor and
replace the printhead
if necessary.
Replace the
MAIN board.
See Table 3-4.
No
Yes
Problem
solved?
End
End
End
End
End
Flow chart 3-2.
Flow chart 3-3.
Troubleshooting
Unit Level Troubleshooting
63
EPSON Stylus Scan 2500
Revision A
3.1.4 Printer does not feed paper correctly
3.1.5 Control panel operation is abnorm al
START
START
NO
Paper
Control
loaded correctly
panel connected
in ASF?
correctly?
NO
Set the paper correctly.
YES
Connect the
control panel
correctly.
NO
PF roller
and platen
rotate?
YES
Rem ove any
NO
Is the
problem
solved?
YES
Is the
PF m otor
running?
Check the PF m otor.
No problem = replace
the MAIN board.
obstruction in the paper
path if there is any.
YES
NO
Replace the
control panel.
Clean the roller of
paper path.
NO
Control
panel connected
correctly?
NO
Is the
problem
solved?
Replace the
YES
MAIN Board.
Refer to Table 3-4.
YES
END
END
END
END
Flow chart 3-5.
Flow chart 3-4.
Troubleshooting
Unit Level Troubleshooting
64
EPSON Stylus Scan 2500
Revision A
3.2 Printer Related Troubleshooting
This section provides instruction for repairing the printer m echanism . It
describes various problems, symptom, likely causes, checkpoints, and
solutions. Select appropriate symptom from the table and check each parts
and its function as described in the checkpoint.
Table 3-3. Printer-Specific errors
Error
Cause
Solution
When one or m ore ink cartridges are
alm ost em pty, the printer enters the
low-ink state and continues printing.
When the cartridge is com pletely em pty, cartridge.
the printer indicates an ink-out error and
stops printing.
Install a new ink
Ink out
If the printer fails to properly load paper, Load paper and press
Paper out
Paper jam
it indicates a paper-out error.
the Load/Eject button.
Press the Load/Eject
If the printer fails to properly eject paper, button. If this does not
it indicates a paper jam .
clear the error, rem ove
the paper by hand.
If the printer detects that one of the ink
cartridges is not installed, it indicates a
no-ink-cartridge error.
No ink
cartridge
Install a new ink
cartridge.
When the total am ount of waste ink
reaches the lim it, the printer indicates a
m aintenance request and stops printing.
Maintenance
request
Replace the waste ink
pads.
Turn off the Stylus
Scan and turn it back
on. If the error does not
clear, service.
A carriage control or CG access error
has occurred.
Fatal error
Troubleshooting
Printer Related Troubleshooting
65
EPSON Stylus Scan 2500
Revision A
Table 3-4. Repair of the Printer Mechanis m
Sym ptom
Condition
Cause
Check Point
Solution
Foreign substances are
loaded in the PF gears.
Manually drive the platen drive gear and
check it if it rotates norm ally.
Rem ove any foreign substances.
Replace the PF m otor.
Abnorm al PF m otor
operation when the
power is turned on.
Abnorm al pum p
m echanism operation
The PF m otor is defective.
(Refer to Table5-1)
Check the inner coil resistance and see if
there is any disconnection of the coil.
The pum p tube is
crashed.
Check the tube visually.
Fix the crashed part by the airgun.
Replace the cap m echanism .
Connect the tube properly.
Replace the cap m echanism .
Rem ove any foreign substances.
Replace the CR m otor.
Capping rubber is
dam aged or deform ed.
Check the capping rubber visually.
Used ink does not go
through the waste ink
tube.
Ink is not absorbed or
is poorly absorbed.
Check if the tube is out of the cap
visually.
The tube is out of the cap.
Pum p bulb is not closed
at absorption.
Check the bulb operation visually.
Foreign substance in the
CR drive gear.
Check visually if there is any substances
or not.
Abnorm al carriage
operation at power on.
Check the inner coil resistance and see if
there is any disconnection of the coil.
CR m otor is defective.
Abnorm al carriage
operation.
Check whether the carriage m oves
sm oothly when m oved m anually.
Clean and lubricate the carriage
guide axis.
Abnorm al carriage
operation during
printing.
Carriage m ovem ent is not
sm ooth.
Adjust tension m echanism or
replace it.
Check tension of the tim ing belt.
Check if there is any foreign substances
in the carriage path.
Rem ove any foreign substances.
Troubleshooting
Printer Related Troubleshooting
66
EPSON Stylus Scan 2500
Sym ptom
Revision A
Table 3-4. Repair of the Printer Mechanism (cont.)
Condition
Cause
Check Point
Solution
Head FFC is out of
connection.
Check if the head FFC on the board or
carriage is connected surely.
Connect the FFC properly.
The FFC is disconnected
inside.
Check the FFC by using a tester.
Replace the FFC.
Replace I/C.
The carriage m oves,
but no printing is
perform ed.
Printing is not
perform ed.
Install a new I/C and perform the self-
test.
I/C is defective.
If the condition does not im prove even
after 2or 3 tim es cleaning operation,
replace the head unit and perform the
self-test.
Head unit is defective.
Replace the head unit.
Perform the cleaning.
Print head surface is not
clean.
Perform the cleaning operation several
tim es and check printing.
(dot m issing)
Only a particular dot
causes abnorm al
printing.
If condition does not im prove
even after the cleaning, replace
the head.
Perform the cleaning operation several
tim es and check printing.
The head unit is defective.
Capping absorber is
touching the head
surface.
Replace the head absorber if it is
deform ed.
Check the head absorber visually.
Print head surface is not
clean. (dot-m issing)
Perform the cleaning operation several
tim es and check printing.
Perform the cleaning.
Replace the head FFC.
Connect the FFC properly.
The head FFC is
disconnected inside.
Abnorm al printing
Check the FFC by using a tester.
A dot is not printed
occasionally.
The head FFC is out of
connection.
Check if the head FFC on the board or
carriage is connected surely.
If condition does not im prove
even after the cleaning, replace
the head.
Perform the cleaning operation several
tim es and check printing.
The head unit is detective.
I/C is defective.
Install the new I/C and perform self-test. Replace I/C.
Check if the head FFC on the board or
The head FFC is out of
connection.
Connect the FFC properly.
carriage is connected surely.
Black specks or dots.
Replace the head if there is no
connection problem with the FFC.
The head unit is detective. Check connection with the head FFC.
Troubleshooting
Printer Related Troubleshooting
67
EPSON Stylus Scan 2500
Sym ptom
Revision A
Table 3-4. Repair of the Printer Mechanism (cont.)
Condition
Cause
Check Point
Solution
A vertical line is not
aligned.
Bi-directional alignm ent is
not adjusted.
Perform Bi-D adjustm ent.
Refer to Chapter4.
Refer to Chapter4.
Refer to Chapter4.
Head angle is not correct. Perform head angle adjustm ent.
Platen gap is not correct. Perform platen gap adjustm ent.
Abnorm al printing
(continued)
Dot shooting direction is
Perform the cleaning operation several
tilted because head
White line appears in
the im age data.
Perform the cleaning operation.
tim es and check printing.
surface is not clean
Install a new I/C and perform the self-
I/C is defective.
test.
Replace I/C.
Perform the cleaning operation several
Head unit is defective.
Replace the head unit.
tim es and check printing.
Clean the PF roller by the cleaning
sheet. Replace the PF roller if it
does not recover.
Check if the PF roller rotates when paper
Friction of the PF roller.
is not fed.
Abnorm al operation of
the hopper.
Check m ovem ent of the ASF hopper
visually.
Replace ASF.
Abnorm al paper
feeding.
Paper is not fed.
Malfunction of ASF drive
change-over.
Replace gears of the ASF drive
change-over.
Check if the ASF gear rotates visually.
Clean the PF roller by the cleaning
sheet. Replace the PF roller if it
does not recover.
Check if the PF roller slips during paper
feeding.
Friction of the PF roller.
Troubleshooting
Printer Related Troubleshooting
68
EPSON Stylus Scan 2500
Sym ptom
Revision A
Table 3-4. Repair of the Printer Mechanism (cont.)
Condition
Cause
Check Point
Solution
Check the signal level of the ASF sensor.
(Refer to Table 5-2)
ASF sensor is defective.
Replace ASF sensor.
Check the signal level of the PE sensor.
(Refer to Table 5-2)
PE sensor is defective.
HP sensor is defective.
Replace PE sensor.
Check the signal level of the HP sensor.
(Refer to Table 5-2.)
Printer stops during
initialization.
Fatal error appears.
Head FFC is disconnected. Check if the head FFC is connected.
Connect the head FFC.
Replace the CR m otor if there is no
problem in the cable connection.
CR m otor is defective.
PF m otor is defective.
Check the CR m otor cable is connected.
Check if the PF m otor cable is connected.
Replace the PF m otor if there is no
problem in the cable connection.
Troubleshooting
Printer Related Troubleshooting
69
EPSON Stylus Scan 2500
Revision A
3.3 Scanner Troubleshooting
Table 3-6. Service Level Troubleshooting Starts Here
Phenom enon
Description
Ref, Table
This section describes troubleshooting from the abnorm al phenom enon. You
can isolate the faulty unit based on the abnorm al phenom enon. See
Table 3-6, “Service Level Troubleshooting Starts Here,” on page 69 to find the
closest phenomenon and the corresponding table to refer to.
•
•
The Operate light on the control
panel does not com e on.
Table 3-7
Table 3-8
Scanner does not
operate with power on.
Scanner does not operate the
initialization.
•
•
Carriage unit does not operate.
Table 3-5. User-level Scanner-Specific errors
Table 3-9
Fatal Error occurs and
is not cleared after
turning off and back on
the scanner.
Carriage unit crashes into the
fram e, and an error is indicated.
Table 3-10
Error
Cause
Solution
•
•
The lam p is broken.
•
The lam p does not light up.
Turn off the Stylus Scan and
turn it back on. If the error does
not clear, service.
Table 3-11
Table 3-12
Stylus Scan turned on before
the transportation screw was
rem oved.
Scanned im age is
unclear.
---
Fatal error
(Disposition)
•
System breakdown.
Turn off the lam p and stop
operation. Set bit 7 of the
status byte.
•
•
SCSI Interface Error
USB Interface Error
Table 3-13
Table 3-14
“Interface Error” is
indicated.
•
Optional unit does not operate
correctly.
“Option Error” occurs.
After rem oving the docum ent,
turn the Stylus Scan off and
back on, or send the ESC @
com m and.
Table 3-15
Optional unit(ADF/TPU)
do not operate.
ADF paper
jam
Parallel I/F init: active pulse
ADF fails to eject the docum ent.
Unidentified com m and detected.
Table 3-7. Pow er problem s
(Disposition)
Cause
Step
Checkpoint
Finding
Solution
Turn off the lam p and stop
operation. Set bit 7 of the
status byte.
Is the connector
CN1 on the power
board
Connector CN1 on
the power board is
disconnected.
Connect CN1
properly.
1
Yes
disconnected?
Connector CN1 or
CN2 on the power
board
Is the connector
CN1 or CN2 on
the power board
disconnected?
The scanner sent a NACK signal
and is waiting for the next
com m and. If an incorrect
com m and or param eter is
received, it is disregarded and the
previous value is m aintained.
Com m and
error
Send a correct com m and to
clear the error.
Connect CN1 or 2
properly.
2
3
Yes
Yes
disconnected.
Fuse on the power
board has blown
out.
Has the fuse on
the power board
blown out?
Replace the fuse.
ADF cover
open
ADF cover open
Close the cover.
Close the cover.
Maintenance
cover open
Maintenance cover open
Troubleshooting
Scanner Troubleshooting
70
EPSON Stylus Scan 2500
Revision A
Table 3-7. Pow er problem s (cont.)
Table 3-9. Carriage Unit does not operate
Cause
Step
Checkpoint
Finding
Solution
Cause
Step
Checkpoint
Finding
Solution
With the scanner
On, check the
voltage output
level between
pins 8/9(+) and
pins 6/7(-) on the
power board. Is
the voltage
With the scanner power
on, check the voltage
output level between the
Pins 4/5(+) and Pins 6/7 (-)
for CN101 on the power
board. Is it +24VDC?
Power
board is
broken.
Replace the
power board.
1
No
The power board.is
broken.
Replace the power
board.
4
No
•
With the scanner upper
case rem oved, does CR
m otor m ove?
Check the
+5VDC?
carriage m ove
m echanism and
replace the
corresponding
parts or
disassem ble and
assem ble the
part.
Carriage
Unit (or CR
m ove
m echanism )
is broken.
Is the connector
CN4 on the
control board
disconnected?
•
With the CR m otor
rem oved, does the
carriage unit m ove
sm oothly?
Connector CN4 on
the power board is
disconnected.
Connect CN4
properly.
2
No
5
6
Yes
---
The control board is
broken.
Replace the
control board.
---
Table 3-8. Scanner does not initialize
Cause
Step
Checkpoint
Finding
Solution
Is the connector
CN1 on the power
board
Connector CN1 on
the power board is
disconnected.
Connect CN1
properly.
1
Yes
disconnected?
Troubleshooting
Scanner Troubleshooting
71
EPSON Stylus Scan 2500
Revision A
Table 3-9. Carriage Unit does not operate (cont.)
Table 3-10. Carriage unit crashes into fram e
Cause
Step
Checkpoint
Finding
Solution
Cause
Step
Checkpoint
Finding
Solution
Disconnect the connector
CN6 on the control board,
then using the tester,
check the coil resistance
between Pin2 and 4 and
between Pin1 and 3. Is the
resistance of 2 points
about 6.2Ω?
Check the signal
level.
•
Check the
Replace the CR
m otor.
No
signal/status
level between
C(+) and E(-) for
PC2.
Replace the CR
hom e position
sensor(PC1/PC2)
on the control
board.
CR hom e position
sensor is broken.
1
--
H(about 4.5V)/
when PC1-PC2 is
closed.
If any m otor coil is
shorted, check the CR
m otor drive circuit in the
order below.
CR Motor is
broken
L(0.3V)/when PC1
-PC2 is opened.
3
1.)Set the tester on Ohm s.
2.)Place the (-) lead of the
tester on any of Pins 1,2, 3
or 4 for CN1 on the control
hoard.
Table 3-11. The lam p does not light up.
Replace the
power board.
No
Cause
Step
Checkpoint
Finding
Solution
Connector CN5 on
the control board is
disconnected.
Is the connector CN5
on the control board
disconnected?
3.)Place the (+) lead of the
tester on Pin 6/7 for CN4
on the control board.
Connect CN5
properly.
1
Yes
With the scanner off, does
the m eter show “∞”?
Connector CN1 or
CN2 on the CCD
board
Is the connector CN1
or CN2 on the CCD
board disconnected?
Connect CN1 or
2 properly.
2
3
Yes
No
Control
board is
broken.
Replace the
control board.
disconnected.
4
---
---
Lam p is not
Is the lam p
connected properly
on the inverter
board.
connected properly
on the inverter
board?
Connect the
lam p properly.
Does the lam p light
after it is replaced?
Replace the
lam p.
Lam p is broken.
4
5
6
Yes
Yes
---
Does it operate
properly after
replacing it?
Inverter board is
broken.
Replace the
inverter board.
Control board is
broken.
Replace the
control board.
---
Troubleshooting
Scanner Troubleshooting
72
EPSON Stylus Scan 2500
Revision A
Table 3-12. Poor im age quality
Table 3-14. Parallel Interface Error
Cause
Step
Checkpoint
Finding
Solution
Cause
Step
Checkpoint
Finding
Solution
Is the im age
scanned clearly
after cleaning the
m irror?
On the Windows,
go to “My
Com puter”→”Pro
perty”→”Device
Manager”, then,
check if
“Universal serial
bus controller” is
effective.
Mirror in the
carriage unit is
dirty.
Clean the lam p
surface.
1
No
Host and O/S
(Windows95/98)
does not support
the USB.
1
No
Replace the host.
CCD sensor board
is broken.
Replace the CCD
board.
2
3
---
---
--
Control board is
broken.
Replace the
control board.
---
Replace the USB
cable. Is the
operation
USB cable is
broken.
Replace the USB
cable.
Table 3-13. SCSI Interface Error
2
3
Yes
---
Cause
Step
Checkpoint
Finding
Solution
norm al?
Check the user’s
guide for the
correct setting. Is
the setting
Control board is
broken.
Replace the
control board.
---
Term inator switch
is set wrong.
Set the term inator
correctly.
1
No
Table 3-15. Option unit m alfunction
correct?
Cause
Step
Checkpoint
Finding
Solution
Check the user’s
guide for the
correct setting. Is
the setting
Is the connector
CN1 on the
control board
disconnected?
SCSI setting is
wrong.
Set the SCSI
correctly.
The cable of the
optional unit is
disconnected.
2
No
Connect the CN1
properly.
1
Yes
correct?
Replace the SCSI
cable. Is the
operation
Control board is
broken.
Replace the
control board.
2
3
---
---
---
SCSI cable is
defective.
Replace the SCSI
cable.
3
4
Yes
---
norm al?
+24V line:Lam p,
Motor
Replace the
defective part of
the optional unit.
Optional unit is
broken.
Control board is
broken.
Replace the
control board.
---
+5V line:Sensor,
logic circuit.
Troubleshooting
Scanner Troubleshooting
73
EPSON Stylus Scan 2500
Revision A
3.4 Troubleshooting Motors and Sensors
Table 3-16. Motor Resistance and Measurem ent Procedure
Motor Nam e
Location
Check Point
Resistance
Pins 1 & 3,
Pins 2 & 4
CR Motor
CN7 (MAIN board *)
7.8 Ohm s ± 10%
Pins 1 & 3,
Pins 2 & 4
PF (Pum p)
Motor
CN8 (MAIN board *)
7.8 Ohm s ± 10%
Table 3-17. Sensor Check
Sensor Nam e
Location
Signal Level
Sensor Status
Paper End
Sensor
CN5/Pins 1 & 2
Close: m ore than 2.4V No paper
Out of hom e
Carriage Hom e
Position Sensor
CN4/ Pins 1 & 2
Close: m ore than 2.4V
Close: m ore than 2.4V
Off: m ore than 2.4V
Off: m ore than 2.4V
position
Out of hom e
position
ASF HP Sensor CN6/ Pins 1 & 2
Black Cartridge
CN9/Pins 1 & 19
Sensor
Black cartridge
installed
Color Cartridge
CN9/Pins 2 & 19
Sensor
Color cartridge
installed
Change the VH
voltage of charge
pulse for com m on
driver circuit
Therm istor
CN9/ Pins 2 & 19 Analog data
Troubleshooting
Troubleshooting Motors and Sensors
74
EPSON Stylus Scan 2500
Revision A
4.1.1 Precautions for Disassem bling the Printer
4.1 Overview
See the precautions given under the headings “WARNING” and “CAUTION”
below, before disassembling or assem bling the EPSON Stylus Scan 2500.
This chapter describes procedures for disassembling the main components of
the EPSON Stylus Scan 2500. Unless otherwise specified, disassem bly units
or components can be reassembled by reversing the disassem bly procedure.
Therefore, no specific assembly procedures are included in this chapter, but
special points regarding re-assem bly are given under the heading “CHECK
POINT”. Any adjustm ents required after disassem bling the units are
described under the heading “REQUIRED ADJ USTMENT”.
Disconnect the pow er cable before disassem bling or
assem bling the printer.
W
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Wear protective goggles to protect your eyes from
ink. If ink gets in your eye, flush the eye w ith fresh
w ater and see a doctor im m ediately.
If ink com es into contact w ith your skin, w ash it off
w ith soap and w ater. If irritation occurs, contact a
physician.
A lithium battery is installed on the MAIN Board of
this printer. Be sure to observe the follow ing
instructions w hen servicing the battery:
Keep the battery away from any m etal or other batteries
so that electrodes of the opposite polarity do not com e in
contact with each other.
Do not heat the battery or put it near fire.
Do not solder on any part of the battery. (Doing so may
result in leakage of electrolyte from the battery, burning
or explosion. The leakage may affect other devices close
to the battery.)
Do not charge the battery. (An explosion m ay be
generated inside the battery, and cause burning or
explosion.)
Do not dism antle the battery. (The gas inside the battery
m ay hurt your throat. Leakage, burning or explosion m ay
also be resulted.)
Do not install the battery in the wrong direction. (This
m ay cause burning or explosion.)
Disassem bly & Assem bly
Overview
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EPSON Stylus Scan 2500
Revision A
Danger of explosion if the battery is incorrectly replaced.
Replace only w ith the sam e or equivalent type
W
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N
I
N
G
Never rem ove the ink cartridge from the carriage
unless this m anual specifies to do so.
C
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recom m ended by the m anufacture. Dispose the used
batteries according to governm ent’s law and regulations.
When transporting the printer after installing the
ink cartridge, be sure to pack the printer for
transportation w ithout rem oving the ink cartridge.
Use only recom m ended tools for disassem bling,
assem bling or adjusting the printer.
Risque d’explosion si la pile est rem placée
C
A
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I
O
N
Apply lubricants and adhesives as specified. (See
Chapter 6 for details.)
incorrectm ent. Ne rem placer que par une pile du m êm e
type ou d’un type équivalent recom m andé par le
fabricant. Elim iner les piles déchargées selon les lois et
les règles de sécurité en vigueur.
Make the specified adjustm ents w hen you
disassem ble the printer. (See Chapter 5 for details.)
When assem bling, if an ink cartridge is rem oved and
needs to be installed again, be sure to install a new
ink cartridge because of the follow ing reasons;
Once the ink cartridge mounted on the printer is
removed, air comes into and creates bubbles in the
cartridge. These bubbles clog ink path and cause printing
malfunction.
If an ink cartridge in use is rem oved and is reinstalled,
ink quantity will not be detected correctly since the
counter to check ink consum ption is cleared.
For the above reasons, m ake sure to return the
printer to the user w ith a new ink cartridge
installed.
Disassem bly & Assem bly
Overview
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EPSON Stylus Scan 2500
Revision A
4.1.2 Tools
4.1.3 Specification for Screw s
Table 4-1 lists the tools recom m ended for disassem bling, assem bling, or
adjusting the printer. Use only tools that m eet these specifications.
Table 4-2 shows screw specifications. During assem bly and disassem bly,
m ake sure that the specified types of screws are used at proper locations,
referring to the table below. Note that the screw num bers described in the
m anual correspond to the numbers in the table.
Table 4-1. Tool List
Com m ercially
Available
Tools
(+) Driver No.2
Code
Table 4-2. Screw Characteristics
Nam e
Size
yes
B743800200
B743800400
B741000100
+Bind, S-tight
(CBS)
(+) Driver No.1
Tweezers
yes
3X6
yes
+Bind, S-tight
3X10
3X6
Hexagon Box Driver
+Bind, P-tight
(CBP)
yes
B741700100
(Opposite side: 5.5m m )
M3 (5.5m m ) wrench
Pliers
yes
yes
yes
-
-
-
+Bind, P-tight
+Bind, P-tight
3X10
3X8
Acetate tape
+Pan head
(CP)
3X4
3X6
+Bind, S-tight,
Sem s R2
(CBS Sem s)
Disassem bly & Assem bly
Overview
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EPSON Stylus Scan 2500
Revision A
Table 4-3. Screw Types and Abbreviations
Head
Washer
(assem bled)
Body
Top
Side
1. Cross-recessed
head
1. Bind
1. Plain washer
1. Norm al
2. Outside
toothed lock
washer
2. Slotted head
2. S-tight
(with Notch)
3. Spring washer
2. Pan
3. P-tight
3. Cup/flange
4. Tapping
4. Truss
Disassem bly & Assem bly
Overview
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EPSON Stylus Scan 2500
Revision A
4.1.4 Service Checks After Repair
Before returning the printer after servicing, use the check list below, which
enables you to keep record of servicing and shipping m ore efficiently.
Table 4-4. Inspection Checklist for the Stylus Scan
Category
Com ponent
Self-test
Item to check
Is the operation norm al?
Is Check Required?
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
On-line test
Print head
Was the on-line test successful?
Is ink ejected norm ally from all nozzles?
Does the carriage m ove sm oothly?
Any abnorm al noise during m ovem ent?
Carriage
Any dirt or obstacles around the shaft of gear
cover?
Checked / Not necessary
Checked / Not necessary
m echanism
Is the CR m otor at the correct tem perature
(not over heating)?
Printer units
Is paper fed sm oothly?
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Does paper get jam m ed?
Does paper get skew during paper feeding?
Are papers m ulti fed?
Paper feeding
m echanism
Does the PF m otor get overheated?
Abnorm al noise during paper feeding?
Is the paper path clear of all obstructions?
Disassem bly & Assem bly
Overview
79
EPSON Stylus Scan 2500
Revision A
Table 4-4. Inspection Checklist for the Stylus Scan
Category
Com ponent
Item to check
Is the glass surface clean?
Is Check Required?
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Mechanism
Does paper skew during loading or feeding
Any abnorm al noise during m ovem ent?
Does the carriage m ove sm oothly?
Any abnorm al noise during m ovem ent?
Scanner unit
Any dirt or obstacles around the shaft of gear
cover?
Carriage m echanism
Checked / Not necessary
Checked / Not necessary
Is the CR m otor at the correct tem perature
(not over heating)?
Does the lam p turn on and successfully
perform white-reflective test near hom e
position?
Lam p
Checked / Not necessary
Adjustm ent
Lubricant
Specified adjustm ent item s Are adjusted conditions all right?
Checked / Not necessary
Checked / Not necessary
Is lubrication applied to the specified
locations?
Specified lubricated item
Is the quantity of lubrication adequate?
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Checked / Not necessary
Printer ROM version
Scanner ROM version
Ink cartridges
Newest version:
Function
Newest version:
Are the ink cartridges installed correctly?
Are all five pads attached to the bottom ?
Pads on bottom
Shipping
Others
Protection conditions
during transport
Are all the pointed parts firm ly fixed?
Checked / Not necessary
Checked / Not necessary
Attached item s
Are all attached item s from users included?
Disassem bly & Assem bly
Overview
80
EPSON Stylus Scan 2500
Revision A
4.2 Disassem bly Procedures
The flowchart below shows procedures for disassembly.
Before servicing the Stylus Scan, perform these
operations as described in the User’s Guide.
Start
Ink cartridge
removal
Pow er off &
unplug
CR home position
Rem oval of the
housing
Top cover
Rear cover
Control panel
Side covers
Removal of the
Scanner Mechanism
Sensor and option
I/ F removal
Scanner frame
removal
Scanner removal
B102 MAIN Board
Removal of the
circuit board tray
B102 PSB/PSE
Board
Rem oval of printer
consumables
Fram e & paper
eject tray rem oval
Waste ink pads
PF m otor
Cleaning assembly
CR Motor
Disassembly of the
Printer Mechanism
Printhead
removal
ASF rem oval
Shaft removal
ASF home
position sensor
Paper edge
sensor removal
CR HP sensor
removal
Paper feed rollers
Disassem bly & Assem bly
Disassem bly Procedures
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EPSON Stylus Scan 2500
Revision A
4.3.2 Rem oving the top cover
4.3.3 Rem oving the control panel assem bly
1. Remove the rear cover as described above.
The control panel assem bly is replaced as one piece; there is no board-level
repair.
2. Remove the Document cover, the Maintenance cover, and the optional
interface cover.
1. Remove the rear cover and top cover as described in the two previous
sections.
3. Move the scanner mechanism towards the m iddle of the Stylus Scan.
4. Remove three screws
2. Remove two screws (CBS 3x10) and slightly pull out the control panel
assembly.
3. Remove the FFC.
Remove three CBS 3x6
screw s.
When re-inserting the FFC into the control panel board
connector, m ake sure the FFC is fully inserted but do not
use too m uch force.
Also, the connector is difficult to see properly so it is easy
to scrape or peel off the connecting strips at the end of
the FFC. You need to check the strips at the end of the
FFC for w ear, folds, and tears every tim e you rem ove the
FFC.
C
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5. Lift the top cover from the screw-side and slide it away from you so that
the hooks clear the fram e on the opposite side.
Disassem bly & Assem bly
Rem oving the Housing
83
EPSON Stylus Scan 2500
Revision A
4.3.4 Rem oving the side covers
4.3.5 Rem oving the scanner support fram e
1. Remove the rear and top covers as described in “Removing the rear
cover” on page 82 and “Rem oving the top cover” on page 83.
To access the printer mechanism , printer motors, waste ink pads, or the B102
Power Supply board, you need to rem ove the scanner support fram e. You
only need to remove the scanner from the scanner support fram e when
servicing the scanner mechanism .
the cover by pulling out and up from the top.
1. Remove the rear cover and top cover as described in “Rem oving the
Housing” on page 82.
2. Pull out the circuit board tray as described in “Removal of the Circuit
Board Tray” on pag e90, and rem ove the scanner FFC (CN14). Also
remove the CN11, CN12, and CN15 connectors.
3. Remove the side covers as described in “Removing the side covers” on
page 84.
4. On the left side of the Stylus Scan pull the Scanner HP sensor cable,
Maintenance-cover-open cable, and Option-interface cable through the
clips and hole in the left-side fram e.
Rem ove one screw
in front and one
Pull the cables out of the clips and out
through the other side of this hole.
Be very careful w hen rem oving or replacing the side
C
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I
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N
covers. The hooks at the bottom are precisely positioned,
and forcing them in or out can easily break them .
3. Repeat this process for the right-side cover after removing the paper-
thickness lever handle (blue).
Disassem bly & Assem bly
Rem oving the Housing
84
EPSON Stylus Scan 2500
Revision A
5. Remove five screws (CBS 3x6) securing the scanner support fram e to the
printer mechanism frame, and remove the scanner support fram e.
4.3.6 Rem oving the paper eject assem bly
scanner m echanism .
1. Remove the rear cover and top cover as described in “Rem oving the
Housing” on page 82.
2. Remove the side covers as described in “Removing the side covers” on
page 84.
3. Remove the scanner support fram e as described in “Rem oving the
scanner support frame” on pag e84.
4. Remove three screws (CBS 4x6)
Remove these five screw s from the
scanner support plate.
Scanner HP sensor
Remove one screw on the
right side.
Maintenance cover open
sensor
Option interface
Disassem bly & Assem bly
Rem oving the Housing
85
EPSON Stylus Scan 2500
Revision A
4.3.7 Rem oving the pow er supply board upper fram e
1. Remove the rear cover and top cover as described in “Rem oving the
Housing” on page 82.
2. Remove the side covers as described in “Removing the side covers” on
page 84.
3. Remove the scanner support fram e as described in “Rem oving the
scanner support frame” on pag e84.
4. Remove one connector for the AC cable, and one screw (CBS 3x6) and
one spacer.
Rem ove tw o screw s
on the left side.
NOTE: The picture above shows the scanner hom e-position sensor
the left side fram e. You can either leave them as shown above
or rem ove them along with the option connector cable as
describe in attached to the side fram e in “Rem oving the
scanner support fram e” on pag e84.
Spacer and
connector
5. Carefully rem ove the paper eject assembly to avoid scratching the surface
on any of the metal parts.
Disassem bly & Assem bly
Rem oving the Housing
86
EPSON Stylus Scan 2500
Revision A
5. Remove one screw (CBS 3x6) securing the power-button board and one
screw (CBS 4x6) securing the upper fram e..
4.3.8 Rem oval of the B102 PSB/ PSE Board
1. Remove the rear cover and top cover as described in “Rem oving the
Housing” on page 82.
2. Remove the side covers as described in “Removing the side covers” on
page 84.
3. Remove the scanner support fram e as described in “Rem oving the
scanner support frame” on pag e84.
4. Remove the paper eject assembly as described in “ Removing the paper
eject assembly” on page 85.
Rem ove tw o
screw s.
5. Remove the power supply board upper fram e as described in “Removing
the power supply board upper frame” on page 86.
6. Disconnect the power cable leading to the B102 MAIN board, and rem ove
three screws (CBS 3x6).
6. Pull the upper frame a little to the center and front of the Stylus Scan.
Remove the cable protector and cables. Remove the power board fram e.
Remove one
connector and
three screw s.
Disassem bly & Assem bly
Rem oving the Housing
87
EPSON Stylus Scan 2500
Revision A
4. Remove two screws (CBS 4x6) and two spacers.
4.3.9 Rem oving the printer m echanism
1. Remove the rear cover and top cover as described in “Removing the
Housing” on pag e82.
2. Remove the side covers as described in “Removing the side covers” on
page 84.
3. Remove one screw (CBS 3x6) from the right-side fram e.
Tw o screw s
and spacers
NOTE:
As show n in the above photos, you do not have to
rem ove the scanner fram e or right-side fram e to
rem ove the printer m echansim .
C
H
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C
P
O
I
N
When replacing the printer, you need to be careful
about 1) the printer position on the base and 2) the
spacer edge m ust be parallel to the printer fram e.
Disassem bly & Assem bly
Rem oving the Housing
88
EPSON Stylus Scan 2500
Revision A
5. Remove three screws (CBS 4x6) and one screw (CBS 3x6).
6. Remove two screws (CBS 3x6) and lift the side panel from the bottom to
finally see the bare, naked printer m echanism .
Remove three screw s.
Rem ove tw o screw s.
Remove one screw .
Disassem bly & Assem bly
Rem oving the Housing
89
EPSON Stylus Scan 2500
Revision A
4.4 Rem oval of the Circuit Board Tray
The plastic cable protectors are held in place w hen the
tray is shut, but they can easily break or chip w hen
rem oving or replacing the tray. Be careful not to tw ist or
force the protectors.
C
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Unlike the Stylus Scan 2000, the 2500 contains only the B102 MAIN board in
the circuit board tray. See Section 4.7.1.2 for details on removing the B102
PSB/PSE board.
1. Remove the rear cover as described in “Removing the rear cover” on
page 82.
When replacing the cables in the protectors, keep in
m ind that the protectors m ust be fully inserted so that
the hooks properly attach to the tray.
C
H
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C
2. Remove four CBS 3x6 screws securing the circuit board tray.
P
O
I
N
Also, the protectors slide halfw ay under the printer
m echanism fram e. If the protectors are not fully inserted
under the fram e, there w ill be a gap betw een the fram e
and the top edge of the circuit board tray.
4. Remove ten connectors and three FFCs as follows.
To the scanner: CN14, CN11, CN12, CN13
To the control panel: CN2
To the Power Supply board: CN10
Remove four screw s.
To the printer: CN4, CN5, CN6, CN7, CN8, CN9
To the option interface: CN15
3. Pull out the tray slightly, and using a flat-tip screwdriver unhook the
cable-protector clip hooks from the tray. Rem ove the clips from the tray.
5. To remove the B102 MAIN board, remove
Disassem bly & Assem bly
Rem oval of the Circuit Board Tray
90
EPSON Stylus Scan 2500
Revision A
4. Remove the spacer on the left side of the tray and carefully pull the tray
out and downward.
4.5.1 Rem oving the w aste ink pads
1. Remove the rear cover and top cover as described in “Removing the
Housing” on pag e82.
When re-installing the w aste ink tank, m ake sure to
secure the hooks on the left of the tray on top of the
spacer.
C
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C
P
O
I
N
2. Remove the scanner support fram e as described in “Removal of the
Circuit Board Tray” on page 90.
3. Remove one screw (CBP 3x8) that secures the waste ink tank and is
located on the right side of the printer mechanism .
5. Remove one screw (CBP 3x10) securing the waste ink tank cover, and
then rem ove the cover.
(CBP 3x8)
6. Carefully remove the old waste ink pads so as not to get yourself or
anyone/anything else dirty.
Spacer
Waste ink tank
Disassem bly & Assem bly
Rem oval of the Printer Consum ables
92
EPSON Stylus Scan 2500
Revision A
7. Release a hook securing the pum p assem bly to the fram e and rem ove the
pump assembly, moving it toward the right. (Refer to Figure 4-2 on the
next page.
4.5.2 Rem oving the cleaning assem bly (Pum p and
Cap)
1. Remove the housing as described in “Removing the Housing” on
page 82.
Do not dam age the rubber part (black square) of the
C
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cap installed in the cap assem bly. (If it gets
dam aged, it w ill not be able to adhere closely to the
surface of the print head, and m ay cause a
m alfunction in operation.
When replacing the cleaner head built in the pum p
assem bly, be careful of the follow ing points.
- Do not touch the cleaner head w ith your bare
hands. Use gloves or tw eezers.
2. Remove the waste ink tank as described in “Rem oving the waste ink
pads” on pag e92.
3. Loosen two screws located on the edge of the paper eject frame assembly
and float release the joints for the paper eject assem bly and the side
fram es, as shown on the next page.
4. Raise the printer m echanism toward ASF side so that you can see the
bottom of the printer m echanism .
- Do not let oil or grease touch the head cleaner.
- When installing the cleaner head, set the rubber
side (black side) tow ard the right side of the fram e.
When installing the pum p assem bly, do not tighten
the screw m ore than necessary torque.
5. On the right side of fram e, rem ove the hook holding the cap assem bly
and release two protrusions attached to the fram e, lifting up the right side
of cap assembly, then take it out towards the bottom of the printer
page.)
6. Remove two screws (CBP 3x8) securing the pum p assembly to the frame.
(Refer to Figure 4-2 on the next page.)
Disassem bly & Assem bly
Rem oval of the Printer Consum ables
93
EPSON Stylus Scan 2500
Revision A
When reassem bling the cleaning assem bly, refer to the
figure below .
Since the spring is included am ong the gears in the pum p
assem bly, be careful that the parts do not pop out during
disassem bly and assem bly.
C
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C
K
P
O
I
N
T
When assem bling the printer, be careful not to crush nor
leave any stress on the ink tube connecting the pum p
assem bly and the cap assem bly.
After installing the pum p assem bly, m ake sure that the
cleaner parts m ove back and forth by rotating the gear
73.6.
Cleaner, Head
Gear arm
extension
Order of assem bling
the pump parts.
)
Disassem bly & Assem bly
Rem oval of the Printer Consum ables
94
EPSON Stylus Scan 2500
Revision A
Step 3. Loosen the screw s on
the right and left sides of the
paper eject frame assem bly.
Step 5. Release the hooks
from the right fram e
assem bly.
Pump Assem bly
Cap Assem bly
Step 7. Release the hook
from the back of the
printer mechanism and
pull out tw o protrusions
from the subframe.
Step 6. Rem ove
tw o CBP 3x8
screw s.
Figure 4-2. Rem oving the Cap and Pum p Assem blies
Disassem bly & Assem bly
Rem oval of the Printer Consum ables
95
EPSON Stylus Scan 2500
Revision A
Since the ink cartridge once taken out can not be
used again, be sure to install a new ink cartridge
w hen you return the printer to the user.
When you return the printer to the user, be sure to
pack the printer for transportation w ith a new ink
cartridge installed and the carriage in the hom e
position w hen the printer is turned on.
4.6 Disassem bling the Printer Mechanism
C
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This section explains procedures for disassembling the m ajor parts or units of
the printer m echanism .
4.6.1 Rem oving the Printhead Unit
1. Remove the upper cover as described in Section 4.3.
2. Remove the upper frame as described in “Removing the scanner support
fram e” on pag e84.
A
D
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When you replace the printhead unit, perform the
follow ing adjustm ents (Refer to Chapter 5 for m ore
details.):
1. Initial ink charge (Refer to Chapter 5/ Section 5.2.2.3)
2. Head Voltage ID Input (Refer to Chapter 5/ Section
5.2.2.7.)
3. Head Angular Adjustm ent (Refer to Chapter 5/
Section 5.2.2.8.)
4. Bi-D Adjustm ent (Chapter 5 / Section 5.2.2.9)
R
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3. Rotate the flat gear 73.6 towards yourself (front) to release the carriage
lock m echanism. Then m ove the carriage to the left edge .
4. Fully open the blue plastic cover for the black ink cartridge and squeeze
the bottom of the cover to release it from the ink cartridge holder. Turn it
slightly so the knob at the end of the cover releases from the carriage.
6. Remove the carriage FFC and FFC guide as shown in Figure 4-3 on the
next page.
8. Remove one screw (CBP 3x6) and twist the fastener to pull it out the hole
on the right side.
9. Remove the printhead from the carriage.
See the following pages for the figures below:
Figure 4-3, “Removing the Print Head”
Figure 4-4, “Installing the Printhead”
Make sure that the earth board is installed to the
carriage correctly. (There are 2 pins to determ ine the
location.)
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When you install the printhead to the carriage, m ake
sure that the location pin on the carriage side is
placed in the notch of the printhead.
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
96
EPSON Stylus Scan 2500
Revision A
Make sure that
this protrusion is
in the U ditch of
the print head
side.
This part should
be touching the
CR shaft receiver.
Step 6.
Fastener Head
Remove
the FFC
and FFC
guide.
Step 8.
Remove
one CBP
3x6 screw
and the
FFC
fastener.
Step 9. Remove
the printhead.
Make sure that
the protrusion of
the carriage fits
in this hole.
Printhead Unit
Carriage Assem bly
Step 7.
Remove the
tension spring
located here.
Note: There are no
actuators on the printhead.
Figure 4-3. Rem oving the Print Head
Nozzle Selector has been enclosed into head.
Figure 4-4. Installing the Printhead
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
97
EPSON Stylus Scan 2500
Revision A
4.6.2 Rem oving the PF Motor Assem bly
Gear 34
Spur gear
23.2
1. Remove the housing as described in “Removing the Housing” on
page 82.
Com bination
gear 16,40.8
2. Remove the waste ink tank. (Refer to Section 4.5.1.)
3. Remove the following gears located on the left side of the printer
mechanism.
Spur gear 26.4
Com bination gear 12.4, 28
Gear 36
Compression Spring 0.9
Gear 73.6
PRR Motor Assembly
Gear 73.6
Com bination Gear8, 14.4
Gear 73.6 is a precision gear and yet it is difficult to
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Hexagon Nuts
Gear 36
rem ove. Do not bend the gear and do not hold the gear
by its edges. Doing so m ay cause the gear paper feed
operation to be slightly off.
Rem ove the c-ring securing the gear w ith tw eezers or a (-
) driver, and gently pull the gear aw ay. Try to only touch
the knobs or edges on the inner or central part of the
gear.ve it w hile holding the w hole gear, slightly pulling it
tow ard you.
C-Ring
Com bination Spring 8.8, 21.8B102 MAIN
Figure 4-5. Rem oving the PF Motor Assem bly
4. Remove the circuit board tray as described in “Removal of the Circuit
Board Tray” on pag e90, and rem ove the PF m otor cable from connector
CN8.
NOTE: It m ay be a good idea to bring an extra gear with
you when perform ing on-site service.
5. Tilt the Stylus Scan so you can see the bottom and cut the plastic tie band
that secures the PF motor cable.
6. Remove 3 hexagon nuts with the M3 wrench on the left side fram e and
slide the PF motor pinion gear toward the front of the Stylus Scan where
you can remove it through the large hole.
When disassem bling the PF m otor assem bly, pull
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the m otor assem bly out of the fram e a little bit and
rem ove it, sliding it into a larger hole in the fram e.
(See Figure 4-5.)
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Be careful of the direction of the w ires from the PF
m otor assem bly.
Do not dam age or m ar the grooves in the gears
during the disassem bly and assem bly.
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
98
EPSON Stylus Scan 2500
Revision A
4.6.3 Rem oving the CR Motor Assem bly
(No.1)
1. Remove the housing. (Refer to Section 4.3)
2. Rotate the gear 73.6 toward you and release the carriage lock mechanism,
then m ove the carriage to the center.
3. Pull out the circuit board tray as described in “Removal of the Circuit
Board Tray” on pag e90, and disconnect the CR m otor cable from CN7.
4. Loosen the tim ing belt by pushing the driven pulley holder and rem ove
the tim ing belt from the pulley on the CR m otor.
5. Remove two screws (CBS 3x6) and remove the CR motor assembly.
After installing the CR m otor assem bly, m ake sure that
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tw o protrusions on the m otor bracket are aligned w ith
the location holes in the fram e. (Refer to Figure 4-7.)
Compression Spring 19.6
Driven Pulley Assem bly
Timing Bell
Make sure that protrusions of CR frame are in the holes of
frame w hen installing the CR m otor assem bly.
Figure 4-7. Rem oving and Installing the CR Motor Assem bly
To the Exterior
of Side Fram e
Driven Pulley
Holder
To the Interior of
Side Fram e
Figure 4-6. Rem oving the Tim ing Belt
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
99
EPSON Stylus Scan 2500
Revision A
4.6.4 Rem oving the ASF Assem bly
CR Shaft
Installation Screw
1. Remove the housing. (Refer to Section 4.3.)
2. Release the fixed hook from the inside of the printer mechanism and
remove the gear 34 from the roller shaft in the ASF assem bly.
CBS Sem s screw
w ith a Washer
Make sure that the
protrusion in the ASF
Assembly are in these holes
on the frame w hen installing
the ASF assem bly.
3. Remove the cables from the cable hook on the printer m echanism and the
hook on the ASF assem bly.
Gear 34
4. After rem oving 2 screws (one No.7 screw and one CR shaft installation
screw), remove the ASF assem bly, releasing the protrusion on the left
side of the ASF assem bly from the hole in the fram e.
5. With one hand m ove the paper depressor to the left and up, and with the
other hand remove the ASF assem bly, releasing the protrusion on the left
side of the ASF assem bly from the hole in the fram e.
When installing the ASF assem bly, m ake sure that
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the fram e and ASF assem bly are attached each other
w ithout any space betw een them .
Screw s for ASF assem bly should be used at the
follow ing positions. (Looking from the back of
printer)
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- Right:CR shaft installation screw
- Left:Screw No.7 (+Bind, S- tight, Sem s R2; w ith a
plain w asher)
Move the paper
depressor up and
out of the w ay.
ASF
protrusion
Figure 4-8. Rem oving the ASF Assem bly
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
100
EPSON Stylus Scan 2500
Revision A
4.6.4.1 Disassem bling the ASF Roller Assem bly
1. Remove the ASF assem bly. (Refer to Section 4.6.4.)
2. Remove the brake lever, releasing one leg of the torsion spring 41.2 from
the hook of the ASF fram e.
3. Remove the fixing shaft bushing from the right side of the LD roller shaft
and the release hopper lever.
4. Move the left paper feed assem bly to the center and remove the cam
fixing bushing (white plastic) attached to the left side of LD roller shaft.
5. Push the LD roller shaft to the left and remove the left shaft fixing bushing
after releasing its hook.
6. Remove the right and left sides of the hopper assem bly from the
protrusions on the ASF frame.
7. Lift up the right side of paper feed roller assem bly a little, m ove the LD
roller shaft to the right and rem ove it from the left side of the ASF fram e.
8. Holding the hopper assembly by hand, rem ove the cam part of hopper
assem bly from the right holes of ASF frame.
See the next section for details on disassem bling the paper-feed roller
assem blies.
During disassem bly and assem bly of the hopper
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assem bly, do not let the grease on the cam parts
touch other parts. Wipe off any grease sm eared on
other parts.
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Be careful of the direction of the hopper lever
release w hen installing it.
Make sure that the right and left fixing bushings are
installed steadily and do not slip off.
During assem bly, attach the cam fixing bushing
after installing the LD roller shaft to the ASF fram e.
When installing the right and left paper feed roller
assem blies to the LD roller shaft, the black paper
feed roller assem bly goes on the right side and the
one in the standard EPSON color goes on the left of
the shaft.
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
101
EPSON Stylus Scan 2500
Revision A
Hopper Assembly
Brake Leveer
Torsion Spring 41.2
Left Shaft
Fixing Bushing
ASF Fram e
Release Hopper Lever
(EPSON standard color)
Paper Feed Roller Assembly
Shaft Fixing
Bushing
(Black)
LD Roller Shaft
Figure 4-9. Disassem bly of ASF Assem bly
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
102
EPSON Stylus Scan 2500
Revision A
4.6.4.2 Rem oving the Right and Left LD Roller Assem bly
1. Disassemble the ASF assem bly and rem ove the paper feed roller
assem bly and hopper assem bly from the ASF assem bly. (Refer to Section
4.6.4.)
LD Roller Cover
(Right and Left)
+
Paper Feed Holder
Sheet
Compression Spring 1.66
2. Take out the right and left com pression springs 1.66 from the back of the
hopper assem bly.
3. Pull out the cam part of the hopper assem bly from the hole located on the
fram e of the right LD roller assem bly,
4. Pull out the LD roller shaft. The paper feed roller assem bly and hopper
assem bly should be disconnected by now.
roller assem bly. Also, release the fixed hook of the cover roller LD and
remove the LD roller assem bly.
LD Roller Assem bly
(Right and Left)
When installing the LD roller assem bly, m ake sure
that the hooks are hung on the paper feed
assem bly.
Paper Feed Assembly
(Right and Left)
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During assem bly, w hen setting the com pression
spring 1.66 to the spring installation position in the
paper feed assem bly, hang the spring on the hook
tem porarily. Also, do not forget to release the hooks
of these springs from the holes located on the back
of paper feed assem bly by rotating the spring. (Refer
to the figure below .)
During assembly, set the compression spring
1.66 in the position for spring installation of the
paper feed assem bly and hang the bent part of
the spring on the hook.
Figure 4-10. Disassem bly of Paper Feed Roller Assem bly
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
103
EPSON Stylus Scan 2500
Revision A
4.6.5 Rem oving the Carriage Assem bly
PG Lever
Right
1. Remove the housing. (Refer to Section 4.3)
parallelism
bushing
2. Push in the driven pulley holder and rem ove the tim ing belt from the
pulley on the CR m otor side. (See Figure 4-6 on p age99.)
Insert this side
to the hole on
the right fram e.
To the PG
Lever
Remove
one
screw
3. Take the compression spring 19.6 out of the driven pulley holder.
4. Remove the driven pulley assem bly from the driven pulley holder with
the tim ing belt. Slide the driven pulley holder and rem ove it from the
fram e.
5. Remove the 63.7 torsion spring between the fram e and PG lever. Release
the fixed hook of the PG lever from the PG support lever and rem ove the
PG lever.
Torsion Spring 63.7
Elliptic Holes
PG Support Lever
6. Release the fixed hook of the PG lever support from the right parallelism
bushing and remove the PG lever support and washer. (Refer to the figure
next page.)
Figure 4-11. Installing the PG Lever
7. Remove one screw (CBS Sem s R2 3x6) and rotate the right parallelism
adjustment bushing so that it fits in the notch of the fram e, and rem ove it.
8. Remove the CR assem bly with the CR guide shaft.
When disassem bling the right parallelism
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the bushing is fixed on the fram e so that you can
om it gap adjustm ent after assem bly.
When installing the w asher, pay attention to its
direction. (Convex side should face the right
parallelism adjustm ent bushing side.) Refer to the
figure below .
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When installing the PG lever, refer to the figure
below .
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
104
EPSON Stylus Scan 2500
Revision A
Carrige Assembly
Left Parallelism
Adjustment Bushing
CR Guide Shaft
Right Parallelism Ajustm ent Bushing
PG Support Lever
Washer
[Convex side should face to the bushing side during installation]
Figure 4-12. Rem oving the Carriage Assem bly
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
105
EPSON Stylus Scan 2500
Revision A
4.6.6 Rem oving the PF Roller Assem bly
1. Remove the housing. (Refer to Section 4.3.)
Upper Paper
Guide Assembly
Left Paper Guide
(CBS 3x6)
Upper Paper
Guide Shaft
2. Remove the carriage assem bly. (Refer to Section 4.6.5.)
3. Remove three screws (CBS 3x6) on the printer m echanism and
disassem ble the cable guide board.
(6 positions)
4. Remove six upper paper guide assem blies, releasing their springs from
the hooks in the frame.
Cable Guide Board
5. Remove the front paper guide ;B, releasing the hooks. (Refer to next
page.)
6. Remove the paper eject roller assembly, releasing the fixed locks located
on the right and left edges of the shaft.
Torsion Spring
117.5
7. Release the fixed hook located on the left side of the PF roller assem bly
shaft and rotate it so that the protrusion on the shaft (white) and hole for
receiving the shaft in the frame align.
8. Slide the PF roller assembly to the right and pull it out.
During disassem bly and assem bly of the upper
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paper guide assem blies, since one of the upper
paper guide assem blies to be installed on the right
side overlaps w ith the PE detector lever, pay
attention not to dam age the lever.
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(CBS 3x6)
Be careful not to dam age the hook during
disassem bly and assem bly of the front paper guide
;B.
Be careful not to scratch the PF roller assem bly
during disassem bly and assem bly, since its surface
is specially coated to im prove paper feeding. (black
part)
Figure 4-13. Rem oving the Paper Guide Assem bly
Be careful not to dam age the com bination gears.
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
106
EPSON Stylus Scan 2500
Revision A
Align the protrusion in the PF roller assembly
w ith the hole in the fram e for holding the shaft.
Front Paper Guide; B
Eject Paper
Roller
Assem bly
PF Roller Assembly
Figure 4-15. Rem oving the PF Roller Assem bly
Figure 4-14. Rem oving the Paper Eject Roller Assem bly
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
107
EPSON Stylus Scan 2500
Revision A
4.6.7 Rem oving the PE Paper Detector Assem bly
After releasing tw o hooks, rem ove
the PF paper detector assmebly,
sliding it upw ard.
1. Remove the housing. (Refer to Section 4.3.)
(From back side of
the fram e)
2. Release two fixed hooks securing the PE detector assem bly from the back
of the fram e and rem ove the PE detector assem bly, sliding it upward.
Remove the PE board assem bly and PE lever, if necessary.
During assem bly, m ake sure that the tip (sensor part) of
the detector lever is in the hole of paper guide assem bly.
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PE Holder
This side should
be installed on the
frame.
PE Board Assembly
PE Lever
Torsion Spring 0.22
Figure 4-16. Rem oving the PE Detector Assem bly
Disassem bly & Assem bly
Disassem bling the Printer Mechanism
108
EPSON Stylus Scan 2500
Revision A
4.6.8 Rem oving the HP Detector
4.7 Disassem bly of the Scanner Mechanism
1. Remove the housing. (Refer to Section 4.3.)
You only need to rem ove the scanner from the scanner support fram e when
servicing the scanner mechanism .
2. Remove the cable from the HP detector and take it out after releasing the
fixed hook.
HP Detector
Figure 4-17. Rem oving the HP Detector
Disassem bly & Assem bly
Disassem bly of the Scanner Mechanism
109
EPSON Stylus Scan 2500
Revision A
4.7.1.1 Rem oving the lam p
4.7.1 Rem oving the scanner
You do not have to rem ove the scanner m echanism to replace the lam p.
You only need to remove the scanner from the scanner support fram e when
replacing the scanner mechanism. You do not need to rem ove the scanner
1. Remove the rear cover and top cover as described in “Rem oving the
Housing” on page 82.
The printer m echanism
The circuit boards
2. Remove two black screws (CBP 3x8 with flange) securing the scanner
cover.
Any m otors
Lift
here.
Scanner parts such as the glass and lam p.
Lift
here.
To rem ove the scanner, see the following.
1. Remove the rear cover and top cover as described in “Removing the
Housing” on pag e82.
2. Pull out the circuit board tray as described in “Removal of the Circuit
Board Tray” on pag e90.
Remove tw o screw s.
3. Disconnect the scanner FFC (CN14).
4. Remove two screws (CBS 3x6) securing the tension spring and base and
unhook one end of the tension spring.
5. Remove the CR belt by pushing in the tension spring end and rotating the
belt while pulling it laterally away from the driven pulley.
3. Lift the cover by the sides.
4. Remove one connector from CN2.
6. Flip the scanner over so that it is upside down and resting on the ASF.
Use pliers to rem ove the CR belt clamp.
7. Slide the scanner CR guide shaft out of the bracket and slide the scanner
off the free end of the CR guide shaft.
Disassem bly & Assem bly
Disassem bly of the Scanner Mechanism
110
EPSON Stylus Scan 2500
Revision A
4.7.1.2 Rem oving the scanner pow er supply board
1. Remove the scanner cover and lamp as described above.
2. Remove one screw (CBP 3x8 with flange).
3. Remove one connector CN1.
4.7.1.3 Rem oving the scanner assem bly from the scanner
guide shaft
1. Using pliers, rem ove one spring..
3) Rem ove the FFC.
4. Remove the power supply board.
1) Remove
spring here.
5) Slide the left
carriage guide frame
to the right to
release the belt.
4) Remove
carriage belt clip.
2) Rem ove tw o
screw s.
2. Remove two screws (CBS 3x6).
3. Turn the scanner vertical and remove the FFC.
4. Using pliers, rem ove the carriage belt clip.
5. Slide the left carriage guide frame slightly to the right.
6. While rotating the belt around the pulley, rem ove the belt from the driven
pulley.
7. While supporting the scanner with one hand, slide the left carriage guide
frame to the left until the carriage guide shaft com es free.
8. Slide the scanner assembly off the carriage guide shaft.
Disassem bly & Assem bly
Disassem bly of the Scanner Mechanism
111
EPSON Stylus Scan 2500
Revision A
4.7.2 Rem oving the scanner m otor
1. Remove the rear cover and top cover as described in “Removing the
Housing” on pag e82.
2. Pull out the circuit board tray as described in “Removal of the Circuit
Board Tray” on pag e90.
3. Disconnect the scanner m otor cable (CN13).
Using a 3M wrench, rem ove two nuts securing the m otor.
When installing the scanner m otor, it is a good idea to
rem ove the spring and loosen the left scanner guide
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fram e as described in Section 4.7.1.3 above.
Disassem bly & Assem bly
Disassem bly of the Scanner Mechanism
112
EPSON Stylus Scan 2500
Revision A
The scanner m echanism requires no adjustm ent for any service operation
provided you closely follow the specifications in this m anual and the
instructions in Chapter 4 “Disassem bly and Assem bly”.
Table 5-2. List of Required Adjustm ents
No.
1
Adjustm ent Item
Conditions
When you replace or rem ove the carriage or
carriage guide shaft.
5.1 Required Adjustm ents
Parallelism Adjustm ent
Initial Ink Charge
When you m ove the parallelism adjustm ent
bushing.
The Stylus Scan printer mechanism requires the adjustm ents shown in Table
5-1. Perform the necessary adjustm ent referring to the steps and figures
described throughout this chapter. Table 5-2 provides a list of necessary
adjustments and the conditions when they are required.
When you replace or rem ove the printhead.
2
When you replace the printhead.
When you replace the m ain board.
3
Head Voltage ID Input
Note) The values stored in this address are not
Table 5-1. List of Service Procedures That Require Adjustm ent
erased by the EEPROM reset operation.
When you replace or rem ove the printhead.
No.
Content of Operation
Adjustm ent Procedure
When you m ove the printhead angle-adjust
lever.
1. Perform Vh voltage writing
operation.
Printhead Angle
Adjustm ent
4
When you replace or rem ove the carriage or
carriage guide shaft.
2. Perform initial ink charge.
3. Perform printhead angle adjustm ent.
4. Perform Bi-d Adjustm ent.
5. Reset ink counter.
1
Replacem ent of the printhead
When you replace or rem ove the printhead.
When you replace the m ain board.
When you replace the CR Motor.
5
6
Bi-D Adjustm ent
Reset ink counter.
1. Perform Vh voltage writing
operation.
When you replace or rem ove the carriage or
carriage guide shaft.
2
3
Replacem ent of the m ain board
2. Perform Bi-d adjustm ent.
1. Perform parallel adjustm ent.
2. Perform printhead angle adjustm ent.
3. Perform Bi-d adjustm ent.
4. Reset ink counter.
When you replace the printhead.
When you replace or rem ove the carriage or
carriage guide shaft.
Carriage Unit
Table below shows the actions taken and required adjustm ents in the order to
be performed.
1. Perform Bi-d adjustm ent.
4
5
Replace of the CR Motor
1. Perform Head Voltage ID Input.
2. Perform initial ink charge.
3. Perform Bi-d adjustm ent.
Replacem ent of the Printer
Mechanism
Adjustm ent
Required Adjustm ents
113
EPSON Stylus Scan 2500
Revision A
5.1.1 Adjustm ent Tools Required
5.2 Printer Adjustm ent
Table 5-3 below shows necessary adjustm ent tools.
This section explains detailed adjustm ent procedures for the printer
m echanism such as parallelism adjustm ent and using the adjustm ent
program to enter market and Head ID information (see page 124).
Table 5-3. Adjustm ent Tools Required
No.
Nam e
Adjustm ent Item
Parallelism Adjustm ent 1.04 m m
Program for Production;
P00A10W
Contents/ Spec.
NOTE: The adjustm ent program for the Stylus Scan is not an
exclusive service program ; it is actually the production
program used at the factory during assem bly. However, for
the purposes of the this m anual, it will be called the
adjustm ent program except when refering to the Sm art m enu
icon.
1
Thickness Gauge
Adjustm ent
Program
2
Mechanism Settings
Never use a bent (curved or tilted) or rusty thickness
gauge.
Rem ove any dirt, grease or obstacles on the thickness
gauge before you use it.
The following section describes the physical adjustments that must be
performed. See “Using the Service-Adjustment Program” on page 116 for
details on adjustments performed using the adjustm ent program .
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5.2.1 Printer hardw are adjustm ents
5.2.1.1 Parallelism Adjustm ent
When replacing the carriage assem bly or rem oving it during printer
m echanism disassem bly, perform the parallelism adjustm ent during re-
assembling and set the standard distance from the surface of the printhead to
the paper surface.
Do not scratch the special coated surface of the PF roller
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assem bly or the ribbed surface of the front paper guide; B.
Be careful not to scratch or leave anything such as dirt on
the surface of the printhead. (Never use a rusty or dirty
thickness gauge. Also, do not push the thickness gauge
hard against the head.)
[RIGHT PARALLELISM ADJ USTMENT]
1. Install the "parallelism adjustm ent bushing” for right and left fram e
and set them on the peaking of the upper fram e side so that they
m atch with “the standard m ark of parallelism adjustm ent bushing".
2. Make sure the PG lever is pulled forward (sm all gap position).
Adjustm ent
Printer Adjustm ent
114
EPSON Stylus Scan 2500
Revision A
3. Move the carriage to the center and set the thickness gauge on the
fixed position of the front paper guide; B as shown in Figure 5-1 on
the next page.
[FIXING PARALLELISM ADJ USTMENT BUSHING]
13. Fix the right and left parallelism adjustm ent bushings with screws.
(one screw for each.)
4. Move the carriage so that the printhead overlaps the thickness gauge.
When completing this adjustm ent, check the overlap am ount of the printhead
and head cleaner.
Put the thickness gauge on the flat side of a ribbed
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section of the front paper guide; B.
To m ove the carriage, pull the tim ing belt w ith your hand.
1. Rotate the gear 73.6 and m ove the head cleaner to the printer rear
side.
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2. Move the carriage next to the head cleaner and m ake sure that
overlap between the tip of the printhead and cleaner head is m ore
than 0.5 m m .
5. Move the right parallelism adjustm ent bushing to the rear until the
thickness gauge m oves with the carriage when you m ove the carriage
about 20 m m right and left (the gap will narrow).
3. Then, rotate the gear 73.6 and return the head cleaner to the front
position.
Right,
HP side
Front Paper Guide; B
carriage, m ove the gear of the right parallelism adjustm ent bushing
one notch toward you (the gap will widen)
7. With the PG lever pulled forward (gap is sm all), m ove the carriage
right and left to m ake sure that the thickness gauge does not m ove.
[LEFT PARALLELISM ADJ USTMENT]
Avoid the last
rib on right
side
Avoid last tw o
ribs on left side
Thickness
gauge
8. Perform Steps 2 to 7 for the left parallelism adjustm ent bushing.
Carriage
assembly
Put the gauge on a flat
surface, and then align
the center of the gauge
w ith the ribs.
[CHECKING PARALLELISM]
9. Perform steps 1 to 4 again.
10. Make sure that the thickness gauge does not m ove right and left along
with the carriage when the carriage is m oved about 20 m m .
Front Paper Guide; B
Roller, Assembly, PF
11. Move the right parallelism adjustm ent bushing one notch to the rear
(the gap will narrow).Then check that the thickness gauge m oves
along with the carriage. If the thickness gauge does not m ove, go back
to Step 1 and repeat the adjustm ent.
Figure 5-1. Setting the Parallelism -Adjustm ent Gauge
12. If the gap is adjusted correctly, m ove the right parallelism adjustm ent
bushing one notch toward you (the gap will widen).
Adjustm ent
Printer Adjustm ent
115
EPSON Stylus Scan 2500
Revision A
5.3 Using the Service-Adjustm ent Program
Position m ark
For the Stylus Scan, instead of an exclusive service-adjustm ent program , you
need to use the production program when perform ing certain service
operations.
Forw ard =
Gap w idens
Backw ard =
Gap narrow s
This program is necessary to eliminate any malfunction or fluctuation
between individual printer mechanisms and printer parts. Therefore, any time
you replace the printer m echanism, printhead, or main board you need to
enter the correct information in the main board using this production
program.
+ side
Side fram e
- side
5.3.1 Installing the program
1. Insert the floppy disk in the "A" drive and open the "A" drive folder
from My Com puter or the Explorer.
Right parallelism
adjustment
bushing
2. Click the program icon for the Adjustm ent program .
PG lever
NOTE: The program nam e varies according to m odel and program
version. At the tim e of the publication, SS 2000 = N90B01W
and SS2500 = P00B01W
3. Select an installation folder and click OK.
Figure 5-2. Parallelism Adjustm ent
Overlap =
0.5mm or
more
Printhead nozzle
surface
Cleaner blade
Figure 5-3. Overlap of Head Surface and Cleaner Blade
Adjustm ent
Using the Service-Adjustm ent Program
116
Revision A
5.3.2 Openning the Start-up m enu
Table 5-4. Softw are-based Adjustm ent Procedures
1. Connect the printer and PC and turn on the printer.
Adjustm ent procedure
See
Then see
2. From the Start m enu, select Program s>Program for
Production>P00B01W The following screen appears.
“Head ID Menu” on “Head Voltage ID Input” on
Input the head voltage
page 117
page 124
“Initial Ink Charge Operation”
on pag e122
Charge ink
“Bi-D Adjustm ent” on
page 122
Adjust norm al Bi-d
Adjust variable Bi-d
Clean the printhead
“Production Menu”
on page 120
“Head Cleaning Operation”
on pag e123
Drain ink
“Ink draining” on pag e126
Reset EEPROM
Clear ink counter
Special
The following table gives a list of adjustment that are available on the service-
related m enus. Other m enus and item s are for production purposes only.
Table 5-5. Service Menu Item s
Menu nam e
Head ID Menu
Operations available
Input Head ID
Input the head voltage
Charge ink
Figure 5-4. Inital Menu
Adjust norm al Bi-d
Adjust variable Bi-d
Clean the printhead
Drain ink
Production Menu
From the Startup m enu you need to choose Head ID or Production depending
on the adjustm ent procedure you perform . See the table below for details.
Reset EEPROM
Special
Clear ink counter
HEAD ID MENU
To enter the Head ID menu, follow these steps.
Adjustm ent
Using the Service-Adjustm ent Program
117
EPSON Stylus Scan 2500
Revision A
1. Open the Start-up m enu as described above.
2. Select Head ID and click OK. The following m enu appears.
Only select Print Head ID in the Head ID m enu. All other
options are for factory use only.
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Adjustm ent
Using the Service-Adjustm ent Program
118
EPSON Stylus Scan 2500
Revision A
Figure 5-5. Head ID Menu
Adjustm ent
Using the Service-Adjustm ent Program
119
EPSON Stylus Scan 2500
Revision A
4. Click Next again.
PRODUCTION MENU
To enter the Production m enu, follow these steps.
1. Open the Start-up m enu as described above.
2. Select Production and click OK.
3. Make sure CT (cartridge) is selected in the first Configuration window
and then click Next.
5. Click FINISH.
Do not select J IG in the Configuration w indow as this
option is for factory use only.
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6. The Production Menu appears, as shown on the next page. See the
following pages for details on perform ing service-related
adjustm ents.
Adjustm ent
Using the Service-Adjustm ent Program
120
EPSON Stylus Scan 2500
Revision A
5.3.3 Initial Ink Charge Operation
5.3.4 Bi-D Adjustm ent
There is no ink in the ink path of a spare printhead and printer m echanism
when first installed; therefore, after replacing either of these two parts, you
need to perform an initial ink charge.
You perform this adjustm ent to correct differences in printing positions,
which is caused by slippage of printing tim ing in right and left directions
during the Bi-directional printing. Therefore, you need to perform this
adjustment after performing the following operations.
1. Enter the Production m enu as described in “Using the Service-
Adjustm ent Program ” on pag e116.
Replacing the printer mechanism
Replacing the main board
Replacing the CR motor
2. On the Production m enu (Figure 5-6), select Ink Charge. Then click OK
in the dialog box that appears.
Replacing the Carriage Assembly
Replacing the Printhead
It takes approxim ately 90 seconds for the ink charge
operation to com plete.
1. Enter the Production m enu as described in “Using the Service-
Adjustm ent Program ” on page 116.
2. On the Production m enu (Figure 5-6), select Bi-d Adj. - Norm al. The Bi-
d Adjust dialog box appears.
3. Click OK in the dialog box that appears to print adjustm ent patterns
with the current settings.
Adjustm ent
Using the Service-Adjustm ent Program
122
EPSON Stylus Scan 2500
Revision A
5.3.5 Head Cleaning Operation
Variable/ Norm al Bi-d = - n
Unlike many previous models, the Stylus Scan does not have a dum m y
cleaning sequence called CL3, which was performed to prevent ink from
being unnecessarily consum ed when cleaning was repeated without any
printout. However, Stylus Scan is alternatively equipped with the strongest
cleaning sequence CL2 contained in this adjustment program. With this
sequence, you can forcibly solve the clogged-nozzle problem s that were
caused by viscous ink.
Left
gap
If you cannot recover the clogged nozzles even after
perform ing the CL2 operation, enter the Initial ink charge
sequence by referring to “Initial Ink Charge Operation” on
page 122.
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Variable/ Normal Bi-d = 0
1. Enter the Production m enu as described in “Using the Service-
Adjustm ent Program ” on page 116.
Right
gap
2. On the Production m enu (Figure 5-6), select Cleaning. Then click OK
in the dialog box that appears.
3. The printer enters the CL2 sequence.
Variable Bi-d = n
The CL2 cleaning operation takes 60 seconds to com plete.
Figure 5-7. Bi-D ADjustm ent Pattern Sam ple
4. Looking at the printed patterns, determ ine which set is vertically
aligned. Enter the num ber of that set in the Bi-d Adjust dialog box. If
no patterns are vertically aligned, entered the num ber of the pattern
that is m ost aligned.
Repeat this process until the lines are aligned, and then enter "y" in
the Current Value field.
Adjustm ent
Using the Service-Adjustm ent Program
123
EPSON Stylus Scan 2500
Revision A
5.3.6 Head Voltage ID Input
5.3.7 Head Angular Adjustm ent
Head voltage value adjustm ent function enables you to write printhead ID.
This operation is considered the m ost im portant to maintain proper ink
discharging system . If an ID is not written correctly, it results in white or color
lines and also cause wrong dot-weight errors. This adjustment is required in
the following cases.
During production, slight variations are created in printheads and carriage
(which are used as a printhead base.) The head angular adjustm ent
procedures com pensates for these differences so that no banding or color/
white line patterns appear in the printout.
To adjust the printhead angle correctly, an exclusive lever for adjusting the
printhead angle is installed on the side of the carriage unit. By m oving this
lever, you are able to adjust the printhead angle without rem oving the ink
cartridge.
1. When exchanging the m ain board
2. When exchanging the printhead
3. When exchanging the printer mechanism
This adjustment is required in the following cases.
When a printhead is replaced.
When perform ing this operation, also see Table 5-4 on
necessary.
When the carriage unit is replaced.
When the angle adjustment lever is moved.
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Print the check pattern in the adjustm ent program to determ ine the angle
degree needed for the printhead. Then m ove the adjustment lever in the
carriage unit to set the printhead angle referring to the printed check pattern.
1. When replacing any of the parts above, m ake a note of VH voltage ID.
You can find the VH voltage ID on the following position:
Printhead:
On the top side of the printhead.
Before or after perform ing this operation, refer to Table 5-2
and perform appropriate adjustm ents or operations.
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Printer mechanism:
On the label of the packing box of the
printer mechanism.
1. Enter the Head ID m enu as described in “Using the Service-
Adjustm ent Program ” on pag e116.
2. On the Production m enu (Figure 5-6), select Head ID. Then click OK in
1. Rem ove the upper case from the m ain unit. (Refer to Chapter 4.)
the dialog box that appears.
2. Enter the Production m enu as described in “Using the Service-
Adjustm ent Program ” on page 116.
3. From the Head ID m enu, select Print Head ID to verify the voltage
inform ation is enabled.
3. On the Production m enu (Figure 5-6), select Print - Angular Adj. The
follow ing patterns are printed.
Adjustm ent
Using the Service-Adjustm ent Program
124
EPSON Stylus Scan 2500
Revision A
NOTE: Make sure to loosen this screw. Otherwise, the printhead
angle will not change even if the adjustm ent lever m oves.
5. Look very closely at the black/m agenta lines in the bottom pattern and
m ove the adjustm ent lever to center the m agenta lines between the
black lines. The figure below shows how to m ove the lever to correct
a m isaligned pattern.
To move this dow n
Correct condition = vertical
spacing is even
Figure 5-8. Sam ple of Head Angular Adjustm ent Pattern
NOTE: In the above figure, Head Katam uki m eans Head Angle.
Move the lever
to the rear
4. Loosen the screw securing the printhead on the carriage. (You don't
need to rem ove it com pletely.)
To m ove this up
Printhead
securing screw
Move the lever
to the front
Adjustment lever
Figure 5-10. Lever Operation
6. After changing the position of the adjust lever, select Print - Angular
Adj. again from the Production Menu.
7. Verify the pattern on the printout again.
8. Repeat this process until the com bination pattern of black/m agenta is
correct.
Figure 5-9. Screw Position
Adjustm ent
Using the Service-Adjustm ent Program
125
EPSON Stylus Scan 2500
Revision A
9. After com pleting the adjustm ent, tighten the printhead screw, and
reassem ble the Stylus Scan.
5.4 Scanner Adjustm ent
The scanner mechanism requires no adjustment for any service operation
provided you closely follow the specifications in this m anual and the
instructions in Chapter 4 “Disassem bly and Assem bly”.
5.3.8 Ink draining
To drain the ink from the cartridge before transporting it a long distance,
follow the steps below.
1. Enter the Production m enu as described in “Using the Service-
Adjustm ent Program ” on pag e116.
2. On the Production m enu (Figure 5-6), select Ink Discharge. Click OK in
the follow ing dialog box.
SPECIAL MENU
To enter the Special m enu, follow these steps.
2. Double-click Special and click OK.
3. Double-click Counter Clear and clice OK.
You can also perform a hex dum p of the EEPROM data by
double-clicking EEPROM DUMP on the Special m enu. The
printer w ill print the EEPROM param eters in hexadecim al
characters.
Adjustm ent
Scanner Adjustm ent
126
EPSON Stylus Scan 2500
Revision A
6.1 Overview
Table 6-2. Lubrication Points
Figure
6-1
Lubrication Points
Lubrication
This chapter provides inform ation necessary to keep the scanner function in
optim um condition constantly and to prevent troubles.
Transm ission Gear Shaft of the CR m otor and
Driven pulley shaft.
G-26 (1x3m m )
G-26(1x3m m )
6.1.1 Cleaning
6-1
Driven Pulley Shaft
Perform cleaning when stain is noticeable. Stain on the docum ent glass,
particularly, has direct effect on the scanned image. Therefore, be sure to
clean the glass well to rem ove stain thoroughly.
Excessive lubrication m ay dam age the m echanism part or
cause the malfunction of the operation.
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Never apply any organic solvent such as thiner and benzine,
since there may dam age deteriorate plastic and rubber parts.
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6.1.2.2 Printer lubrication points
The type and am ount of oil and grease used to lubricated the printer parts are
determined based on the results of internal evaluations. Therefore, be sure to
apply the specified type and am ount of oil and grease to the specified part of
the printer mechanism during servicing.
Outer Cases
Wipe stain off with a clean cloth which is m oisted with water and then
squeezed tightly. To rem ove sever stain, use neutral detergent.
Docum ent Glass
Never use oil or grease other than those specified in this
m anual. Use of different types of lubricant can dam age the
printer and the com ponents.
Never apply a larger am ount of lubricant than specified in
this m anual.
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Rem ove dust and paper debris with a dry clean cloth. If stain is severe
or foreign object is stuck, use a cloth absorbed with neutral detergent.
If trace is left, wipe it off well with a dry, clean cloth again.
6.1.2 Lubrication
Table 6-3. Specified Lubricants
6.1.2.1 Scanner lubrication points
Type
Grease
Oil
Nam e
G-26
O-12
EPSON Code
B702600001
1038991
Supplier
EPSON
EPSON
When the carriage unit needs to be replaced, or the operation sound of the
carriage m ovement becomes noisy, it is necessary to apply lubrication.
Following tables show the recomm ended grease type and lubrication points.
Table 6-1. Recom m ended Grease
Supply
Quantity
Type
Nam e
Part No.
Specification
Grease
G-26
40g
B702600001
E*
Note*) “E” m eans exclusive product for EPSON. (Not available on the m arket)
Maintenance
Overview
129
EPSON Stylus Scan 2500
Revision A
Table 6-4. Lubrication Points (cont.)
Table 6-4. Lubrication Point s
See
pag
e
See
pag
e
No.
Standard
Rem arks
No.
Standard
Rem arks
<Lubrication Point>
Gears:
<Lubrication Point>
Do not put grease around the
paper path.
Contact between “ROLLER, PF”
and “PAPER GUIDE, REAR”
“GEAR, 73.6”
“COMBINATION GEAR, 8, 14.4”
“GEAR, 23.2”
1
Use a syringe to apply it.
132
<Lubricant Type> G-26
Apply grease while rotating
“GEAR, 73.6”.
Rotate the gears after applying
grease to evenly distribute it.
<Lubrication Am ount>
4
<Lubricant Type> G-26
133
Use a syringe to apply it.
<Lubrication Am ount>
1/4 of gear tooth
1/3 of gear tooth
1/3 of gear tooth
1/3 of gear tooth
<Lubrication Point>
Contact points between “PAPER
GUIDE, FRONT” and each roller:
Lubricate the contact points
between the hooks on “PAPER
GUIDE, FRONT” and each roller.
“ROLLER, PF” (1 point)
“ROLLER, EXIT” (2 points)
2
132
Avoid applying grease around the
paper path.
<Lubrication Point>
<Lubricant Type> G-26
The shaft for “GEAR, 16, 40.8” on
“FRAME, LEFT”
Use a syringe to apply it.
<Lubrication Am ount>
10-m m long
5
Use a syringe to apply it.
133
<Lubricant Type> G-26
2-m m long
<Lubrication Am ount>
<Lubrication Point>
Approxim ately 5-m m long
Contact points between the
carriage assem bly and “FRAME,
UPPER”
<Lubrication Point>
Bushings for “ROLLER, PF”
Left: Inside the bushing
For the right bushing, apply it
from the paper path side, and
wipe off any grease sticking out to
the cap assem bly side.
Verify that the carriage m oves
sm oothly after lubricating it.
<Lubricant Type> G-26
<Lubrication Am ount>
3
133
Right: Inside the bushing (near
the pum p assem bly)
Use a syringe to apply it.
6
134
Rotate “ROLLER, PF” after
applying grease to evenly
distribute it in the bushing.
Range from the HP sensor
installation point to the point
where “GUIDE PLATE, CABLE” is
attached.
<Lubricant Type> G-26
<Lubrication Am ount>
Use a syringe to apply it.
Approxim ately 3 m m
diam etrically
Maintenance
Overview
130
EPSON Stylus Scan 2500
Revision A
Table 6-4. Lubrication Points (cont.)
Table 6-4. Lubrication Points (cont.)
See
pag
e
See
pag
e
No.
Standard
Rem arks
No.
Standard
Rem arks
<Lubrication Point>
<Lubrication Point>
Both Left/Right Bushings for
“ROLLER, EXIT”
The round cutout in the left fram e
of ASF (“GEAR, 34” is inserted to
the cutout.)
Avoid applying grease around the
paper path.
Com pletely wipe off any grease
sticking out to the inner side of
ASF.
7
134
<Lubricant Type> G-26
11
136
Use a syringe to apply it.
<Lubricant Type> G-26
<Lubrication Am ount>
<Lubrication Am ount>
Evenly apply inside the hole
<Lubrication Point>
<Lubrication Point>
Oil pad in the carriage assem bly
Lubricate the oil pad only when:
Replacing the carriage assembly
Replacing the oil pad
Contact points between
“HOLDER, PULLEY, DRIVEN” and
“FRAME, UPPER”
Verify that the holder slides only
with spring force after applying
grease.
<Lubricant Type> O-12
8
135
Use a precise syringe to apply oil.
If you accidentally apply too m uch
oil to the oil pad, throw the pad
away and take a new one again.
<Lubricant Type> G-26
<Lubrication Am ount>
0.72 ~ 0.77cc (0.65 ~ 0.69g)
Use a syringe to apply it.
12
136
<Lubrication Am ount>
2-m m long for each point
Note:
Leave the pad for a while to wait
until oil is evenly infiltrated, then
install it on the carriage assem bly.
<Lubrication Point>
ASF;
This is the am ount to be applied
to a new oil pad.
The round hole in the right fram e
of ASF (to hold the roller shaft)
Avoid applying grease to
“ROLLER, ASSEMBLY, LD”.
9
135
<Lubricant Type> G-26
<Lubrication Am ount>
Evenly apply inside the hole.
<Lubrication Point>
ASF;
Contact points between
“HOPPER” and “LEVER, HOPPER,
RELEASE”
Com pletely wipe off any grease
sticking out to the inner side of
ASF.
10
135
<Lubricant Type> G-26
<Lubrication Am ount>
Evenly apply lubrication to the
points.
Maintenance
Overview
131
EPSON Stylus Scan 2500
Revision A
PAPER GUIDE, FRONT
G-26
G-26
ROLLER, PF UNIT
Figure 6-2. #2 Front Paper Guide - A
G-26
ROLLER, PF
Figure 6-1. #1 Paper Feed Roller at tw o places
G-26
When rotating the Paper Feed Roller, only touch the
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projections on the outside surface of the 73.6 precision
gear. Do not touch the teeth of the gear.
Figure 6-3. #2 Front Paper Guide - B
Maintenance
Overview
132
EPSON Stylus Scan 2500
Revision A
No. 5
G-26
No. 4
"GEAR, 23.2"
"GEAR, 16,
40.8"
No.4
"GEAR, 73.6"
Figure 6-4. #2 Front Paper Guide - C
No.4
"COMBINATION
GEAR,8 14.4"
Screw
Indent
G-26
Figure 6-6. #4 Com bination Gears and #5 Gear Shaft
270 m m (betw een the screw and
Figure 6-5. #3 Carriage Assem bly Contact Point
Maintenance
Overview
133
EPSON Stylus Scan 2500
Revision A
BUSHING, 12, RIGHT
G-26
Roller, Exit
G-26
Figure 6-7. #6 Inside the PF Roller Bushing - Right
G-26
G-26
BUSHING, 6
(Tw o
pieces)
BUSHING, 12, LEFT
Figure 6-9. #7 Left & Right Exit Roller Bushings
Figure 6-8. #6 Inside the PF Roller Bushing - Left
Maintenance
Overview
134
EPSON Stylus Scan 2500
Revision A
*Never apply the oil exceeding 0.6cc.
Lubricate this area
Do not lubricate
these hooks.
G-26
Oil pad
Lubricated side
Spur Gear, 27.2
faces out.
Carriage Assembly
(bottom view )
Figure 6-13. #11 Gear 34 (ASF Roller Gear)
"SHAFT.CR.GUIDE"
Figure 6-14. #12 Carriage Assem bly Oil Pa d
Never apply oil to the CR guide shaft directly. This m ay
cause fatal dam age to the com ponents of the printer.
Avoid applying oil excessively to the oil pad. This m ay
cause fatal dam age to the com ponents of the printer.
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Maintenance
Overview
136
EPSON Stylus Scan 2500
Revision A
No. 5
No.3
"GEAR, 34"
No. 4
"GEAR, 23.2"
"GEAR, 16,
40.8"
No. 11
No.4
"GEAR, 73.6"
No.4
"COMBINATION
GEAR,8 14.4"
No.6
No.7
Maintenance
Overview
137
EPSON Stylus Scan 2500
Revision A
"HOPPER, ASSEMBLY"
"HOLDER, PULLEY, DRIVEN"
No.10
No.8
"FRAME, ASF"
No.9
Maintenance
Overview
138
EPSON Stylus Scan 2500
Revision A
6.1.2.3 Scanner Mechanism
This chapter provides inform ation necessary to keep the scanner function in
optim um condition constantly and to prevent troubles.
When the carriage unit needs to be replaced, or the operation sound of the
carriage m ovement becomes noisy, it is necessary to apply lubrication.
Following tables show the recomm ended grease type and lubrication points.
Table 6-5. Recom m ended Grease
Supply
Quantity
Type
Nam e
Part No.
Specification
Grease
G-26
40g
B702600001
E*
Note*) “E” m eans exclusive product for EPSON. (Not available on the m arket.)
Table 6-6. Lubrication points
Figure
6-1
Lubrication Points
Lubrication
G-26 (1x3m m )
G-26(1x3m m )
Transm ission Gear Shaft of the CR m otor and
Driven pulley shaft.
6-1
Driven Pulley Shaft
Excessive lubrication m ay damage the mechanism part or
cause the malfunction of the operation.
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Maintenance
Overview
139
C H A P T E R
7
APPENDIX
EPSON Stylus Scan 2500
Revision A
7.1 Connector
This section provides inform ation on Main board connectors. Figure 7-1,
"Cable Connections for Stylus Scan 2500" shows how the m ain com ponent
units are connected.
Scanner
Printer
Mechanism
Mechanism
CR HP
Sensor
CR HP
Sensor
Scanner
CR
Motor
PE
Sensor
ISN
(CCD Sensor
Board)
Print Head
Maintenance
Cover Open
Sensor
PF Motor
ASF HP
Sensor
CR Motor
B102 MAIN
Board
Option I/F
CN8
CN7
CN12
CN11
CN9
CN 14
CN13
CN10
CN2
CN4
CN5 CN6
CN1
Parallel I/F
USB I/F
Pow er
Control Panel
Unit
Figure 7-1. Cable Connections for Stylus Scan 2500
Appendix
Connector
141
EPSON Stylus Scan 2500
Revision A
Table 7-1. Circuit Board Connector Summary (cont.)
7.1.1 Board Connector Summary
Connector
Connection
Pin Number
Refer to
T he table below provides board connector sum m ary of S tylus S can 2500.
Table 7-14,
“Connector Pin
Assignment-
CN15,” on
Table 7-1. Circuit Board Connector Summary
Connector
Connection
B102 MAIN Board
Pin Number
Refer to
CN15
Scanner option
7-pin
page 145
“Printer
Interface” on
page 20
B102 PSB/PSE Board
CN1
CN2
CN3
Centronics parallel interface
Control Panel Unit
USB interface
36-pin
21-pin
4-pin
Table 7-15 on
page 146
CN1
CN2
AC inlet
2-pin
Table 7-2 on
page 143
Table 7-9 on
page 144
Power to B102 MAIN Board
Control Panel Board
B102 MAIN Board
12-pin
“Printer
Interface” on
Table 7-2 on
page 143
14-pin
page 143
CN4
Printer Mechanism (HP sensor)
Printer Mechanism (PE sensor)
Printer Mechanism (ASF sensor)
Printer Mechanism (CR motor)
Printer Mechanism (PF motor)
Printer Mechanism (Printhead)
B101 PSB/PSE board/AC inlet
Scanner Mechanism (HP sensor)
3-pin
3-pin
3-pin
4-pin
4-pin
24-pin
12-pin
2-pin
3-pin
6-pin
14-pin
Table 7-4 on
page 143
CN5
Table 7-5 on
page 143
CN6
Table 7-6 on
page 143
CN7
Table 7-7 on
page 144
CN8
Table 7-8 on
page 144
CN9
Table 7-9 on
page 144
CN10
CN11
CN12
CN13
CN14
Table 7-10 on
page 144
Scanner Mechanism (Maintenance
cover open sensor)
Table 7-11 on
page 145
Table 7-12 on
page 145
Scanner Mechanism (CR motor)
Scanner Mechanism (CCD sensor
board/ISN)
Table 7-13 on
page 145
Appendix
Connector
142
EPSON Stylus Scan 2500
Revision A
Table 7-2. Connector Pin Assignm ent-CN2 (cont.)
7.1.2 Connector Pin Assignm ent
Pin No. Signal Nam e
I/ O
Function
Tables in this section provide connector pin assignm ent of the Stylus Scan
2500.
28
29
30
31
32
SW11
SW12
SW5
I
I
I
I
I
Panel switch input (11)
Panel switch input (12)
Panel switch input (5)
Panel switch input (13)
Panel switch input (14)
Signals of each connector on the B102 MAIN Board are listed below.
SW13
SW14
Table 7-2. Connector Pin Assignm ent-CN2
Pin No. Signal Nam e
I/ O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
Function
1
GND
LD0
Ground
Table 7-3. Connector Pin Assignm ent-CN4
2
Pin No. Signal Nam e
I/ O
I
Function
3
GND
LD1
Ground
1
2
3
HP
Sensor detect signal
Ground
4
GND
HPV
O
5
LED0
LD2
LED drive signal (0)
LED drive signal (1)
LED drive signal (2)
LED drive signal (3)
LED drive signal (4)
O
Sensor power supply (+5V)
6
7
LED1
LD3
Table 7-4. Connector Pin Assignm ent-CN5
8
Pin No. Signal Nam e
I/ O
I
Function
9
LED2
LA0
1
2
3
PE
Sensor detect signal
Ground
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
GND
PEV
O
LED3
LCS
O
Sensor power supply (+5V)
LED4
LWE
+5V
Table 7-5. Connector Pin Assignm ent-CN6
Pin No. Signal Nam e
I/ O
I
Function
LRD
+5V
1
ASF
Sensor detect signal
Ground
2
3
GND
ASFV
O
LCLK
SW1
SW2
SW3
SW4
SW6
SW7
SW8
SW9
SW10
O
Sensor power supply (+5V)
Panel switch input (1)
Panel switch input (2)
Panel switch input (3)
Panel switch input (4)
Panel switch input (6)
Panel switch input (7)
Panel switch input (8)
Panel switch input (9)
Panel switch input (10)
Table 7-6. Connector Pin Assignm ent-CN7
I
I
Pin No. Signal Nam e
I/ O
O
Function
I
1
2
3
4
CR-A
CR-B
CR-/A
CR-/B
Phase drive signal (A)
Phase drive signal (B)
Phase drive signal (/A)
Phase drive signal (/B)
I
O
I
O
I
O
I
I
Appendix
Connector
143
EPSON Stylus Scan 2500
Revision A
Table 7-8. Connector Pin Assignm ent-CN9 (cont.)
Table 7-7. Connector Pin Assignm ent-CN8
Pin No. Signal Nam e
I/ O
O
Function
Pin No. Signal Nam e
I/ O
O
Function
25
26
27
COM
COM
VHV
Head drive power supply
Head drive power supply
1
2
3
4
PF-A
PF-B
PF-/A
PF-/B
Phase drive signal (A)
Phase drive signal (B)
Phase drive signal (/A)
Phase drive signal (/B)
O
O
O
Head drive voltage control signal
O
O
Table 7-9. Connector Pin Assignm ent-CN10
Pin No. Signal Nam e
I/ O
I
Function
Table 7-8. Connector Pin Assignm ent-CN9
1
+12V
+24V
GND
+24V
GND
GND
+42V
+42V
+3.3V
+3.3V
+5V
Mechanism drive power supply
Mechanism drive power supply
Ground
Pin No. Signal Nam e
I/ O
I
Function
2
I
1
COB
COC
THM
GND
LAT
I/C Black detect
3
I
2
I
I/C Color detect
Therm om eter detect system
Ground
4
I
Mechanism drive power supply
Ground
3
I
5
I
4
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
6
I
Ground
5
Head data latch pulse output
Ground
7
I
Mechanical drive power supply
Mechanical drive power supply
Logic power supply
Logic power supply
Logic power supply
Logic power supply
Ground
6
GND
SI6
8
I
7
Head data output (6)
Head data output (5)
Head data output (4)
Head data output (3)
Head data output (2)
Head data output (1)
Ground
9
I
8
SI5
10
11
12
13
14
15
16
17
18
I
9
SI4
I
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SI3
+5V
I
SI2
GND
GND
GND
FAN42
SWO
PSC
I
SI1
I
Ground
GND
CLK
GND
NCHG
GND
VDD
GND2
GND2
GND2
GND2
COM
COM
I
Ground
Clock pulse for head data transfer
Ground
O
I
Not needed
Head all on pulse output
Ground
O
Power supply switch output signal
Logic power supply (+5V)
Ground
Table 7-10. Connector Pin Assignm ent-CN11
Pin No. Signal Nam e
I/ O
I
Function
Ground
1
2
3
HP
Sensor detect system
Ground
Ground
GND
HPWR
O
Ground
O
Sensor power supply (+5V)
Head drive power supply
Head drive power supply
Appendix
Connector
144
EPSON Stylus Scan 2500
Revision A
Table 7-11. Connector Pin Assignm ent-CN12
Table 7-14. Connector Pin Assignm ent-CN15
Pin No. Signal Nam e
I/ O
I
Function
Sensor signal
Ground
Pin No. Signal Nam e
I/ O
O
O
O
O
O
I
Function
1
2
3
COPEN
GND
1
2
3
4
5
6
7
8
+5V
O
GND
+24V
LOD
GND
RxD
TxD
Ground
CPWR
O
+5V
Table 7-12. Connector Pin Assignm ent-CN13
Ground
Pin No. Signal Nam e
I/ O
O
Function
O
O
1
2
3
4
Bx
Ax
B
Scanner CR Motor B
Scanner CR Motor A
Scanner CR Motor B
Scanner CR Motor A
SCK
O
O
A
O
Table 7-13. Connector Pin Assignm ent-CN1 4
Pin No. Signal Nam e
I/ O
O
O
O
O
O
O
O
O
O
O
O
O
I
Function
1
DGND
24V
2
3
VCC
4
RS
5
PH2
6
PH1
7
12VC
SH
8
9
G-SH
R-SH
B-SH
AGND
VOG
AGND
VOR
AGND
VOB
AGND
10
11
12
13
14
15
16
17
18
Green signal
Red signal
Blue signal
O
I
O
I
O
Appendix
Connector
145
EPSON Stylus Scan 2500
Revision A
Table 7-15. Printer Unit EEPROM Address Map (cont.)
7.2 EEPROM Address Map
QPIT
Factory
Address
Explanation
Setting
Settings Settings
This section provides EEPROM address m ap for the Stylus Scan.
l
Head actuator
rank ID for lwEF
14H
00H
00H
(*1)
(*1)
Table 7-15. Printer Unit EEPROM Address Map
Bi-D Adjustm ent
data for Norm al-
dot
QPIT
Settings Settings
Factory
-36<=n=<+36
(by 1/1440 inch)
Address
Explanation
Setting
15H
16H
00H
01H
02H
03H
04H
Password 0
0FH
5AH
41H
00H
00H
-
-
Bi-D Adjustm ent
data for Micro-
dot
-36<=n=<+36
(by 1/1440 inch)
00H
(*1)
Reserved
Reserved
CG
-
Bi-D Adjustm ent
data for Variable-
dot
(*1)
(*1)
-36<=n=<+36
(by 1/1440 inch)
17H
18H
00H
00H
(*1)
(*1)
0: STD, 1: NLSP
0: Standard (World)
2: Custom
Uni-Dadjustm ent -36<=n=<+36
data
05H
Market lD
00H
(*1)
(by 1/1440 inch)
06H
07H
08H
09H
00H
00H
00H
00H
00H
00H
00H
00H
19H
1AH
Reserved
Reserved
1st dot position
00H
00H
-
-
Custom EEPROM
sub num ber
-40<=n=<+40
1BH
1CH
1DH
1EH
00H
00H
00H
00H
(*1)
(*1)
-
adjustm ent data (by 1/1440 inch)
Carriage speed -4<=n<=+4
adjustm ent data (by G.A. tim er unit)
Head actuator
rank lD for VhN
0AH
0BH
0CH
0DH
0EH
00H
00H
00H
00H
00H
(*1)
(*1)
(*1)
(*1)
(*1)
Carriage phase
on Hom e
Head actuator
rank ID for Vhµ
Head actuator
rank ID for VhL
Paper sensor
adjustm ent data (by 1/720 inch)
-127<=n<=+127
(*1)
1FH
20H
21H
22H
23H
24H
25H
ERROR Code
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
Head actuator
rank lD for AR
Head rank MW-
ID
CPSl password
0FH
10H
11H
Reserved
Reserved
Reserved
00H
00H
00H
-
-
-
CPSI license flag 0: disable 1: enable
CPSl font license 0: disable 1: enable
Head actuator
rank lD for lwAB
12H
13H
00H
00H
(*1)
(*1)
Interface
selection
0: Auto, 1: Parallel
2: Serial, 3: USB
00H
(*2)
26H
00H
Head actuator
rank lD for lwCD
Appendix
EEPROM Address Map
146
EPSON Stylus Scan 2500
Revision A
Table 7-15. Printer Unit EEPROM Address Map (cont.)
Table 7-15. Printer Unit EEPROM Address Map (cont.)
QPIT
Settings Settings
Factory
QPIT
Settings Settings
Factory
Address
Explanation
Setting
Address
Explanation
Setting
Interface tim e-
out
0 to 255 (by second, value of
0 m eans 10 seconds)
36H
37H
38H
39H
3AH
3BH
3CH
3DH
3EH
3FH
40H
41H
00H
78H
IEH
00H
42 to 44x360
(by 1/360 inch)
27H
0AH
0AH
Top m argin
78H
Com patibility
speed
0: Fast, 1: Slow
2: Special-1, 3: Special-2
28H
29H
2AH
00H
00H
00H
00H
00H
00H
IEH
1244 to 44x360
(by 1/360 inch)
Bottom m argin
Page length
ECP speed *3
0: Fast, 1: Slow
F0H
IEH
F0H
IEH
IEEE1284 for
Parallel
0: Auto, 1: On
2: Off
1244 to 44x360
(by 1/360 inch)
F0H
00H
00H
00H
00H
0FH
5AH
F0H
bit 1: ECP m ode
(0=Off, 1=On) *4
bit 0: IEEE1284 m ode
(0=On, 1=Off) *5
Reserved
Reserved
Reserved
Reserved
-
-
-
-
-
-
2BH
2CH
I/F Control flags
00H
00H
IEEE1284 for
USB
0: Auto, 1: On
2: Off
00H
01H
2DH
2EH
2FH
30H
31H
Reserved
Reserved
Reserved
Reserved
Reserved
00H
00H
00H
00H
00H
-
-
Password 1
bit 7: Reserved
-
bit 6: black one-tim e
bit 5: color one-tim e
bit 4: Initial fill required
bit 3: Reserved
bit 2: ink cleaning seq.
Bit 1: black CL required
bit 0: color CL required
02H
00H
42H
Ink flag 1
00H
00H
0: Bi-D
1: Uni-D
2: Auto
Print direction
control
32H
33H
02H
08H
02H
08H
CG table
8: PC437, 10: PC850
bit 2: YMC cartridge
changed and cleaned
bit 1: Black cartridge
changed and cleaned
bit 0: Black cartridge
changed and cleaned
bit1: Network I/F m ode
(0=0ff, 1=On),
bit0: Auto line feed
(0=Off, 1=On)
Auto LF,
Network I/F
m ode
43H
Ink flag 2
00H
00H
34H
00H
00H
bit 7: Entry Self-Test
bit 6: Entry Hex-Dum p
bit 5: Extended settings
bit 4: Reserved
bit 3: Reserved
bit 2: Cleaning
44H
45H
46H
47H
00H
00H
00H
00H
00H
00H
00H
00H
Panel m ask
function
Ink counter Cb
35H
00H
00H
bit 1: Replace I/C
bit 0: Load/Eject
Appendix
EEPROM Address Map
147
EPSON Stylus Scan 2500
Revision A
Table 7-15. Printer Unit EEPROM Address Map (cont.)
Table 7-15. Printer Unit EEPROM Address Map (cont.)
QPIT
Settings Settings
Factory
QPIT
Settings Settings
Factory
Address
Explanation
Setting
Address
Explanation
Setting
48H
49H
4AH
4BH
4CH
4DH
4EH
4FH
50H
51H
52H
53H
54H
55H
56H
57H
58H
59H
5AH
5BH
5CH
5DH
5EH
5FH
60H
61H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H(*2)
00H(*2)
62H
63H
64H
65H
66H
67H
68H
69H
00H
00H
00H
00H
00H
00H
00H
00H
00H(*2)
00H(*2)
00H(*2)
00H(*2)
00H
Power off tim e
Ink counter Cy
CL tim e
Accum ulated
print tim e
00H
Ink counter Cm
Ink counter Cc
Ink counter Clm
Ink counter Clc
Reserved
Reserved
^
^
Ink counter Rb
Ink counter Ry
Ink counter A
Appendix
EEPROM Address Map
148
EPSON Stylus Scan 2500
Revision A
Table 7-15. Printer Unit EEPROM Address Map (cont.)
Table 7-16. System Unit EEPROM Map
QPIT
Settings Settings
Factory
QPIT
Settings Settings
Factory
Address
Explanation
Setting
Address
Explanation
Setting
R4C4270= H
6AH
6BH
6CH
6DH
6EH
6FH
70H
71H
72H
73H
74H
75H
76H
77H
78H
79H
7AH
7BH
7CH
7DH
7EH
7FH
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
01H
02H
03H
04H
05H
06H
07H
00H
00H
00H
00H
00H
00H
00H
00H
-*1
-*1
EEPROM
Mapping revision
*1
R4C4270= A
R4C4270= xxH
R4C4270= xxH
-*1
-*1
00H*1
00H*1
-
TBD
TBD
Error code
-
0: enable (default)
1: disable
Endulance Test
m ode
08H
09H
00H
00H
00H
00H
0: Norm al
Power-on
sequence
Printer-IDStrings
[22]
1: Skip scanner initialize
0AH
0BH
0CH
0DH
0EH
0FH
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
00H
00H
00H
00H
00H
00H
(*1)
(*1)
(*1)
(*1)
(*1)
-
*1: Adjusted at factory
*2: Initialized after panel initialization of EEPROM is perform ed.
*3: BUSY signal delay tim e form fall-edge of a -STB signal.
(Fast: Maxim um 1MB/s, Slow: Maxim um 600KB/s
*4: Select IEEE1284 transfer m ode. (ECP or Nibble)
*5: Enable or disable reverse transfer. (When disabled, ignore -SLIN signal
Appendix
EEPROM Address Map
149
EPSON Stylus Scan 2500
Revision A
Table 7-16. System Unit EEPROM Map
Table 7-16. System Unit EEPROM Map
QPIT
Settings Settings
Factory
QPIT
Settings Settings
Factory
Address
Explanation
Setting
Address
Explanation
Setting
10H
11H
12H
13H
14H
15H
16H
17H
18H
19H
1AH
1BH
1CH
1DH
1EH
1FH
20H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
25H
26H
27H
28H
29H
2AH
2BH
2CH
2DH
2EH
2FH
30H
31H
32H
33H
34H
35H
36H
37H
38H
39H
3AH
3BH
3CH
3DH
3EH
3FH
Reserved
Reserved
Reserved
Reserved
Reserved
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
-
-
-
-
-
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
Serial Num ber
(Reserved)
Not used
Device ID strings
[22] *2
Reserved
Interface tim e-
out (Reserved)
21H
22H
23H
Not used
00H
00H
00H
00H*1
00H
-
Com patibility
speed
0: Fast 1: Slow
2: Special-1 3: Special-2
ECP speed
(Reserved)
Not used
0: Auto (Default)
1: NotD4 (Printer Direct
Mode)
1284 I/F Control
flags
2: Printer (Direct m ode with
QualitySW
24H
00H
00H*1
-[PowerSW+QualitySW]:
NotD4(P.D.M.)
-[PowerSW] : Auto
Appendix
EEPROM Address Map
150
EPSON Stylus Scan 2500
Revision A
Table 7-16. System Unit EEPROM Map
Table 7-16. System Unit EEPROM Map
QPIT
Settings Settings
Factory
QPIT
Settings Settings
Factory
Address
40H
Explanation
Paper size
Setting
Address
Explanation
Setting
0:A4 1:B5 2:A6
58H
59H
5AH
5BH
5CH
5DH
5EH
5FH
60H
61H
62H
63H
64H
65H
66H
67H
68H
69H
6AH
6BH
6CH
6DH
6EH
6FH
70H
71H
72H
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H*4
-
3:Letter 4:Half L 5:5x8
Reserved
(R4C4280)
41H
0:14m m (R4C4270 default)
1: 3m m (R4C4280 default)
0: English 1:Germ an
42H
Bottom Margin*3
Language *3
00H*4
43H
2:French 3:Italian
00H
00H*4
4:Spanish 5:Portuguese
44H
45H
46H
47H
48H
49H
4AH
4BH
4CH
4DH
4EH
4FH
50H
51H
52H
53H
54H
55H
56H
57H
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
Appendix
EEPROM Address Map
151
EPSON Stylus Scan 2500
Revision A
Table 7-16. System Unit EEPROM Map
7.3 Exploded Diagram s
QPIT
Factory
Address
Explanation
Reserved
Setting
Settings Settings
This section contains the following exploded diagram s.
73H
74H
75H
76H
77H
78H
79H
7AH
7BH
7CH
7DH
7EH
7FH
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
*1: Used ROM default settings in case of m ism atch with EEPROM Map
Version
*2: Used ROM default settings in case of 00H or FFH.
*3: Changes after perform ing panel settings.
*4: Adjusted at factory
Appendix
Exploded Diagram s
152
181
109
787
105
182
104
186 for EAI
106
100
789
128
128
187
101
806
129
500
108
400 for EAI
185
129
116
400 for ETT
129
123
103
SEE PAGE 2
813
For EUR,S.E.ASIA,
OCEANIA,RUSSIA
400
123
401
450
119
102
331
107 X13
EPSON STYLUS SCAN 2500 No.1
Rev.01 10138
579
128
580
816
801
128
802
128
103
128
809
128
128
127
127
128
790
128
128
128
790
200
809
128
777
798
809
125
117
776
125
128
111
117
128
814
121
128
(813)
111
121
102
110
783
118
128
115
128
125
809
775
809
775
128
779
804
809
128
113
774
798
778
809
128
809
114
128
799
796
330
128
112
815
128
128
798
128
811
809
128
300
EPSON STYLUS SCAN 2500 No.2
Rev.01 10138
833
837
839
805
840
841
833
810
788
836
833
128
838
842
832
835
831
792
NOT ASP
835
822
820
819
748
830
834
749
782
128
781
128
332
763
128
128
128
770
120
803
791
793
785
797
821
817
820
715
128
715
798
763
818
748
784
812
128
128
128
120
786
128
EPSON STYLUS SCAN 2500 No.3
Rev.01 10138
504
534
750
524
527
503
523
588
520
519
532
521
527
513
530
526
517
528
578
(501)
525
521
518
528
591
574
590
577
591
754
573
592
502
EPSON STYLUS SCAN 2500 No.4
Rev.01 10138
747
128
780
794
587
587
126
587
823
510
598
808
807
587
558
557
587
501
567
546
758
756
587
556
565
569
A
757
511
559
587
554
507
555
568
545
552
506
548
(565)
505
551
553
545
550
549
548
A
587
545
587
551
548
587
550
549
545
551
587
548
548
550
549
547
551
550
549
545
551
548
587
551
550
550
549
549 EPSON STYLUS SCAN 2500 No.5
Rev.01 10138
(501)
522
566
183
800
761
759
184
527
760
516
535
762
515
706
800
700
529
536
587
704
531
564
562
705
702
703
772
537
602
701
561
544
538
563
542
596
544
542
601
587
540
544
543
541
767
542
544
542
544
544
768
560
595
539
600
597
542
544
542
600
544
542
587
544
542
(505)
771
544
512
542
773
544
542
544
795
542
544
542
544
587
542
EPSON STYLUS SCAN 2500 No.6
Rev.01 10138
711
709
703
726
727
714
712
740
763
703
713
755
764
739
708
721
718
735
728
707
720
729
741
723
736
743
745
742
738
710
746
737
721
720
736
730
737
739
724
744
716
745
731
733
746
717
719
735
725
734
718
722
732
723
724
EPSON STYLUS SCAN 2500 No.7
Rev.01 10138
122
751
122
576
587
765
509
508
514
588
589
530
533
752
534
766
571
(505)
572
570
753
EPSON STYLUS SCAN 2500 No.8
Rev.01 10138
07
06
02 For S.E.ASIA, CHINA
05
03
(03)
(03)
04
(03)
(03)
01
PACKING MATERIAL FOR EPSON STYLUS SCAN 2500
Rev.01 10138
EPSON Stylus Scan 2500
Revision A
Table 7-17. Parts List
Part Nam e
7.4 Parts List
Refernce Num ber
187
200
300
330
331
332
400
450
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
LABEL,ALIGNMENT
BOARD ASSY.,MAIN
BOARD ASSEMBLY,POWER SUPPLY
WIRE-HARNESS
Table 7-17. Parts List
Part Nam e
PAPER SUPPORT ASSY.
Refernce Num ber
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
181
182
183
184
185
186
HOUSING ASSY, UPPER(ASP)
HOUSING,R
WIRE-HARNESS
WIRE-HARNESS
HOUSING,L
POWER CABLE ASSY.
CONTROL PANEL
CAP,CABLE,ADF
COVER,DOCUMENT
MAT,COVER,DOCUMENT
SHEET,COVER,25
HOUSING,REAR
PRINTER MECHANISM(ASP)M4M12-100
FRAME ASSY.,LEFT
MOTOR ASSY.,PF
SPUR GEAR,23.2
COVER,MAINTENANCE
STACKER,REAR
COMBINATIONGEAR,16,40.8
FRAME,RIGHT
COVER,CABLE;C
FRAME,TOP
STACKER,SUPPORT
STACKER,FRONT
KEYTOP,ADJ UST,PG
KEYTOP,P/S
MOTOR ASSY.,CR
PUMP ASSY.
CAP ASSY.;B
FRAME,BOTTOM
LOGO PLATE
SHEET,PROTECTION,HEAD
FRAME,FRONT;B
FOOT
GROUNDING PLATE
FOOT,15
BUSHING,PARALLELISM ADJ UST,LEFT
BUSHING,PARALLELISM ADJ UST,RIGHT
PAPERGUIDE,REAR
ROLLER,PF
LABEL,CAUTION 1
LABEL,CAUTION 2
LABEL,LEVER CARTRIDGE,BLACK
LABEL,LEVER CARTRIDGE,COLOR
LABEL,CARRIAGE LOCK
LABEL,ACCESSORY
COMPRESSION SPRING,5.85
BUSHING,12,LEFT
LEVER,CHANGE
Appendix
Parts List
162
EPSON Stylus Scan 2500
Revision A
Table 7-17. Parts List
Part Nam e
Table 7-17. Parts List
Part Nam e
Refernce Num ber
520
Refernce Num ber
SPURGEAR,26.4
SPACER,C-RING
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
576
SHAFT,PAPER GUIDE,UPPER
SHAFT,ROLLER,DRIVEN
ROLLER,DRIVEN;D
TORSION SPRING,117.6
CIRCUIT ASSY,PE
521
522
SCALLOP SPRING PIN-AW,2X16,F/B
COMPRESSION SPRING,0.9
SPURGEAR,73.6
523
524
525
SPACER,FASTEN,ROLLER,PF
SPACER,FASTEN,ROLLER,PF;B
C-RING
HOLDER,PE
526
LEVER,PE
527
TORSION SPRING,0.22
SHEET,GUIDE PLATE,CABLE
GUIDEPLATE,CABLE
SHEET,CABLE
528
PLANE WASHER,12.2X0.5X15
ROLLER,ASSY.,PAPEREJ ECT
BUSHING,6
529
530
531
RETAINING RING
DETECTOR,HP
532
SPUR GEAR,36
CARRIAGE ASSY.
533
SUPRGEAR,11
LEVER,ADJ UST
534
PLANE WASHER,4.1X0.5X6.5
PAPER GUIDE,FRONT;B
GROUNDING WIRE,EJ
GUIDE,PAPER EJ
GROUNDING PLATE,HEAD
OIL PAD
535
536
SLIDER,CR
537
TIMINGBELT
538
FRAME, PAPEREJ ECT
HOLDER,STAR WHEEL,RIGHT
HOLDER,STAR WHEEL,LEFT
HOLDER,STARWHEEL,FRONT
STARWHEEL ASSY.,8;E
STARHWEEL,8;B
SHAFT,CR,GUIDE
539
PULLEY ASSY.,DRIVEN
HOLDER,PULLEY,DRIVEN;B
COMPRESSION SPRING,19.6
LEVER,PG
540
541
542
543
LEVER,PG,SUPPORT
TORSION SPRING,63.7
CONBINATION GEAR,12.4,28
COMBINATION GEAR,16,21.6
POROUS PAD,SLIDER,CAP
544
ROD SPRING,STAR WHEEL
PAPER GUIDE,UPPER
PAPER GUIDE,LEFT
545
546
547
PAPER GUIDE,RIGHT
Appendix
Parts List
163
EPSON Stylus Scan 2500
Revision A
Table 7-17. Parts List
Table 7-17. Parts List
Part Nam e
Refernce Num ber
577
Part Nam e
BUSHING,FASTEN,COMBINATION GEAR
PUSHING NUT,2
Refernce Num ber
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
SLIDER,EDGEGUIDE
578
COMPRESSION SPRING,3.23
PAD,BREAK,EDGE GUIDE
REINFORCEMENT PLATE,HOPPER
HEXAGON NUT,NORMAL,M3
PAD ASSY.,RIGHT
579
HARNESS,HP
580
HARNESS,PE
587
C.B.S. SCREW
588
C.P.S-TITE(P4),3X6,F/ZN
LEAF SPRING
589
LEVER,PAD,RELEASE,RIGHT
ROD SPRING,HOLDER,PAD
HOLDER,EDGEGUIDE,RIGHT
COMPRESSION SPRING,1.17
EXTENSION SPRING,0.62
LEVER,PAPERRETURN,RIGHT
EXTENSION SPRING,0.294
ROLLER,LD,SUPPORT
590
PLANE WASHER,6.1X0.5X9.0
HEXAGON NUT,NORMAL,M3
PLAIN WASHER
591
592
595
HOLDER, DETECTOR,I/C
LEVER,DETECTOR,I/C,BK
LEVER,DETECTOR,I/C,CL
GROUNDING PLATE,ROLLER,PF
TORSION SPRING,1.08
DETECTOR,I/C
596
597
598
600
HOLDER,ROLLER,LD,SUPPORT,RIGHT
PAD ASSY.,LEFT
601
602
HARNESS,I/C
LEVER,PAD,RELEASE,LEFT
HOLDER,EDGEGUIDE,LEFT
LEVER,PAPERRETURN,LEFT
HOLDER, ROLLER,LD,SUPPORT,LEFT
ROLLER ASSY.,LD,LEFT
700
PRINT HEAD IJ 288-0AA
FASTENER,HEAD
701
702
TORSION SPRING,49
C.B.P-TITE SCREW,3X6,F/ZN
CABLE,HEAD
703
704
ROLLER ASSY.,LD,RIGHT
COVER,ROLLER,LD,LEFT
COVER,ROLLER,LD,RIGHT
COMPRESSION SPRING,1.961
LEVER,FASTEN,EDGEGUIDE;B
EXTENSION SPRING,0.088
SHAFT,ROLLER,LD
705
HOLDER,CABLE
706
SPACER,CABLE HEAD
FRAME,ASF;B
707
708
HOPPER
709
EDGEGUIDE
710
CORK
Appendix
Parts List
164
EPSON Stylus Scan 2500
Revision A
Table 7-17. Parts List
Table 7-17. Parts List
Part Nam e
Refernce Num ber
739
Part Nam e
LEVER,HOPPER,RELEASE
WHEEL,DETECT
Refernce Num ber
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
C.P.B.(O) SCREW,1.7X5,F/ZN
BUSHING,HOLDER,DETECTOR,I/C
C.B.P-TITE SCREW,4X10,F/ZN
RETAINING RING
740
741
LEVER,BRAKE
742
PAD,BREAK
743
TORSION SPRING,41.2
BUSHING,FASTEN,SHAFT
SHEET,PAPERFEED
HOLDER ASSY.,STAR WHEEL,RIGHT,ASP
HOLDER ASSY.,STAR WHEEL,LEFT,ASP
C.C.S. SCREW
744
745
746
HOLDER,SHEET,PAPERFEED
SHAFT,MOUNT,CR
COVER,CABLE;B
747
BRACKET,PRINTER
SHIELD PLATE,M/B
748
RETAINING RING
749
C.B.P.SCREW,2.5X6,F/ZN
SPURGEAR,34
SHIELD PLATE,M/B,SUPPORT
SHIELD PLATE,P/S
750
751
PAPERGUIDE,LOWER
POROUSPAD,INKEJ ECT,LARGE
TRAY,PORUSPAD
COVER,INLET
752
ASF UNIT;C
753
SHAFT,CR,SC
754
SPACER,TRAY
LOCK,CARRIAGE
755
BUSHING,FASTEN,SHAFT,LEFT
PAPER SUPPORT,SUUPPORT,UPPER
HOLDER,PAPERSUPPORT,SUPPORT,UPPER
EXTENSION SPRING,0.29
COVER,CARTRIDGE,BK
COVER,CARTRIDGE,C
SEPARATOR,CARTRIDGE,BK
SEPARATOR,CARTRIDGE,C
DETECTOR,HP
LEVER,ADJ UST,PG
756
SHEET,CABLE,SC
757
SHEET,CABLE,SUPPORT,SC
SHEET,HOUSING
758
759
COVER,CARRIAGE,I/C
SHUTTER
760
761
TORSION SPRING,5.2
MINICLAMP,YMC-15-0 V0
BRACKET ASSY.,PULLEY,DRIVE
BRACKET ASSY.,PULLEY,DRIVEN
BRACKET,OP
762
763
764
CORK;B
765
CLEANER,HEAD,ASP
766
POROUSPAD,INKEJ CT,SMALL
COVER,GEAR
Appendix
Parts List
165
EPSON Stylus Scan 2500
Revision A
Table 7-17. Parts List
Table 7-17. Parts List
Part Nam e
Refernce Num ber
795
Part Nam e
FRAME,FRONT,SUPPORT
GROUNDING PLATE,P/S
FRAME,MAIN ASSY.
BUSHING,EDGE
FOOT,P/S
Refernce Num ber
823
830
831
832
833
834
835
836
837
838
839
840
841
842
1
FERRITE CORE
796
CARRIAGE UNIT,SC
DOUBLE SIDE TAPE,28X10
CLAMP,FERRITE CORE
C.C.P-TITE,3X8,F/ZB
FOOT,CARRIAGE
797
798
799
800
SPACER,COVERCATRIDGE
HARNESS,CM
801
CARRIAGE GUIDE SHAFT HOLDER
HARNESS
802
HARNESS,HP,SC
MOTOR,CR,SC
803
LAMP ASSY.
804
SHEET,P/S;B
BOARD ASSY.,INVERTER
FERRITE CORE
805
PAD,FFC
806
LOCK,SUPPORT
BRAKET,CORE,SC
DOUBLE SIDE TAPE,28X10
C.B.S-TITE,4X5,F/ZN
CLAMP,TIMING BELT
FRAME,FRONT
COVER,CARRIAGE
WIRE-HARNESS
807
808
SHEET,CCD
809
INDIVIDUAL CARTON BOX,FOR AMERICA
PAD SET,SPC
810
3
PLASTIC PROTECTIVE BAG
720X800X0.05T
811
4
812
SHEET,SLIDE
5
6
PAD,ACCESSORY
813
FRAME,BOTTOM
FRAME,SIDE,L
PAD,COVER,DOCUMENT
814
PLASTIC PROTECTIVE
BAG,315X305X0.05T
7
815
FRAME,SIDE,R
816
HARNESS,ASF
817
PULLEY,DRIVE
818
PULLEY,IDLE
819
PULLEY,DRIVEN
FRANGE,PULLEY
TIMING BELT
820
821
822
EXTENSION SPRING,18.4
Appendix
Parts List
166
EPSON Stylus Scan 2500
Revision A
7.5 Component Layouts
B102 MAIN Board 1
B102 MAIN Board 2
B102 PSB Board
B102 PSE Board
Appendix
Component Layouts
167
EPSON Stylus Scan 2500
Revision A
Figure 7-2. B101 MAIN Component Layout 1
Appendix
Component Layouts
168
EPSON Stylus Scan 2500
Revision A
Figure 7-3. B101 MAIN Component Layout 2
Appendix
Component Layouts
169
EPSON Stylus Scan 2500
Revision A
Figure 7-4. B102 PSE Board Component Layout
Appendix
Component Layouts
170
EPSON Stylus Scan 2500
Revision A
Figure 7-5. B102 PSB Board Component Layout
Appendix
Component Layouts
171
EPSON Stylus Scan 2500
Revision A
7.6 Circuit Diagram s
This section contains the following circuit diagram s.
B101 MAIN Board (x3)
B101 PSB Board
B101 PSE Board
Appendix
Circuit Diagram s
172
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