C9000 Series
Color LED Page Printer
Service Manual
ODA
05-18-200 Based on Rev.2
41388601TH Rev.2A
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PREFACE
This maintenance manual provides procedures and techniques for the troubleshooting, maintenance, and
repair of C9000.
This manual is written for maintenance personnel, but it should always be accompanied with the C9000
User’s Manual for procedures for handling and operating C9000. For repairing each component of C9000,
see the Troubleshooting manual.
[Notices]
The contents of this manual are subject to change without prior notice.
Although reasonable efforts have been taken in the preparation of this manual to assure its accuracy, this
manual may still contain some errors and omissions. OKI will not be liable for any damage caused or
alleged to be caused, by the customer or any other person using this maintenance manual to repair,
modify, or alter C9000 in any manner.
[Warning]
Many parts of C9000 are very sensitive and can be easily damaged by improper servicing. We strongly
suggest that C9000 be serviced by OKI’s authorized technical service engineers.
41388601TH Rev.2
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CONTENTS
1. SPECIFICATIONS ............................................................................................ 7
1.1 Basic System Configuration ............................................................................................. 7
1.2 Printer Engine Specifications ........................................................................................... 8
1.3 Option Configuration ........................................................................................................ 9
1.4 Specifications ................................................................................................................. 10
2. OPERATION DESCRIPTION ......................................................................... 12
2.1 Main Control Board (CRM-PWB) ................................................................................... 13
2.2 Engine Control Board (K73 PWB).................................................................................. 15
2.3 Power Units.................................................................................................................... 16
2.4 Mechanical Processes ................................................................................................... 17
2.4.1 Electrophotographic process ............................................................................ 18
2.4.2 Paper running process ..................................................................................... 22
2.5 Sensor............................................................................................................................ 31
2.5.1 Paper related sensors ...................................................................................... 31
2.5.2 Other sensors ................................................................................................... 32
2.6 Color Misalignment Correction....................................................................................... 33
2.7 Transfer Control Responds to Environmental Changes
(Room Temperatures and Relative Humidities) ............................................................. 33
2.8 Paper Jam Detection ..................................................................................................... 34
2.9 Cover Opening ............................................................................................................... 35
2.10 Toner Low Detection ...................................................................................................... 36
2.11 Paper Size Detection ..................................................................................................... 37
2.12 Operation at Power-on ................................................................................................... 38
2.12.1 Self-diagnostic test ........................................................................................... 38
2.13 Color Misalignment Detection ........................................................................................ 39
2.14 Version Read of Periodically Replaced Units ................................................................ 40
2.15 Life Counter for Replaceable Units ................................................................................ 40
2.16 Toner Consumption Detection ....................................................................................... 40
3. PARTS REPLACEMENT................................................................................ 41
3.1 Precautions in Replacing Parts ...................................................................................... 41
3.2 Parts Layout ................................................................................................................... 43
3.3 Replacing Parts.............................................................................................................. 50
3.3.1 Top cover.......................................................................................................... 51
3.3.2 LED Assy/ LED Assy spring ............................................................................. 52
3.3.3 Top cover unit................................................................................................... 53
3.3.4 Control panel Assy/ Control panel bezel/ LED control PWB/ Toner sensor/
Stack full sensor/ Control panel tape harness/ Eject roller ............................... 54
3.3.5 Top cover handle/ Tope cover latch/ Top cover latch spring............................ 55
3.3.6 Eject guide Assy ............................................................................................... 56
3.3.7 Cassette Assy/ Blind cover/ Side cover R Assy ............................................... 57
3.3.8 Feed rollers....................................................................................................... 58
3.3.9 Left side cover .................................................................................................. 59
3.3.10 Face-up tray ..................................................................................................... 60
3.3.11 Front cover ....................................................................................................... 61
3.3.12 Rear cover ........................................................................................................ 62
3.3.13 Multipurpose tray Assy/ Multipurpose tray cover Assy/ Links/
Multipurpose tray top cover/ Multipurpose tray drive gear................................ 63
3.3.14 Drum contact Assys.......................................................................................... 64
3.3.15 Registration roller Assy (A)/ Registration drive gear (A)................................... 65
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3.3.16 Registration roller Assy (B)............................................................................... 66
3.3.17 Registration clutch, Registration motor Assy.................................................... 67
3.3.18 Cooling fan ....................................................................................................... 68
3.3.19 Color registration sensor Assy.......................................................................... 69
3.3.20 Duplex guide Assy ............................................................................................ 70
3.3.21 Electrical chassis/ Electrical chassis cooling fan .............................................. 71
3.3.22 Printer engine controller PWB .......................................................................... 72
3.3.23 Printer unit chassis ........................................................................................... 73
3.3.24 Entrance cassette sensor actuator ................................................................... 74
3.3.25 Entrance sensor PWB ...................................................................................... 75
3.3.26 Entrance MT sensor actuator and Entrance belt sensor actuator .................... 76
3.3.27 Main motor fan/ Fuser eject roller..................................................................... 77
3.3.28 Eject sensor Assy ............................................................................................. 78
3.3.29 Fuser latching handle (L).................................................................................. 79
3.3.30 Belt motor Assy ................................................................................................ 80
3.3.31 Fuser latching handle (R) ................................................................................. 81
3.3.32 Main motor Assy............................................................................................... 82
3.3.33 Contact Assy/ Side plate Assy.......................................................................... 83
3.3.34 Low voltage power supply ................................................................................ 84
3.3.35 High voltage power supply ............................................................................... 85
3.3.36 Main feed Assy ................................................................................................. 86
3.3.37 Fuser unit.......................................................................................................... 87
3.3.38 Belt unit............................................................................................................. 88
3.3.39 Duplex unit........................................................................................................ 89
3.3.40 CU Assy............................................................................................................ 90
4. Adjustment .................................................................................................... 92
4.1 Maintenance Menu and Its Functions ............................................................................ 92
4.2 Short Plug Settings ........................................................................................................ 93
4.3 Printing Singly Using Controller-Equipped Printer ......................................................... 93
4.4 Adjustment after Part Replacement ............................................................................... 94
4.5 Color Balance Adjustment ............................................................................................. 95
4.6 EEPROM Replacement after CRM Board and K73 Board Replacement ...................... 97
5. Regular Maintenance .................................................................................... 98
5.1 Parts to be Replaced Regularly ..................................................................................... 98
5.2 Cleaning ......................................................................................................................... 98
5.3 Cleaning of LED Lens Array .......................................................................................... 98
5.4 Cleaning of Pick-up Roller ............................................................................................. 98
6. TROUBLESHOOTING PROCEDURES ......................................................... 99
6.1 Tips for Troubleshooting ................................................................................................ 99
6.2 Check Points before Correcting Image Problems .......................................................... 99
6.3 Tips for Correcting Image Problems .............................................................................. 99
6.4 Preparation for Troubleshooting .................................................................................. 100
6.5 Troubleshooting Flow................................................................................................... 100
6.5.1 LCD Message List .......................................................................................... 101
6.5.2 LCD message troubleshooting ....................................................................... 106
6.5.3 Image troubleshooting .................................................................................... 117
7. WIRING DIAGRAM...................................................................................... 129
7.1 Resistance Check ........................................................................................................ 129
7.2 Parts Layout on Boards ............................................................................................... 134
8. Parts List ...................................................................................................... 138
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1.
SPECIFICATIONS
1.1 Basic System Configuration
The basic system configuration of C9000 is illustrated in Figure 1.1.
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1.2 Printer Engine Specifications
The inside of the printer is composed of the followings:
• Electrophotographic Processor
• Paper Paths
• Controller Block (CU and PU)
• Operator Panel
• Power Units (High-Voltage Unit and Low-Voltage Unit)
Figure 1-2 shows the printer configuration.
Figure 1.2
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1.3 Option Configuration
The followings are available as options on C9000.
(1) 2nd Tray/ 3rd Tray
(2) Duplex Unit
(3) Large-Capacity Tray
(4) Expansion Memory 64/128/256MB
(5) Internal Hard Disk
(6) Ethernet Board
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1.4 Specifications
(1) Dimensions Height: 18.11 in.
Width: 26.22 in.
Length: 24.65 in.
(2) Weight
(3) Paper
158.7 lbs.
Type: Ordinary paper and transparencies (Recommended: ML OHP01)
Size:
Postal card, Legal 13" or 14", Executive, A4, A5, B5, A6, A3 A3-Nobi, B4
(Only the 1st tray and the front feeder support A6 and postal card
sizes.)
Weight: 1st tray
2
55 kg to 90 kg (64 to 105g/m )
2
Front feeder 55 kg to 140 kg (64 to 163g/ m )
(4) Print Speed Color: 21 pages per minute (Transparency: 5 pages per minute)
Monochrome: 26 pages per minute (Transparency: 15 pages per minute)
Postal Card, Label, Thick Paper: 10 pages per minute
(5) Resolution 600 × 600 DPI / 600 x 1200 DPI (C9200 series) & 1200 x 1200 DPI (C9400 series)
(6) Power Input 100VAC ±10%
(7) Power Consumption
Peak: 1400W
Idle: 150W
Normal Operation: 550W (5% duty)
Power Saving Mode: 50W
(8) Frequency 50Hz or 60Hz ± 2%
(9) Noise
Operating:
Standby:
54 dB (without Second tray)
45 dB
Power Saving: 43 dB
(10) Consumable Life Toner Cartridge: 15,000 pages (5% duty)
(in each of Y, M, C and K)
(in each of Y, M, C and K)
Image Drum:
39,000 pages (5% duty, Continuous printing)
(11) Parts Replaced Periodically Fuser Unit Assy:
Belt Cassette Assy:
Every 80,000 pages
Equivalent of 80,000 pages (3P/J)
Transfer Belt cartridge: 60,000 prints
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(12) Temperatures and Relative Humidities
Temperature
Temperature (ºF)
Temperature (ºC)
Remark
17 to 27ºC (Temperatures to
assure full color print quality)
Operating
50 to 89.6
10 to 32
Non-Operating
32 to 109.4
-14 to 109.4
-20 to 122
-20 to 122
0 to 43
-10 to 43
-29 to 50
-29 to 50
Power-off
Storage (Max. One Year)
Transport (Max. One Month)
Transport (Max. One Month)
With drum and toner
With drum and without toner
With drum and toner
Humidity
Relative Humidity (%) Max. Wet-Bulb Temperature (ºC)
Remark
Operating
20 to 80
25
50 to 70%
(Humidities to assure full color print quality)
Non-Operating
Storage
10 to 90
10 to 90
10 to 90
26.8
35
Power-off
Transport
40
(13 Printer Life 1,000,000 pages (on a A4 basis) or five years
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2.
OPERATION DESCRIPTION
C9000, a tandem color electrophotographic page printer, adopts technologies such as 4992-LED
array,OPC,drysingle-componentnon-magneticdeveloping,rollertransferandheat-compression
fusing. The printing method is black writing by shedding light on print areas.
Figure 2-1 provides the block diagram of this device.
S1 Gray
Y1 White
S1
S
A
A
STUCK POWER
TNRC
P16 Browm
P15 Red
P27
P31
P T O N
D U P _ P A P
P14
TNRM
L I M A
0 0 2 C 1
0 0 2 M 1
P14 Yellow
P O C W
P O M W
P18 Blue
P26
P30
0 0 2 K 1 0 0 2 Y 1
P K O W P Y O W
P13
P17
P18
P12
P22
TNRY
P18 Red
P12 Yellow
aRV
attached
to clutch
P25
P29
P18 Yellow
P21
P11
P19
TNRK
P20
PANEL
P18 Black
P10
P24
P28
P19 White
Black
White
P1
Operator
Panel
X71 Board
Y5 Blown
attached to motor
P2 White
Y3 Red
Y3 Yellow
Y4 Green
P4 Green
D2 Yellow
D2 Green
Black
White
Black
White
I DPOSK
I DPOSY
I DPOSM
I DPOSC
IDK
K Charge Elimination Lamp Fuse
IDY
Y Charge Elimination Lamp Fuse
IDM
M Charge Elimination Lamp Fuse
IDC
C Charge Elimination Lamp Fuse
Black
Black
Figure 2.1
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2.1 Main Control Board (CRM-PWB)
Figure 2-2 provides the block diagram of the main control board (CRM-PWB).
I F B u s
· 4
S D R A M D I M M
3 ×
F L A S H D I M M
M O
F L A S H R
1 6 2 2 1 2
F E T S W
Figure 2.2
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(1) CPU
The CPU is 64-bit bus RISC processor PowerPC750, which receives an input of 80MHz
(=BUS CLK) and operates at 400MHz, four-times the input.
(2) Secondary Cache SRAM
SRAM is included as a secondary cache of the CPU on the board.
(3) ROM
The ROM is inserted into the three 168-pin DIMM slots. The slot A is for a program ROM
and the slot B is for the Japanese Kanji font. The slot C is not assigned.
(4) RAM
The RAM is inserted into the four 168-pin DIMM slots. The DIMMs must be fitted in
descending order of the type No. labeled on each of them into the slots 1, 3, 2 and 4.
SDRAM DIMM Specifications:
Speed:
Capacity:
PC100 or more
64/128/256MB
Configuration: Without parity and ECC. Requires the SPD information. Number of
chips contained = 8 or 16.
(5) EEPROM
The EEPROM (16Kb), an 8-pin DIP package, is inserted into the IC socket supplying the 3.3V
power. Settings for controlling the controller block are stored in the memory.
(6) Flash ROM
A 2-megabyte flash ROM is surface-mounted on the CRM board. The flash ROM, composed
of four chips of 256 kilo x 16 bits, can store fonts and macros.
(7) Memory Control LSI (CI)
A 696-pin BGA package ASIC made by NEC, which is equipped with a cooling heat sink and
mainly controls the CPU I/F, memory, video data compression and decompression, and PU-
video I/F.
(8) Interface Control LSI (C2)
A BGA package ASIC made by Toshiba, which controls the PU command I/F, operator panel
I/F, IDE I/F, Centronics I/F, USB I/F, PCI I/F, EEPROM and SPD (SDRAM DIMM) I/F.
(9) IDE HDD
An IDE connector is surface-mounted on the board to which an IDE HDD, assembled using
molds for the purpose, is connected. The IDE HDD is used for storing font data, spooling
edited video data temporarily and registering form data.
(10) PCI Bus Option
Two PCI I/F slots are provided for option board use. The bus, which uses an Oki Data original
connector, can accept an Ethernet board.
(11) Host Interface
Standard:
Centronics two-way parallel I/F (IEEE-1284-compliant)
USB (USB1.1-compliant)
Additional Board: (connected to PCI BUS)
Ethernet Board
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2.2 Engine Control Board (K73 PWB)
28MHz
Fan control
Control Panel
Duplex
Cover front/upper open
Stacker full
Cassette 2/3
CPU
Analog output
MSM66Q577
Test switch
(Color registration sensor adjustment)
Analog input
(Temperature change)
A/D CON
(Power supply cooling)
Analog Input
Switch
Analog input (OHP)
Analog input (Various densities)
8Mbit(1MByte)
FLASH
256Kbit(32KByte)
SRAM
×
2
CPU BUS
Motor interruption
UART interruption
K Head I/F
48MHz
Y Head I/F
M Head I/F
C Head I/F
32bit Video I/F
Heater control
Motor Driver
Fuse Cut Driver
EEPROM
LSI
Motor Driver
(VIDEO MEM
Containing
4Mbit DRAM)
D/A
9x Pulse Motors
DC Motor
(Geared Motor)
DC Motor Driver
Toner and ID sensors ID check
High-Voltage Power Supply
Serial Interface (2 channels)
CU I/F
Paper Feed System Sensors
(Paper Feed, Paper Registration and Eject Sensors)
MT Sensor (Stage position and paper empty)
Cassette 1 Sensor (Paper empty and near empty)
Shutter, clutch, belt and fuser checks
Cassette size
Figure 2.3
The engine control block (PU) is controlled by the engine control board (K73 PWB) which consists
of a CPU (MSM66Q577), general LSI chip, flash ROM, EEPROM, pulse motor drivers, and video
memory (see Figure 2.3).
(1) CPU
This, a 16-bit CPU with an AD converter (OKI MIM66Q577), controls the entire system.
(2) General LSI
This LSI (MG63P011-001LA), which is contained in the printer engine control block,
incorporates 4 megabits of video memory and has functions such as engine-controller
interfacing, LED interfacing, motor control, sensor input, video memory control, main scan
color misalignment correction, skew correction and high-voltage power supply control.
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(3) Flash ROM
8 megabits of flash ROM (MBM29F800TA-70) which stores PU programs.
(4) EEPROM
4kilobitsofEEPROM(NM93C66N-NW)whichismountedontheboardwithanICsocketand
stores correction values.
(5) Pulse Motor Driver
The pulse motor driver (A2918, A2919, A3955) drives nine pulse motors to revolve the EP
and carry media.
(6) SRAM
This SRAM (62256LFP-7LL) is used as working memory of the CPU.
2.3 Power Units
There is a low-voltage power unit, which consists of an AC filter circuit, low-voltage power circuit
andheaterdrivercircuit, andahigh-voltagepowerunitwhichsuppliesahigh-voltagepowercircuit.
(1) Low-Voltage Power Unit
This circuit generates the following voltages:
Output voltage
+3.3 V
Use for
Logic circuit power supply
Logic circuit power supply
+3.8V
+5 V
Motor and drive voltage for high-voltage power supply
OP Amp, High-voltage power supply
LED head
+32 V
+12 V
(2) High-Voltage Power Unit
This circuit generates the following 34V or more voltages, which are required for electropho-
tographic process, according to control sequences from the control board.
Output
CH
Voltage
-900 to -1400±50V
Y, M, C: -10 to -400V/+300V
-10 to -400V/+300V
Y, M, C: -100 to -700/0V
0 to 7KV
Use for
Remarks
Voltage to charging roller
Voltage to developing roller
DB
K:
SB
Voltage to toner supplying roller
Voltage to transfer roller
TR
Variable
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2.4 Mechanical Processes
Figure 2.4 shows the mechanical processes of the printer.
Figure 2.4
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2.4.1 Electrophotographic process
(1) Electrophotographic process
The following is the outline of electrophotographic process:
1 Charging
DC voltage is applied to the charging roller and the surface of the OPC drum is negatively
and evenly charged.
2 Exposure
The LED head, under image signals, emits light to the negatively charged surface of the
OPC drum. The radiated portions of the drum surface attenuate in negative charge
according to the intensity of the light and, based on the surface potentials, a latent
electrostatic image is formed on the drum surface.
3 Development
Negatively charged toner contacts the OPC drum and, by electrostatic force, adheres to
the latent electrostatic image to form a clear image on the drum surface.
4 Transfer
Paper is placed on the surface of the OPC drum, and positively, or opposite to the polarity
of the toner, charged by the transfer roller on its back to transfer the toner image to the
paper.
5 Cleaning
The cleaning blade removes residual toner from the OPC drum after the transfer.
6 Fusing
The toner image on the paper is fused into place through the application of heat and
pressure to it.
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(2) Charging
Negative DC voltage is applied to the charging roller contacting the surface of the OPC drum.
Power
Unit
Charging roller
OPC drum
(3) Exposure
The negatively charged surface of the OPC drum is radiated with light from the LED head.
The negative charge of the radiated portions of the drum surface attenuates in response to
the intensity of the light and a latent electrostatic image responsive to the potentials of the
surface is formed on the drum surface.
LED head
LED head
Charging roller
Power
Unit
OPC drum
Paper
OPC drum
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(4) Developing
By the adhesion of toner to the latent electrostatic image on the drum surface, the image is
changed to a toner image. The developing is processed at the contact part between the OPC
drum and the developing roller.
1 The sponge roller causes toner to adhere to the developing roller. The toner becomes
negatively charged.
Developing roller
Developing blade
Charging roller
Sponge roller
Developing roller
OPC drum
2 The developing blade removes excess toner from the developing roller and a thin layer
of remaining toner is formed on the developing roller.
3 The toner is drawn by the latent electrostatic image at the contact portion between the
OPC drum and the developing roller.
The latent electrostatic image on the drum surface is made visible with the toner.
(5) Transferring
The transfer roller, which is made of conductive sponge, presses paper against the surface
of the OPC drum and brings the paper into intimate contact with the drum surface.
The paper is placed on the drum surface and positively (opposite to the charge of the toner)
charged by the transfer roller on its back.
Applying positive high voltage from the power supply to the transfer roller moves the positive
charge induced by the transfer roller to the paper surface at the contact portion between the
transferrollerandthepaper, thepapersurfacedrawingthenegativelychargedtonerfromthe
drum surface.
OPC drum
Paper
Carrier belt
Transfer roller
Power unit
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(6) Fusing
When passed between the heat roller and the backup roller, the toner image transferred to
the paper is fused into place by the application of heat and pressure to it.
The Teflon coated heat roller is heated by the built-in heat roller of 800W/backup roller of
500W (halogen lamp). The fusing temperature is controlled by the sum of the temperature
detected by the thermistor moving over the surface of the heat roller and the temperature
detected by the thermistor moving over the surface of the backup roller. A thermostat, which
is provided for safety, becomes open by a heat roller temperature rise of not less than fixed
degrees and cuts off voltage supply to the heater. The backup roller is being pressed against
the heater by the pressure springs on both sides.
Thermostat
Thermistor
Heat roller
Paper
Thermostat
Backup roller
Thermistor
(7) Cleaning
Non-fused, residual toner on the OPC drum is scraped with the cleaning blade and collected
in the waste toner area of the toner cartridge.
Waste toner area
(8) Cleaning
Residual toner on the transfer belt is scraped with the cleaning blade and collected in the
waste toner box of the transfer belt unit.
Cleaning blade
Waste toner box
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2.4.2 Paper running process
Figure 2.5 shows how paper moves in the C9000.
Fuser
Registration roller Assy (B)
Face-down stacker
Heat roller
4 x LED Units
4 x LED heads
Registration roller Assy (B)
Hopping roller
Eject roller
Multipurpose tray
Belt unit
Eject roller
Low-voltage power supply
Cassette 1
Registration roller Assy (A)
High-voltage power supply
Cleaning blade
Transfer roller
Cassette 2
Feed roller
Cassette 3
Cassette 4
Backup roller
Cassette 5
Figure 2.5 Paper Route
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(1) Paper Loading from 1st Tray
1. The paper loading motor runs (CCW), the paper loading clutch is engaged and, until the
entrance cassette sensor is turned on, paper is advanced (the on/off operations of the
paper loading clutch control the pickup roller).
2. After the paper turns the entrance cassette sensor on, the paper is forwarded a further
fixed length and touches the registration roller Assy (A) (this corrects paper skew).
3. The electromagnetic clutch is engaged and the paper is carried onto the carrier belt.
Registration roller Assy (B)
Registration motor
Entrance sensor
Entrance belt sensor
Electromagnetic clutch
Entrance cassette sensor
Registration roller Assy (A)
Feed roller
Electromagnetic clutch
Pickup roller
Loading sensor
Paper
Retard roller
Loading motor
Figure 2.6
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(2) Paper Loading from Option Tray
1. The paper loading motor runs (CW), the paper loading clutch is engaged and, until the
carrier sensor on a tray which sits atop a loading tray is turned on, paper is advanced.
2. After the paper turns the carrier sensor on, the paper is forwarded a further fixed length
and touches the carrier roller (this corrects paper skew).
3. The carrier clutch is thrown in and the paper is fed into the main body.
Pinch roller
Carrier roller
Carrier clutch
Carrier sensor
Planet gear
Paper loading clutch
Feed roller
Upper tray
Paper loading sensor
Optional paper loading tray
Pickup roller
Retard roller
Paper loading motor
Figure 2.7
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(3) Paper Loading from Multipurpose Tray (MT)
1. The release lever usually pushes down the hopping plate to a position to turn the micro
SW on (Figure 2.8-a).
2. The running of the motor in the (a) direction drives the MT feed roller, causing the cam to
turn. The cam pushes the release lever and the hopping plate picks up paper sent out by
the MT feed roller (Figure 2.8-b), where the registration roller Assy (B) does not move as
its one-way clutch gear (1) idles.
3. After the front edge of the paper turns the entrance sensor on, the paper is forwarded a
fixed length. The paper stops when its front edge reaches the registration roller Assy (B).
4. Concurrently, the cam pushes down the hopping plate. The release lever that has been
placed in its original position by the spring locks the hopping plate (Figure 2.8-c).
5. Afterthecompletionofthepaperfeedoperation, theregistrationmotorrunsinthedirection
ofthearrow(b)todrivetheregistrationrollerAssy(B),wheretheone-wayclutchgeardoes
not allow the MT feed roller to move.
Oneway clutch gear (2)
MT feed roller
Entrance sensor
Paper
Entrance belt sensor
b
a
Registration roller Assy(B)
Oneway clutch gear (1)
Registration motor
Figure 2.8
Spring
Relerse lever
Hopper plate
Feed roller
Micro SW
Figure 2.8-a
Figure 2.8-b
Figure 2.8-c
41388601TH Rev.2
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(4) Carrier Belt
1. The running of the carrier belt motor in the direction of the arrow (a) drives the carrier belt.
The belt unit sits with one carrier roller immediately below each color’s drum, and the
carrier belt between them. By the application of a fixed voltage, the carrier belt and carrier
roller feed paper on the carrier belt into the fuser unit, transferring a toner image from
each color’s drum.
Drum
Carrier belt
K
Y
M
C
Carrier (transfer) roller
Figure 2.9
Carrier (transfer) belt motor
41388601TH Rev.2
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(5) Driving and Up-and-Down Movements of I/D Unit
1. The I/D unit driving and up-and-down movements are effected by a single-pulse motor.
The running of the main motor in the direction of the arrow (a) turns the lever 1 to the left.
Then, the lever 2 that was lifted by the lever 1 lowers to move down the I/D unit. After the
up-and-down sensor is turned on (Figure 2.10-c), the specified downward pulsing places
the I/D unit in its lowest position (or equivalently, printing position).
The drum gear engages with the driving gear and starts revolving to transfer an image on
the drum to running paper, where the one-way gear idles upon placement of the lever in
its lowest position.
2. With the running of the main motor in the direction of the arrow (b), the lever 1 pushes up
the I/D unit via the lever 2. After the up-and-down sensor is activated (Figure 2.10-d), the
lever 1 lifts the I/D unit to a specified level and stops to keep space to an extent between
the drum and the carrier belt (Figures 2.10-c and 2.10-e).
The drum gear is not engaged with the driving gear and does not revolve.
3. When the two pins of the up-and-down sensor are pushed up by the I/D unit, and touches
and electrically connected to the plate above the pins, the sensor recognizes the on state.
When the two pins are pushed down by the I/D unit, and separated and insulated from the
plate, the sensor recognizes the off state.
The installation of the I/D unit can also be verified by recognizing the off state of the up-
and-down sensor.
I/D unit
Drum
Lever 2
One-way gear
Driving gear
Lever 1
a
b
Figure 2.10-a
Figure 2.10-b
41388601TH Rev.2
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Plate
Pin
Spring
Board
Up-and-down Sensor
Figure 2.10-c
Figure 2.10-d
Figure 2.10-e
41388601TH Rev.2
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(6) Fuser Unit and Paper Ejection
1. A single-pulse motor drives the fuser unit and the eject rollers.
In response to the running of the heat motor in the direction of the arrow (a), the heat roller
turns. This roller fuses a toner image to paper by heat and pressure.
2. At the same time, the four eject rollers move to eject the paper.
3. The paper separator solenoid switches the path back and forth between the route to the
face-up stacker and the route to face-down stacker.
Eject rollers
Fuser unit
Paper separator
Heat rollers
Face-up stacker
a
Fuser motor
Figure 2.11
41388601TH Rev.2
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(7) Duplex Unit
1. When the duplex unit receives an instruction from the printer to print on both sides of a
sheet of paper, the solenoid opens the separator after the completion of one side printing
of a sheet of paper sent from the tray. The path is switched to that to the duplex unit.
At this time, as the roller (1) turns in the direction of the arrow “a,” the paper is retracted
on the rear of the cassette.
2. When fixed time has elapsed after the front edge of the paper passes through the duplex-
in sensor, the rollers reverse and the roller (1) turns in the direction of the arrow “b” to feed
the paper into the duplex unit. After that, the paper passes through the rollers (2), (3) and
(4), and ejected with the other side printed, and fed again into the printer.
Separator
Solenoid
Duplex-in sensor
a
b
Roller(1)
Roller(4)
Roller(3)
Roller(2)
Motor
Figure 2.12
41388601TH Rev.2
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2.5 Sensor
2.5.1 Paper related sensors
Face-down paper eject sensor
Paper eject roller
Face-down sensor
Stacker full sensor
C drum
Entrance belt sensor
M drum
Y drum
K drum
Heat roller
Paper eject sensor
MT feed roller
Pinch roller 2
Driving roller
Pinch roller 1
Driving roller
Carrier belt
Registration roller A
Backup roller
Belt cleaning blade
Registration roller B
Entrance cassette sensor
Entrance MT sensor
Duplex front sensor
Duplex-in sensor
1st feed roller
2nd feed roller
Auxiliary roller
Duplex rear sensor
Duplex roller
Duplex feed roller
Carrier sensor
Sensor
Function
Sensor status
Entrance MT Sensor
Entrance Cassette sensor switching from hopping to carriage.
Detects the beginning of incoming paper to determine the timing for
ON : Paper exists.
OFF: Paper is empty.
Entrance Belt sensor
Paper Eject sensor
Duplex-In sensor
Detects the beginning of transferred paper and, based on the time taken
until the paper front edge reaches the sensor, determines the paper length. OFF: Paper is empty.
ON : Paper exists.
Detects the beginning and end of paper to determine the paper ejection
timing.
ON : Paper exists.
OFF: Paper is empty.
Detects the beginning of paper which enters into the duplex unit to
determine the time taken until the reversed rollers turn in forward direction. OFF: Paper is empty.
ON : Paper exists.
Duplex Rear sensor
Duplex Front sensor
Stacker Full sensor
Detects the beginning of paper after the turns in reverse direction, in the
duplex unit.
ON : Paper exists.
OFF: Paper is empty.
Detects the end of paper after the turns in reverse direction to determine
the paper ejection timing, in the duplex unit.
ON : Paper exists.
OFF: Paper is empty.
Detects the face-down stacker full of paper.
ON : Stacker is full.
OFF: Stacker is empty.
Face-Down Paper Eject
sensor
Detects paper carriage to the paper eject roller to determine the timing for ON : Stacker is full.
job offset operation.
OFF: Stacker is empty.
Face-Down Route sensor Detects the face-down carrier route jammed with paper when it has a
paper jam.
ON : Stacker is full.
OFF: Stacker is empty.
Carrier sensor
Detects paper carriage from the option tray.
ON : Stacker is full.
OFF: Stacker is empty.
41388601TH Rev.2
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2.5.2 Other sensors
1
2
3
4
Paper Empty sensor
This sensor checks whether the paper cassette is empty.
Paper Near sensor
This sensor checks whether the paper cassette is near empty.
MPF Paper Empty sensor
This sensor checks whether the front feeder has paper.
MPF Hopping switch
This microswitch checks whether the front feeder table is in the up position or in the down
position.
5
6
7
8
Stacker Full sensor
This sensor checks whether the stacker is full.
Paper Size switch
This sensor detects the size of paper in the paper cassette.
EP Up/Down sensor (one for each of colors, Y, M, C and K)
This sensor checks whether the I/D unit is in the up position or in the down position.
Toner K, Y, M and C sensors
By measuring the time interval between regular opening movements of each sensor’s lever,
the sensor checks whether its toner cartridge is empty.
9
0
A
B
Temperature sensor
See Section 2.6 (Transfer Control Responds to Environmental Changes)
Humidity sensor
See Section 2.6 (Transfer Control Responds to Environmental Changes)
OHP sensor
This sensor detects the presence or the absence of transparencies.
Alignment sensor
Whencolormisalignmenthasbeencorrected,thissensorreadsthealignmentpatternprinted
at the right and left ends of the transfer belt (see Section 2.13).
41388601TH Rev.2
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2.6 Color Misalignment Correction
C9000 is equipped with multiple LED heads, which can result in color misalignment.
The mechanically induced color misalignment is automatically corrected as follows:
(1) Color alignment to be corrected
1 Color misalignment in X-axis direction (Positional error caused by LED head)
2 Color misalignment in slanting direction (Positional error caused by LED head)
3 Color misalignment in Y-axis direction (Positional error caused by I/D unit and LED head)
(2) Correcting
Printing the preset color misalignment detection pattern on the belt and, by a reflection
sensor, reading the printed pattern detects each color’s misalignment value to determine its
correction value. The correction value is used to change each color’s (Cyan, Magenta and
Yellow) writing timing in comparison with that of Black.
2.7 Transfer Control Responds to Environmental Changes (Room Temperatures and
Relative Humidities)
C9000 measures room temperature and relative humidity using a room temperature sensor and
humidity sensor, and calculates an optimum transfer voltage under its measurement environment
to perform real-time control on printing with the optimum voltage.
41388601TH Rev.2
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2.8 Paper Jam Detection
C9000 detects paper jams after power-on and during printing. When a paper jam occurs, the
printer immediately suspends the printing operation. Opening the cover to remove the jammed
paper and closing it resumes the printing.
LCD Error Code
400
Error
Description
Paper Size Error
The entrance cassette sensor does not turn off within fixed time
after it turns on. Loading of plural sheets of paper is sensed.
Misfeed from Duplex Carrier Assembly Paper could not be loaded from the duplex carrier assembly.
372
390
Misfeed from Multipurpose Tray (MT)
Paper could not be loaded from the MT (the entrance MT
sensor does not turn on within fixed time after the hopping).
Paper could not be loaded from the cassette 1, 2, 3, 4 or 5 (the
entrance cassette sensor does not turn on within fixed time after
the hopping).
Misfeed from Cassette 1, 2, 3, 4 or 5
5-395
4-394
3-393
2-392
1-391
370
Duplex Paper Jam in Reversing
Duplex Unit Entrance Paper Jam
The duplex rear sensor does not turn on during the paper
reversing operation of the duplex unit.
The duplex-in sensor does not turn on during the paper loading
in the duplex unit.
383
Duplex Unit Input Paper Jam
Paper Ejection Jam
The duplex front sensor does not turn on during the operation.
The paper eject sensor does not detect the end of paper within
fixed time after sensing the beginning of it. The paper eject
sensor does not turn off after it turns on.
371
382
Paper Carriage Jam
Loading Jam
The paper eject sensor does not turn on while paper is running
on the belt.
Paper does not reach the entrance belt sensor or the MT sensor
after the completion of the hopping.
381
380
MT Paper Empty
Printing occurs with no paper in the MT.
490
Cassette 1, 2, 3, 4 or 5 Paper Empty
The cassette 1, 2, 3, 4 or 5 has no paper.
5-495
4-494
3-493
2-492
1-491
Entrance belt sensor
Entrance MT sensor
Paper Ejection
Multipurpose Tray
(MT)
Paper Ejection
Paper Carriage
Paper eject sensor
Duplex Input
Misfeed from MT
Duplex Entry
Entrance cassette sensor
Misfeed from Duplex Unit
Misfeed from Cassette 1
Misfeed from Cassette 2
Misfeed from Cassette 3
Misfeed from Cassette 4
Duplex-in sensor
Cassette
1
Duplex front sensor
Duplex rear sensor
Cassette
Cassette
2
3
Duplex Rear Sensor
Misfeed from Cassette 5
Cassette
Cassette
4
5
41388601TH Rev.2
33 /
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2.9 Cover Opening
When the top cover of the printer is open, the cover open microswitch turns opens to cut off the high-
voltage power supply, and outputs which are not less than 32V. At the same time, the CPU receives
CVOPN signals indicating the status of the microswitch and performs cover open operations.
Top cover microswitch
71K-PCB
CPU
+32V
66577
Detection
Circuit
COVOPN (2P)
P10, 5
P7, 6
High-voltage power supply board
HVOLT (16P)
detect
circuit
detect
circuit
FCOVER(3P)
+32V
Front cover
microswitch
Duplex unit
V71-PCB
+32V
Duplex (16P)
41388601TH Rev.2
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2.10 Toner Low Detection
• Structure
This device consists of the stirring gear which revolves at a constant speed, the stirring bar, and
the magnet on the stirring bar. The stirring bar turns in synchronization with the protrusion of
the stirring gear.
Stirring gear
Link
Stirring bar
• Detection
Atonerlowconditionisdetectedbymeasuringthecontacttimebetweenthesensorlevermagnet
and the stirring bar.
Toner low sensor
Sensor lever A
Toner Full Condition
• The stirring bar turns in synchronization with the
stirring gear.
Sensor lever B
• Since the opposite side is in toner, the stirring bar
turns by the force of the stirring gear even when
thestirringmagnetisplacedinitshighestposition.
Toner cartridge
Stirring bar
Toner Low Condition
Toner low sensor
Sensor lever A
• The stirring bar reaches its highest position, then
falls to its lowest position under its own weight
because of the absence of toner resistance on the
opposite side. In this situation, bar-magnet con-
tact time becomes long. By measuring the time,
a toner low condition can be detected.
Sensor lever B
Toner cartridge
Stirring bar
41388601TH Rev.2
35 /
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Toner Full Condition (At warming-up,A4 transverse:16ppm *1)
t1
t1 1.12
TNRSNS
T=2.3
Toner Low Condition (At warming-up,A4 transverse:16ppm *1)
t1
t1 1.12
TNRSNS
T=2.3
•
When the toner low condition is detected 20 consecutive times, toner low is detected.
(The toner low message is displayed when about 1000 A4 sheets at 5% density have been printed
after toner low had been detected.)
The detection is not performed until toner low occurs after the detection of toner low.
When the toner full condition is detected 10 consecutive times, toner low is removed.
When the toner sensor remains unchanged for more than 15 cycles of 2.3 seconds, the toner
sensor alarm is activated.
•
•
•
The toner sensor does not perform the detection while the drum motor is not running.
* 16ppm is the print speed at warm-up. T and t1 change in proportion to the print speed.
41388601TH Rev.2
36 /
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2.11 Paper Size Detection
Via the cam tied to the paper guide of the paper cassette, the four tab pieces are driven according
to the set position of the paper guide.
Upon installation of the paper cassette, the microswitch detects the condition of the tab pieces and
the paper size is recognized.
PSZSW1 PSZSW2 PSZSW3 PSZSW4
Without Cassette
0
0
1
1
0
0
0
1
1
1
1
1
0
0
1
0
0
0
0
0
0
1
1
1
1
1
1
0
0
1
0
1
0
1
1
0
0
0
0
1
1
0
0
1
1
1
0
1
0
1
1
1
1
1
0
0
1
1
0
0
0
0
0
1
A3-Nobi
Tabloid
A3
B4
Regal 14"
Regal 13"
A4 in Portrait Orientation
Letter in Portrait Orientation
Executive
B5 in Portrait Orientation
Letter in Landscape Orientation
A4 in Landscape Orientation
A5
B5 in Landscape Orientation
A6
41388601TH Rev.2
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2.12 Operation at Power-on
2.12.1 Self-diagnostic test
(1) Initial test
The following checks are automatically performed at power-on.
(a) ROM check
(b) RAM check
(c) EEPROM check
(d) Flash ROM check
(2) ROM check
The ROM is checked by calculating a HASH value.
(3) RAM check
(a) Checking is conducted by RAM type. Out-of-specification RAM is judged as an error.
(b) The order of mounted RAMs is checked. Out-of-standard RAM is judged as an error.
(c) The RAM in each slot is checked by read-after-write operation.
(4) EEPROM Check
Specific data stored at the fixed EEPROM address is checked.
(5) Flash ROM Check
The flash ROM format is checked. Unformatted ROM is formatted after the read-after-write
checking.
(6) Option Unit Check
Checking whether the option units (including a HDD, NIC, option trays and the duplex unit)
are equipped with the printer is performed.
41388601TH Rev.2
38 /
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2.13 Color Misalignment Detection
Reflection-type optical sensors (Z71-PCB) are mounted at the right and left ends of the belt,
respectively, in front of the toner scraping (cleaning) blade which is at the back of the belt unit. The
color misalignment detection pattern is printed on the belt at the right and left ends each and, by
reading the patterns by the reflection-type optical sensors, the misalignment amounts are
measured with respect to Black to determine correction values. Then, the misalignment in main-
scanning, sub-scanning and slanting directions is corrected.
These operations are performed at power-on, at cover-close and every 400 pages.
LED head
C
C
M
M
Y
Y
K
K
ID
Transfer
belt
Belt running direction
Color alignment sensors L and R
Cleaning blade
Transfer Belt
Color alignment sensor R
Belt running direction
Color alignment sensor L
(Bottom View)
Cleaning blade
41388601TH Rev.2
39 /
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2.14 Version Read of Periodically Replaced Units
The condition (new or used) of the I/D, fuser unit and belt unit are determined by an internal fuse
within the units. When the unit is powered on or the upper cover is opened and closed, the
printer scans for consumables fuses. If a conducting fuse is found, that unit's counter is reset
and the fuse is opened. The life counters of the consumables are checked at each power on
and each closing of the upper cover. Once a fuse is opened the consumable is judged used.
2.15 Life Counter for Replaceable Units
Each life of the periodically replaced units - I/D, fuse unit and belt unit is counted as shown in the
following table:
Unit Name
Condition
Action
I/D
The number of drum revolutions is counted in the unit of letter
paper length + paper interval in continuous printing.
End of Life: Time when a distance equivalent to pages of 26K is
printed (on 3P/J).
Warning (the unit can still be used).
Toner Cartridge The number of dots printed is counted. The used amount is
determined based on the counter value (See Section 2.16).
End of Life: Time when a toner-low error occurs.
Do not use the unit anymore.
Belt Unit
The number of turns revolutions is counted in the unit of letter
paper length + paper interval in continuous printing.
End of Life: Time when the counter value reaches 80K.
Warning (the unit can still be used).
Warning (the unit can still be used).
Fuser Unit
One is counted every time when one page is passed.
End of Life: Time when the counter value reaches 80K.
2.16 Toner Consumption Detection
The used toner amount is detected by counting the number of dots printed.
The counting starts after toner-low is released. The sum of the counted values is stored in
EEPROM. When toner-low is detected, the amount used is forcedly set to 7%.
When the equivalent of pages of 1K on A4 and 5% duty is reached after that, toner-empty is
detected.
41388601TH Rev.2
40 /
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3.
PARTS REPLACEMENT
This section describes the procedure for replacing the parts, assemblies and units in the field. The
replacing procedure is given for detachment. To attach, use the reverse procedure.
3.1 Precautions in Replacing Parts
(1) Before replacing the parts, be sure to remove the AC cable and the interface cable.
(a) To remove the AC cable, always use the following procedure.
1 Flip the power switch of the printer off (to “O”).
2 Pull the AC inlet plug of the AC cable out of the AC receptable.
3 Remove the AC cable and the interface cable from the printer.
(b) To connect the printer again, always use the following procedure.
1 Connect the AC cable and the interface cable to the printer.
2 Insert the AC inlet plug into the AC receptacle.
3 Flip the power switch of the printer on (to “I”).
Disconnect
Connect
(2) Do not disassemble the printer so long as it operates properly.
(3) Minimize the disassembly. Do not detach parts other than those shown in the replacing
procedure.
(4) For maintenance applications, use designated tools.
(5) Follow the order instructed to disassemble the printer. Incorrect order may damage the
parts.
(6) Small parts such as screws and collars tend to get lost, so temporarily replace them in
their original positions.
(7) When handling ICs and circuit boards such as microprocessors, ROMs and RAMs, do not
use gloves that are likely to have static.
(8) Do not place the printed circuit boards directly on the printer or the floor.
41388601TH Rev.2
41 /
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[Maintenance Tools]
Table 3-1 lists tools necessary to replace the units.
Table 3-1 Maintenance Tools
No.
1
Service Tools
Q' ty
1
Place of use
Remarks
No. 1-100 Philips
screwdriver
2~2.5 mm screws
2
3
4
5
6
No. 2-200 Philips
screwdriver, Magnetized
1
1
1
3~5 mm screws
No. 3-100 screwdriver
No. 5-200 screwdriver
Digital multimeter
Pliers
1
1
Handy cleaner
7
8
1
1
Cleans LED head
LED Head cleaner
P/N 4PB4083-2248P001
9
1
High voltage probe
41388601TH Rev.2
42 /
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3.2 Parts Layout
Figure 3.1
41388601TH Rev.2
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[Top Cover Assy]
Figure 3.2
41388601TH Rev.2
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[Printer Unit-1/2]
Figure 3.3
41388601TH Rev.2
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[Printer Unit-2/2]
Figure 3.4
41388601TH Rev.2
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[Cassette Guide Assy (L), (R)]
Figure 3.5
41388601TH Rev.2
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41388601TH Rev.2
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[Duplex Unit]
D
C
B
A
D
C
E
B
E
A
Figure 3.6
41388601TH Rev.2
49 /
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3.3 Replacing Parts
This section describes how to replace the parts and assemblies illustrated below.
41531301 41515110
Print Engine Controller PWB (3.3.22)
41502304 × 4
LED Assy (3.3.2)
40737401
Power-Unit AC-DC Switching (115V) (3.3.34)
40737501
Power-Unit AC-DC Switching (230V) (3.3.34)
40737601
HV Power Supply (3.3.35)
41531402, 41531404
Fuser Unit (3.3.37)
41531502
Belt Unit (3.3.38)
41178202
Duplex Unit (3.3.39)
41483102
Printer Chassis (3.3.23)
41483202
41480901
Printer NIP
41483001
Printer Unit
40841302
Fuser Latching Handle (L) (3.3.29)
41628301
Regist Roller Assy (A) (3.3.15)
41483301
Fuser Latching Handle Spring (3.3.29)
40841601
Regist Roller Assy (B) (3.3.16)
41483401
Entrance Sensor Actuator #1 (3.3.24)
41578501
Registration Motor Assy (3.3.17)
41187101
Entrance Sensor Actuator #2 (3.3.26)
40841801
Registration Clutch (3.3.17)
41486601
Entrance Sensor Actuator #3 (3.3.26)
41621801
Duplex Guide Assy (3.3.20)
Registration Shutter Solenoid Assy
41488801
Registration Shutter
41589401
Registration Shutter Spring
41641701
Fuser Driver Gear-A (3.3.27)
41095901
41481001
Unit-Lower-Frame (3.3.36)
41481301
Main Feed Assy (3.3.36)
41515801
PCE-Size Sence (3.3.36)
22011000P0140
IMSA-9714N-14A (3.3.36)
41500101
Insurator
41483701
Main Cooling Fan Assy (3.3.18)
2381018P0001
HV Tape Harness
Fuser Exit Roller (3.3.27)
4PP4043-4489P001
Fuser Exit Roller Bushing (L) (3.3.27)
4PP4076-3949P001
Fuser Exit Roller Bushing (R) (3.3.27)
41189701 × 4
41490702
Electrical Chassis Cooling Fan
41484101
Electrical Chassis (3.3.21)
41483801
Main Motor Assy (3.3.32)
41483902
Drum Contact Assy (3.3.14)
41258301
40841402
Fuser Latching Handle (R) (3.3.31)
41628301
Belt Motor Assy (3.3.30)
Entrance Sensor PWB (3.3.25)
41491001
Color Registration Sensor Assy (3.3.19)
41073601
Fuser Latching Handle Spring (3.3.31)
40850201
41489001
Exit Sensor Assy (3.3.28)
41483701
Contact Assy (3.3.33)
Plate Assy-Side (3.3.33)
41493002
Main Motor FAN Assy (3.3.27)
Multipurpose Tray (3.3.13)
41276502
Rear Cover (3.3.12)
41277402
Left Side Cover (3.3.9)
41481202
Right Side Cover (3.3.7)
41276402
Front Cover (3.3.11)
41277502
Face Up Tray (3.3.10)
41504401
Top Cover
40861001 × 8
LED Assy Spring (3.3.2)
41257902
41484402
Top cover (3.3.1)
40866212
LED Control PWB (Y71) (3.3.4)
41349801
Control panel Bezel (3.3.4)
Stack Full Sensor (3.3.4)
41349301 × 4
Eject Roller (3.3.4)
41484501
41493002
Multipurpose Tray Assy (3.3.13)
41045802 × 2
Link (3.3.13)
Control Panel Assy (3.3.4)
2381005P0015
41486202
MT Tray Cover Assy (3.3.13)
41278002
MT Top Cover (3.3.13)
40325101
Control Panel Tape Harness (3.3.4)
41514101
LED Harness K
41514102
LED Harness Y
41514103
LED Harness M
41514104
LED Harness C
41328402
41484902
Cassette Assy (3.3.7)
41277902
Cover-Blind (3.3.7)
41481701
Feed-Roller (3.3.8)
40863801
MT Drive Gear (3.3.13)
Plate-Side (3.3.21)
Top Cover Handle (3.3.5)
41277602
Top Cover Latch (3.3.5)
40861401 × 2
Top Cover Latch Spring (3.3.5)
41484701
Eject Guide Assy (3.3.6)
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3.3.1 Top cover
(1) Open the top cover Assy.
(2) Remove the nine screws 1 to detach the top cover 2.
2
1
1
1
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3.3.2 LED Assy/ LED Assy spring
(1) Open the top cove 1.
(2) Remove the three cables, and unhook the LED Assy 2 at the two places to demount it (The
two springs 3 become detached together with the LED Assy 2).
(3) Detach the LED connector 4.
When assembling, attach the LED connector 4 to the LED head and insert the flat cable.
1
3
4
3
4
2
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3.3.3 Top cover unit
(1) Remove the top cover (see section 3.3.1).
(2) Remove the rear cover (see section 3.3.12).
(3) Remove the front cover (see section 3.3.11).
(4) Remove the electrical chassis (see section 3.3.21).
(5) Unscrew the screws 1 and 2 to remove the limiters (F) 3 and (R) 4.
(6) Remove the inner shaft 5, then the top cover unit 8 (The inner springs 6 and 7 become
detached).
8
2
7
1
5
4
6
2
1
3
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3.3.4 Control panel Assy/ Control panel bezel/ LED control PWB/ Toner sensor/ Stack full sensor/
Control panel tape harness/ Eject roller
(1) Detach the control panel bezel 1.
(2) Remove the screws 2 to demount the control panel 3.
(3) Detach the control panel tape harness 4.
(4) Remove the screws 6, unhook the connector 7 and demount the LED control PWB 8.
(5) Unscrew the screws 9 to remove the plate 0.
(6) Disengage the claw to demount the toner sensor A.
(7) Demount the stacker full sensor B.
(8) Unscrew the eject sensor bracket C, D.
1
2
6
2
7
3
4
8
C
B
D
A
9
9
0
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3.3.5 Top cover handle/ Top cover latch/ Top cover latch spring
(1) Remove the two screws 1 to detach the top cover handle 2 and disengage the top cover
latch 3 (The two top cover latch springs 4 become detached).
1
3
2
4
1
4
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3.3.6 Eject guide Assy
(1) Remove the seven screws 1 to detach the eject guide Assy 2.
1
1
2
1
1
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3.3.7 Cassette Assy/ Blind cover/ Side cover R Assy
(1) Detach the cassette Assy 1.
(2) Disengage the blind cover 2 at the two places to detach it.
(3) Unscrew the two screws to remove the stopper 4.
(4) Disengage the claw on the left support of the side cover R to detach the side cover R.
4
5
5
2
1
3
5
5
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3.3.8 Feed rollers
(1) Remove the cassette.
(2) Unlatch and demount the feed rollers 1.
1
1
1
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3.3.9 Left side cover
(1) Remove the four screws 1 to detach the left side cover 2.
2
1
1
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3.3.10 Face-up tray
(1) Open the face-up tray in the arrow direction and move the links 2 out of engagement (at two
places each of the links) to detach the face-up tray 1.
2
1
2
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3.3.11 Front cover
(1) Open the top cover 1.
(2) Disengage the claws and remove the blind cover 2.
(3) Unscrew the six screws 4 to detach the front cover 3.
1
4
4
4
4
3
4
2
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3.3.12 Rear cover
(1) Open the top cover 1,
(2) Remove the five screws 3 and 4 to detach the rear cover 2.
4
3
3
1
2
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3.3.13 Multipurpose tray Assy/ Multipurpose tray cover Assy/ Links/ Multipurpose tray top cover/
Multipurpose tray drive gear
(1) Remove the rear cover (see section 3.3.12).
(2) Remove the front cover (see section 3.3.11).
(3) Unscrew the three screws 1 to detach the multipurpose tray top cover 2.
(4) Unscrew the two screws 3 and remove the connector to detach the multipurpose tray 4.
(5) Disengage 4 and 5 to detach the multipurpose tray cover Assy 5 (the links 7 become
detached).
(6) Unhook and detach the multipurpose tray drive gear 8.
1
8
2
1
4
6
5
3
8
Engagement
6
5
3
Engagement
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3.3.14 Drum contact Assys
(1) Insert a flatblade screwdriver between the printer case and the drum contact Assy 1 to
demount the drum contact Assy.
1
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3.3.15 Registration roller Assy (A)/ Registration drive gear (A)
(1) Remove the front cover (see section 3.3.11).
(2) Remove the rear cover (see section 3.3.12).
(3) Remove the multipurpose tray (see section 3.3.13).
(4) Unscrew the four screws 1 to demount the registration roller Assy (A) 2.
(5) Remove the E ring 3 to detach the registration gear (A) 4.
1
3
4
2
1
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3.3.16 Registration roller Assy (B)
(1) Remove the cassette Assy.
(2) Remove the front cover (see section 3.3.11).
(3) Remove the rear cover (see section 3.3.12).
(4) Remove the electrical chassis (see section 3.3.21).
(5) Remove the registration clutch (see section 3.3.17).
(6) Remove the printer chassis (see section 3.3.23).
(7) Unscrew the four screws and pull out the registration Assy (B) 2 in the arrow direction.
1
2
1
1
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3.3.17 Registration clutch, Registration motor Assy
(1) Remove the left side cover (see section 3.3.9).
(2) Remove the electrical chassis (see section 3.3.21).
(3) Remove the connector and the E ring 1, then screws 3 and 4, and then the earth plate 5.
(4) Removetheconnectorandunscrewthetwoscrews6todemounttheregistrationmotorAssy
7.
6
3
7
5
4
6
2
1
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3.3.18 Cooling fan
(1) Unhook the connector 1, and remove the screws 2 and the cooling fan 3.
1
2
3
air direction
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3.3.19 Color registration sensor Assy
(1) Remove the two screws 1 and the three connectors to demount the color registration sensor
Assy 2.
(2) Remove the earth plate B 3.
1
1
2
1
3
2
4
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3.3.20 Duplex guide Assy
(1) Unlatch and demount the duplex guide Assy 1.
(2) Remove the springs 2.
1
2
2
Main chassis (L side)
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3.3.21 Electrical chassis/ Electrical chassis cooling fan
(1) Unscrew the five screws 1 and two screws 2 to remove the plate A 3.
(2) Unscrew the thirty-one screws 4 to remove the shield plate B 5.
(3) Remove the printer engine controller PWB (see section 3.3.22).
(4) Unscrew the eleven screws 6 to detach the electrical chassis 7.
(5) Unscrew the two screws 8 to demount the electrical chassis cooling fan 9.
1
1
3
2
1
6
6
7
4
6
9
air direction
8
6
6
5
4
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3.3.22 Printer engine controller PWB
(1) Remove the rear cover (see section 3.3.12).
(2) Remove the electrical chassis and the electrical cooling fan (see section 3.3.21).
(3) Remove the five screws 1 and all the connectors to demount the printer engine controller
PWB 2.
2
1
1
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3.3.23 Printer unit chassis
(1) Unscrew the screw 1 and remove the AC switch Assy 2.
(2) Remove the four black screws 3 and six screws 4 to detach the printer unit chassis 5.
3
4
3
4
4
4
2
3
3
1
4
3
5
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3.3.24 Entrance cassette sensor actuator
(1) Remove the printer unit chassis (see section 3.3.23).
(2) Turn over the main chassis.
(3) Remove the two clamps with tweezers to demount the entrance cassette sensor actuator 1.
1
Main chassis
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3.3.25 Entrance sensor PWB
(1) Remove the registration roller Assy (B) (see section 3.3.16).
(2) Remove the two screws 1 to demount the entrance sensor PWB 2.
1
2
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3.3.26 Entrance MT sensor actuator and Entrance belt sensor actuator
(1) Remove the entrance sensor PWB (R71) (see section 3.3.25).
(2) Unlatch and detach the entrance MT sensor actuator 1.
(3) Unlatch and detach the entrance belt actuator 2.
2
1
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3.3.27 Main motor fan/ Fuser eject roller
(1) Unscrew the two screws 1 to remove the fan Assy 2.
(2) Unscrew the fuser eject roller contact 4.
(3) Remove the fuser drive gear 5.
(4) Unscrew the fuser drive gear Assy 8.
(5) Remove the screws and washers 0 to demount the fan A.
(6) Unlatch and detach the fuser eject roller bearing (L) B and fuser eject roller C.
9
0
A
C
9
0
B
8
5
4
2
3
7
1
1
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3.3.28 Eject sensor Assy
(1) Remove the fuser eject roller (see section 3.3.27).
(2) Remove the screw 1 and connector 2 to demount the (red/blue) eject sensor Assy 2.
1
2
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3.3.29 Fuser latching handle (L)
(1) Remove the latching handle spring 1.
(2) Unscrew the fuser latching handle (L) 3.
3
1
2
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3.3.30 Belt motor Assy
(1) Remove the fuser latching handle (R) (see section 3.3.32).
(2) Unscrew the two screws 1 to detach the two connector 2.
(3) Demount the belt motor Assy 3.
1
1
3
2
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3.3.31 Fuser latching handle (R)
(1) Remove the printer unit chassis (see section 3.3.23).
(2) Remove the E ring 1.
(3) Remove the fuser latching handle spring 2 to detach the fuser latching handle (R) 3.
3
1
2
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3.3.32 Main motor Assy
(1) Remove the belt motor Assy (see section 3.3.30).
(2) Remove all the connectors.
(3) Remove the two screws 1 to demount the main motor Assy 2.
1
1
2
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3.3.33 Contact Assy/ Side plate Assy
(1) Remove the printer unit chassis (see section 3.3.23).
(2) Remove the four screws 1 to detach the side plate Assy 2.
(3) Remove the three screws 3 to detach the contact Assy 4.
3
2
1
4
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3.3.34 Low voltage power supply
(1) Remove the printer unit chassis (see section 3.3.23).
(2) Unhook the connector 1.
(3) Remove the eight screws 2 to demount the low voltage power supply 5.
2
8
7
1
6
3
2
5
2
0
0
0
B
A
9
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3.3.35 High voltage power supply
(1) Remove the contact Assy (see section 3.3.33).
(2) Unhook the connector of the high voltage power supply 2.
(3) Remove the two screws 1 to detach the high voltage power supply 2 and the tape harness
3.
1
3
1
2
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3.3.36 Main feed Assy
(1) Remove the printer unit chassis (see section 3.3.23).
(2) Remove the low voltage power supply and high voltage power supply (see sections 3.3.34
and 3.3.35).
(3) Unscrew the five screws 1 to remove the lower plate 2.
(4) Unscrew the six screws 3 to demount the main feed Assy 4.
(5) Unscrew the screws 5 to detach the cable and then the PCB size board 6.
(6) Unscrew the screw 7 to detach the duplex connector 8.
(7) Unscrew the screws 9 to detach the second tray connector 0.
1
1
2
8
7
6
5
0
4
9
3
3
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3.3.37 Fuser unit
(1) Open the top cover 1.
(2) Push the right and left fuser levers (blue) 2 in the arrow direction to detach the fuser unit 3.
3
2
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3.3.38 Belt unit
(1) Open the top cover 1.
(2) Remove the I/D unit.
(3) Push the lever (blue) 2 in the arrow direction, raise the handle (blue) and detach the belt unit
3.
3
1
2
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3.3.39 Duplex unit
(1) Remove the cassette Assy, the front cover and the front cover inner buffle.
(2) Unlatch the rear at the right and left and pull the duplex unit 1 toward the front.
4
5
2
3
1
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3.3.40 CU Assy
(1) Pulling out Control Board
1. Loosen the two screws 1.
2. Pull the control board 2 out.
3. Place the control board 2 on a flat table.
(2) Detaching Fan
1. Remove the connector 3.
2. Remove the two screws 4.
3. Detach the fan 5.
1
2
1
4
5
3
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(3) Demounting CRM Board
1. Remove the three screws 6 to detach the fan bracket 7.
2. Remove the four screws 8 to detach the plate support 9 and the guide rail 0.
3. Remove the two screws A to detach the guide rail B.
4. Remove the two screws C and three screws D, then demount the CRM board E.
6
7
8
6
9
A
E
8
D
0
9
8
D
B
8
A
0
C
8
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4.
ADJUSTMENT
Adjustments are carried out by key operations on the operator panel.
The maintenance menu is included in the general menu of this printer. Choose the maintenance
menu for adjustment.
4.1 Maintenance Menu and Its Functions
The general menu has the category, MAINTENANCE MENU.
The items adjustable in this menu are shown below.
Maintenance Menu
DF
*
Category
Item(1st Line)
Functions
Value(2nd Line)
MAINTENANCE MENU Power Save Mode
Sets the Power Save Mode
Enabled
Disabled
enabled/disabled. The shift time to
enable the Power Save mode can
be changed according to the
POWER SAVE SHIFT TIME item of
SYSTEM CONFIG MENU.
Normal Paper Black
Setting
Implements fine adjustment of
BLACK printing on normal paper
when unclear characters or spots
are often found on print results.
With dispersed or snowed printing
in the part at high-density, decrease
the value. With unclear printing,
increase the value.
0
*
*
*
*
+1
+2
-2
-1
Normal Paper Color
Setting
Implements fine adjustment of
COLOR printing on normal paper
when unclear characters or spots
are often found on the print result.
With dispersed or snowed printing
in the part at high-density, decrease
the value. With unclear printing,
increase the value.
0
+1
+2
-2
-1
Transparency Black
Setting
Implements fine adjustment of
BLACK printing on Transparency
when unclear characters or spots
are often found on the print result.
With dispersed or snowed printing
in the part at high-density, decrease
the value. With unclear printing,
increase the value.
0
+1
+2
-2
-1
Transparency Color
Setting
Implements fine adjustment of
COLOR printing on Transparency
when unclear characters or spots
are often found on the print result.
With dispersed or snowed printing
in the part at high-density, decrease
the value. With unclear printing,
increase the value.
0
+1
+2
-2
-1
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4.2 Short Plug Settings
The CRM board has five short plugs that can be set as follows:
Short Plug (WE1,3, 5 and 7)
Sets flash ROM DIMM to connect WE signals.
(1-2 Short: Disconnects WE signals; 2-3 Short: Connects WE signals.)
The factory-shipped short plug is set to the 2-3 short: Re-programmable the Flash ROM DIMM.
Short Plug (DIMM2)
Sets the banks of ROM DIMM Slot B.
(1-2 Short: For 1-Bank DIMM; 2-3 Short: For 2-Bank DIMM)
1-bank DIMM (dual-sided 1 bank) is only a prototype and does not exist in production-run
printers.
4.3 Printing Singly Using Controller-Equipped Printer
Menu Map Printing
Prints the program versions, controller block, and other printer configuration and settings.
Operation: (Press of Switch)
Without HDD: “0” → “3” → “3”
With HDD: “0” → “0” → “3” → “3”
File List Printing
Prints a list of files stored on a HDD or in ROM.
Operation: (Press of Switch)
Without HDD: “0” → “3” → “1” → “3”
With HDD: “0” → “0” → “3” → “1” → “3”
Font List Printing (PCL)
Prints a list of PCL fonts.
Operation: (Press of Switch)
Without HDD: “0” → “3” → “1” → “1” → “3”
With HDD: “0” → “0” → “3” → “1” → “1” → “3”
Font List Printing (PS)
Prints a list of PS fonts.
Operation: (Press of Switch)
Without HDD: “0” → “3” → “1” → “1” → “1” → “3”
With HDD: “0” → “0” → “3” → “1” → “1” → “1” → “3”
Demo Printing
Prints the demo patterns for destinations.
Operation: (Press of Switch)
Without HDD: “0” → “3” → “1” → “1” → “1” → “1” → “3”
With HDD: “0” → “0” → “3” → “1” → “1” → “1” → “1” → “3”
Ethernet Board Self-Diagnostic Printing
When equipped with an Ethernet board, the printer runs diagnostic checks on itself by holding
the SW on the Ethernet board down for two seconds or more, and prints the results.
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4.4 Adjustment after Part Replacement
Adjustment to be implemented after each part replacement is described below.
Adjustment and correction of color registration are always required for each part replacement.
Replaced Part
LED Head
Adjustment
Color balance adjustment
Not required.
Drum Cartridge (Y, M, C, K)
Fuser Unit
Not required.
Belt Cassette Assy
PU (K73 Board)
Not required.
Re-mounting the EEPROM used prior to the replacement *Note
*Note: When the EEPROM of the PU (K73 Board) is replaced to a new one, color balance must be
adjusted.
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4.5 Color Balance Adjustment
Color balance has been adjusted appropriately when a printer is shipped from the plant. However,
it may be out of the appropriate balance during use. In such a case, color balance should be
modified.
Note: Density of each color depends on each other. Therefore, adjustment must be repeated
several times to reach the correct color balance.
(1) Set letter paper in the tray specified on the operator panel.
(2) Press ) several times to display [COLOR MENU].
(3) Press 1 or 5 to display [COLOR BALANCE CORRECTION/PATTERN PRINT].
(4) Press 3 to start test printing.
(5) Press 1 to display [COLOR BALANCE CORRECTION/RESET].
(6) Choose the number of the color closest to the [(] part on the test pattern.
If the selected color is [00], the color balance is correct and no adjustment is required.
If it is not [00], the color balance should be adjusted in the procedures below.
(7) Press 2 or 6 several times to display the value selected in Step (6).
(8) Press 3 to start test printing.
(9) Repeat the steps (6)~(8) to approximate the color at the [(] part on the test pattern to [00]
as much as possible.
(10) Press 4 to display [ON LINE].
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4.6 EEPROM Replacement after CRM Board and K73 Board Replacement
When replacing the CRM Board or K73 Board, the EEPROM must be removed and re-mounted
on the new board (to deliver the user setting and font installation information to the new board).
If the EEPROM used by the user is broken and not suitable for further use, the EEPROM on the
new board may be used.
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5.
REGULAR MAINTENANCE
5.1 Consumables to be Regulary Replaced
It is recommended that a user should replace the consumables below according to the
replacement standard. (If not replaced, print quality is not assured or it may result in a failure.)
Part Name
Large-capacity When the message “Toner Low” After 15,000 copies have Replace the Toner cartridge.
Toner Cartridge is displayed. been printed.
Time for Replacement
Replacement Condition Adjustment after Replacement
ID Cartridge
Fuser Unit
Belt Unit
When the message “Drum Life” After 26,000 copies have Reset the drum counter
is displayed. been printed. (at 3P/J) after drum replacement.
When the message “Fuser Life” After 80,000 copies have Reset the fuser counter.
is displayed. been printed.
When the message “Belt Life” is After 80,000 copies have Reset the belt counter.
displayed. been printed. (at 3P/J)
The above consumables replacement may be performed by a user.
5.2 Cleaning
Theinsideandoutsideofthisprintershouldbecleanedwithahandvacuumcleaner,ifnecessary.
Note: Do not touch the Image drum terminal, LED lens array and LED head connectors.
5.3 Cleaning of LED Lens Array
When a longitudinal white band or stripes (that is, void or light printing) appear on a printed paper
surface, the LED lens array should be cleaned.
Note: The LED head cleaner must be used to clean the LED lens array. (The LED head cleaner
is included in the Toner cartridge box.)
White band, white stripes
(Void or light printing)
5.4 Cleaning of Pick-up Roller
When papers are not fed normally, the Pick-up roller should be cleaned.
Note: Clean it with a soft cloth and alcohol. Be cautious not to damage the roller surface.
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6.
TROUBLESHOOTING PROCEDURES
6.1 Tips for Troubleshooting
(1) Check the basic check points covered in the user’s manual.
(2) Gather as much information on the problem from the customer as possible.
(3) Perform inspections in conditions close to those in which the problem had occurred.
6.2 Check Points before Correcting Image Problems
(1) Is the printer being run in proper ambient conditions?
(2) Have the consumables toner and image drum cartridges been replaced properly?
(3) Is the paper normal? See paper specifications section.
(4) Has the image drum cartridge been loaded properly?
6.3 Tips for Correcting Image Problems
(1) Do not touch, or bring foreign matter into contact with the image drum surface.
(2) Do not expose the image drum to direct sunlight.
(3) Keep hands off the fuser unit as it is heated during operation.
(4) Do not expose the image drum to light for longer than 3 minutes at room temperature.
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6.4 Preparation for Troubleshooting
(1) Operator panel display
The failure status of this printer is indicated on the LCD (liquid crystal display) of the Operator
panel.
Take the proper corrective action according to the message displayed on the LCD.
6.5 Troubleshooting Flow
If a problem should develop in this printer, troubleshoot in the following procedure.
Problem
Problem that results
in LCD message
indication
Troubleshoot based on the
LED message list.
See 6.5.1.
Perform troubleshooting
with the troubleshooting
flow chart. See 6.5.2.
Image problem
Perform troubleshooting
with the troubleshooting
flow chart. See 6.5.3.
(and a problem that
does not result in LCD
message indication.)
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6.5.1 LCD Message List
The printer indicates a Service Call Error message on the LCD as shown below, detecting an
unrecoverable error.
Service Call
nnn : Error
Note: nnn is an error code.
When the Service Call message is displayed, the error information corresponding to the error code
appears on the lower line of the LCD. The meaning and solutions of each error code are listed in
the Table 6-1-1.
Table 6-1-1 Operator Alarms (1/5)
Message
Cause
Error Description
Solutions
Service Call CPU Exception
001: Error
~
Is the error message displayed again?
Is the error message displayed again?
Yes Turn the printer off/on.
Replace the CRM board.
Yes
(The EEPROM needs replacement.)
011: Error
Service Call CU ROM Hash
Is the program ROM DIMM installed
properly?
No Re-install the program ROM DIMM.
020: Error
Check Error 1
Can the printer recover from the error by
replacing the program ROM DIMM?
Yes Replace the program ROM DIMM.
No Replace the CRM board.
(The EEPROM needs replacement.)
Service Call CU Slot1 DIMM
030: Error
Is the concerned RAM DIMM installed
properly?
Can the printer recover from the error by
replacing the RAM DIMM?
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
No Replace the CRM board.
RAM Check Error
(The EEPROM needs replacement.)
Service Call CU Slot2 DIMM
031: Error
Is the concerned RAM DIMM installed
properly?
Can the printer recover from the error by
replacing the RAM DIMM?
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
No Replace the CRM board.
RAM Check Error
(The EEPROM needs replacement.)
Service Call CU Slot3 DIMM
032: Error
Is the concerned RAM DIMM installed
properly?
Can the printer recover from the error by
replacing the RAM DIMM?
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
No Replace the CRM board.
RAM Check Error
(The EEPROM needs replacement.)
Service Call CU Slot4 DIMM
033: Error
Is the concerned RAM DIMM installed
properly?
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
RAM Check Error
Can the printer recover from the error by
replacing the RAM DIMM?
No Replace the CRM board.
(The EEPROM needs replacement.)
Service Call RAM Configuration
Is the installation order followed?
No Correct the installation order.
Yes Replace the RAM DIMMs.
No Replace the CRM board.
(The EEPROM needs replacement.)
034: Error
Error.
The CU RAM
installation or
derwas not followed.
Can the printer recover from the error by
replacing the RAM DIMMs?
Service Call Slot1 RAM Spec Error. Is the RAM DIMM a genuine part?
No Use a genuine RAM DIMM.
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
035: Error
Is the concerned RAM DIMM installed
The CU RAM Slot1
DIMM specification
is not supported.
properly?
Can the printer recover from the error by
replacing the RAM DIMM?
No Replace the CRM board.
(The EEPROM needs replacement.)
Service Call Slot2 RAM Spec Error. Is the RAM DIMM a genuine part?
No Use a genuine RAM DIMM.
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
036: Error
Is the concerned RAM DIMM installed
The CU RAM Slot2
DIMM specification
is not supported.
properly?
Can the printer recover from the error by
replacing the RAM DIMM?
No Replace the CRM board.
(The EEPROM needs replacement.)
Slot3 RAM Spec Error. Is the RAM DIMM a genuine part?
No Use a genuine RAM DIMM.
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
Service Call
037: Error
Is the concerned RAM DIMM installed
properly?
The CU RAM Slot3
DIMM specification
is notsupported.
Can the printer recover from the error by
replacing the RAM DIMM?
No Replace the CRM board.
(The EEPROM needs replacement.)
Is the RAM DIMM a genuine part?
Is the concerned RAM DIMM installed
properly?
Can the printer recover from the error by
replacing the RAM DIMM?
No Use a genuine RAM DIMM.
No Re-install the concerned RAM DIMM.
Yes Replace the RAM DIMM.
Service Call
038: Error
Slot4 RAM Spec Error.
The CU RAM Slot4
DIMM specification
is notsupported.
No Replace the CRM board.
(The EEPROM needs replacement.)
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Table 6-1-1 Operator Alarms (2/5)
Error Description
Message
Cause
Solutions
CU EEPROM Error
Service Call
040: Error
Can the printer recover from the error by
replacing the EEPROM on the CU board?
Yes Replace the EEPROM. (Settings of the
user must be restored on the new.)
No Replace the CRM board.
(The EEPROM needs replacement.)
U Flash Error.
On-CU-board Flash
ROM Error
Service Call
041: Error
Does the error message appear again?
Does the error message appear again?
Yes Replace the CRM board.
(The EEPROM needs replacement.)
Operator Panel Error
Service Call
050: Error
Yes See the flowchart for the problems with
no LCD message displayed.
CU Fan Error.
Service Call
051: Error
Is the on-CU-board connector connected
properly?
No Connect the connector properly.
On-CU-board CPU
Cooling Fan
Problem
Can the printer recover from the error by
replacing the fan?
Yes Replace the fan.
No Replace the CRM board.
(The EEPROM needs replacement.)
Network Comm.Error.
CU ~ NIC H/W I/F
Problem
Service Call
063: Error
Is the network board installed properly?
No Install the network board properly.
Yes Replace the network board.
Can the printer recover from the error by
replacing the network board?
No Replace the CRM board.
(The EEPROM needs replacement.)
CANT_HAPPEN.
PS F/W Problem
Detection
Service Call
070: Error
Is it recovered by turning the printer off/on.
No Replace the CRM board.
(The EEPROM needs replacement.)
Engine Communication
Error
Service Call
072: Error
Is the CU Assy installed properly?
No Install the CU Assy properly.
Can the printer recover from the error by
replacing the CRM board?
Yes Replace the CRM board.
PU ~ CU I/F Error
(The EEPROM needs replacement.)
No Replace the PU board.
Video Overrun
Detect
Service Call
073: Error
~
Is the CU Assy installed properly?
No Install the CU Assy properly.
Can the printer recover from the error by
replacing the CRM board?
Yes Replace the CRM board.
(The EEPROM needs replacement.)
075: Error
Error detected at Engine
ROM Checksum when
turned on.
Service Call
Does the error repeat?
Does the error repeat?
Does the error repeat?
Does the error repeat?
No EEPROM?
No Replace the PU board.
100/100:Error
Yes Replace the engine control board (K73).
Error detected at Engine
RAM Read/Write when
turned on.
Service Call
102: Error
Yes Replace the engine control board (K73).
Yes Replace the engine control board (K73).
Yes Replace the engine control board (K73).
Error detected at Engine
SRAM Read/Write when
turned on.
Service Call
103: Error
Error detected at Engine
EEPROM Checksum
when turned on.
Service Call
104: Error
EEPROM not detected
when turned on.
Service Call
105: Error
Yes Confirm the existence of EEPROM.
Without it, mount an EEPROM.
Does the error repeat?
Does the error repeat?
Yes Replace the engine control board (K73).
Yes Replace the engine control board (K73).
Error detected at Engine
Control Logic.
Service Call
106: Error
Service Call Error detected at the
1) Is the error message displayed?
Yes Turn off/on the printer.
120: Error
~
122: Error
Power unit cooling fan in
the Controller cavity.
Yes
Yes
2) Does the error repeat?
Replace the Fan motor.
Turn off/on the printer.
Service Call Inappropriate ambient
1) Is the error message displayed?
123: Error
RH detected by a
sensor.
2) Does the error repeat?
Yes Replace the RH sensor.
Turn off/on the printer.
Yes
Service Call
124: Error
1) Is the error message displayed?
Inappropriate ambient
temp. detected by a
sensor.
2) Does the error repeat?
Yes Replace the temperature sensor.
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Table 6-1-1 Operator Alarms (3/5)
Error Description
Message
Cause
Solutions
Yes Turn off/on the printer.
Service Call Error detected at the
125: Error MT home position.
1) Is the error message displayed?
2) Does the error repeat?
Yes Replace the MT.
Service Call Temperature rise at
1) Is the error message displayed?
Yes Turn off the printer, leave it for 30 min and
then turn it on again.
130: Error
the LED head
detected.
2) Does the error repeat?
Yes Replace the LED head unit.
Service Call No LED head unit
1) Is the error message displayed?
2) Is the LED head mounted properly?
3) Does the error repeat?
Yes Verify the installation of the LED head.
Yes Turn off/on the printer.
131: Error
~
detected when
turning on the printer
or closing the cover.
Yes Replace the LED head Assy.
134: Error
Service Call Error detected with
1) Is the error message displayed?
Yes Turn off/on the printer.
Yes Replace the Drum Assy.
140: Error
~
the D located at
appropriate position.
2) Does the error repeat?
142: Error
Service Call Fuse in the ID unit
Is the ID unit mounted properly?
Yes Confirm the cable connection, or
replace the Engine board.
150: Error
~
has not been blown.
153: Error
Yes
Service Call Fuse in the Belt unit
154: Error has not been blown.
Is the Belt unit mounted properly?
Confirm the cable connection, or
replace the Engine board.
Service Call Fuse in the Fuser unit Is the Fuser unit mounted properly?
155: Error
Yes Confirm the cable connection, or
replace the Engine board.
has not been blown.
Service Call Error detected by
1) Is the error message displayed?
Yes Replace Toner sensor or Assy
(Y71-PWB).
160: Error
~
Toner sensor.
2) Does the error repeat?
Yes Same as the above.
Yes Turn off/on the printer.
163: Error
Service Call
170: Error
171: Error
174: Error
175: Error
Short or open circuit
detected at the Fusert
hermistor. (H or L
1) Is the error message displayed?
2) Does the error repeat?
Yes Replace the Thermistor and turn off the
printer. Leave it for 30 min.
temperature error)
Service Call High temperature
1) Is the error message displayed?
2) Does the error repeat?
Yes Turn off/on the printer.
172: Error
176: Error
error detected at
Thermistor.
Yes Replace the Thermistor and turn off the
printer. Leave it for 30 min.
Service Call Low temperature
1) Is the error message displayed?
2) Does the error repeat?
Yes Turn off/on the printer.
173: Error
177: Error
error detected at
Thermistor.
Yes Replace the Thermistor or heater and
turn off the printer.
Service Call Communication
1) Is the error message displayed?
Yes Turn off/on the printer.
181: Error
~
186: Error
failure with an option
unit detected by
Engine
2) Does the error repeat?
1) Is the Top cover open?
Yes Replace the option unit.
Yes Close the Top cover.
Printer engine cover
is open.
Close Cover
310: CCCC
CoverOpen
(* = A4, B4 etc.)
2) Does the Cover switch operatenormally? Yes Close the Side cover.
No Replace the Cover switch.
No Fuser unit detected
when turning on the
printer or closing the
cover.
Check Fuser
320:
Fuser Error
1) Is the error message displayed?
Yes Confirm the existence of the unit.
2) Is the Fuser unit mounted properly?
No Re-install the Fuser unit and turn off/on
the printer.
3) Does the error repeat?
Yes Replace the Fuser unit Assy.
No Belt unit detected
when turning on the
printer or closing the
cover.
Check Belt
330:
Belt Error
1) Is the error message displayed?
2) Is the Belt unit mounted properly?
Yes Confirm the existence of the unit.
No Re-install the Belt unit and turn off/on
the printer.
3) Does the error repeat?
Yes Replace the Belt unit Assy.
No ID unit detected
when turning on the
printer or closing the
cover.
Check Drum
340~343:
Drum Error
1) Is the error message displayed?
2) Is the ID unit mounted properly?
Yes Confirm the existence of the unit.
No Re-install the ID unit and turn off/on the
printer.
Yes Replace the ID unit Assy.
3) Does the error repeat?
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Table 6-1-1 Operator Alarms (4/5)
Error Description
Message
Cause
Solutions
End of the ID unit life.
26,000 or more
copies printed.
Install New Drum
350: Y Drum Life
351: M Drum Life
352: C Drum Life
353: K Drum Life
Is it displayed soon after the ID unit
replacement?
Yes Confirm the life of the ID unit.
No Replace the ID unit.
The Duplex unit is
removed from the
printer.
Install Duplex Unit
360: No Duplex
unit
Recovered if the Duplex unit is inserted
again?
Yes Normal
No Replace the Duplex unit or Engine board.
Paper jam detected
after paper reverse in
the Duplex unit.
Check DUPLEX
370: Paper Jam
1) Is a paper jammed in the Duplex unit?
Yes Remove the jammed paper.
No Check the Duplex unit, or replace it.
Paper jam detected
at the Duplex unit
Check DUPLEX
371: Paper Jam
1) Is a paper jammed in the Duplex unit?
1) Does misfeed occur in the Duplex unit?
Yes Remove the jammed paper.
No Check the Duplex unit, or replace it.
Paper jam detectedd
uring paper feed
from the Duplex unit.
Check DUPLEX
372: Paper Jam
Yes Remove the misfed paper and close
the cover.
No Check the Duplex unit, or replace it.
Paper jam during
paper feed from the
Cassette 1, 2, 3, 4 or 5.
Open Side Cover
380: Paper Jam
1) Does misfeed occur in the specified
cassette?
Yes Remove the jammed paper and install
the cassette.
No Check the Cassette 1, 2, 3, 4 or 5, or
replace it.
Paper jam detected
btwn the B ID and
Fuser.
Open Stacker
Cover
381: Paper Jam
1) Is a paper jammed between the Y ID and Yes Remove the jammed paper.
Fuser?
2) Is the load on the Fuser unit normal?
No Replace the Fuser unit.
Paper jam detected in
the Fuser unit or btwn
the Fuser and paper
ejection.
Open Stacker
Cover
382: Paper Jam
1) Is a paper jammed in the Fuser unit or
between the Y ID and Fuser unit?
Yes Remove the jammed paper.
2) Is the Paper eject switch work normally? No Replace the Fuser unit.
Paper jam detected
on paper entering
the Duplex unit.
Open Stacker
Cover
383: Paper Jam
1) Is a paper jammed at the entrance of the Yes Remove the jammed paper and close.
Duplex unit or in the unit?
No Check the Duplex unit, or replace it.
Paper jam during
paper feed from the
MP Tray.
Check MP Tray
390: Paper Jam
1) Does misfeed occur around the MP Tray? Yes Remove the misfed paper and close the
cover.
No Check the MP Tray, or replace it.
Check Tray *
391~395: Paper btwn a cassette and
Paper jam detected
1) Is a paper jammed around the cassette
or between the B ID and cassette.
Yes Remove the jammed paper.
Jam
the B ID.
2) Does the Paper entry switch operate
normal?
No Replace the Paper entry switch.
Open Stacker
Cover
400: Paper Size the specification
Paper in a size different 1) Is the paper in a custom size?
Yes No action required.
(45 mm or more) from
2) Is the paper in the standard size?
Yes Adjust the Paper size guide of the
cassette.
Error
detected at the Printer
engine.
No Replace the Paper size board
(B73 PWB).
Toner Low
410: Yellow
411: Magenta
412: Cyan
Toner in one of the
four colors is running
short.
1) Is the specified toner cartridge almost
empty?
Yes Replace it with a new toner kit.
2) Does the Toner sensor of the specified
cartridge operate normally?
No Replace the Toner sensor for the
specified color.
413: Black
Remove Printed The stacker for ejected 1) Is the stacker full?
Yes Remove papers from the stacker.
No Replace the Stacker full sensor.
Papers
papers is full.
2) Does the Stacker full sensor operate
normally?
480: Stacker Full
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Table 6-1-1 Operator Alarms (5/5)
Error Description
Message
Cause
Solutions
Yes Load papers in MT.
Load *** Papers The specified cassette 1) No paper in MT?
490: No paper in has no paper or is
the MP Tray
(*** = A4, B5 etc.) cassette be ingused for
printing has no more
removed. Or, the
2) Does the Paper out sensor operate
normally?
No Replace the Paper out sensor.
paper.
Load *** Papers No paper in the
1) No paper in the specified cassette?
Yes Load papers in the specified cassette.
491~495: No
Cassette 1, 2, 3, 4 or 5
paper in the Tray detected.
*
(*** = A4, B5 etc.)
2) Does the Paper out sensor operate
normally?
No Replace the Paper out sensor of the
specified cassette.
Replace Belt
The belt counter has
reached the life value.
1) Is the error message displayed?
Yes Check the belt life.
2) Does the error occur soon after Belt unit No Replace the Belt unit immediately or at
replacement?
the next maintenance.
Replace Fuser
The fuser counter has 1) Is the error message displayed?
reached the lifevalue
Yes Check the fuser life.
2) Does the error occur soon after
Fuser unit replacement?
No Replace the Fuser unit immediately or
at the next maintenance.
Job Offset Home The Job offset assy
Does the Job offset assy operate normally? Yes Replace the Job offset sensor.
Error
does not operate or
cannot detect the
home position.
No Replace the Job offset motor or Engine
board.
Running Short of Running short of paper Does only small mount of papers
Yes Load papers.
Paper in Tray *
detected
(approx. 30 sheets or less) remain?
No Check the Paper near end sensor.
No Confirm the procedure in the manual.
Yes Replace the HDD as it is broken.
Disc Operation
Error
HDD cannot be written. Is the operating procedure correct?
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6.5.2 LCD message troubleshooting
(1) LCD Message
The message on the LCD (liquid crystal display) tells the problem situation of the printer.
Implement the appropriate troubleshooting base on the message.
No.
1
2
Problem
The printer does not work normally after being turned on.
JAM Error
Flowchart Number
1
Paper Input Jam (1st Tray)
Paper Input Jam (MT)
Paper Feed Jam
Paper Eject Jam
DUPLEX Jam
2-1
2-2
2-3
2-4
2-5
3
3
4
5
6
Paper Size Error
I/D Unit Up/Down Error
Fuser Unit Error
Fan Motor Error
4
5
6
Note: When replacing the engine board (L73 PWB), demount the EEPROM chip from the old
board and remount it on the new one.
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1
The printer does not work normally after turned on.
•
•
Turn off the printer, wait a few seconds, then turn it on again.
Is
displayed on the LCD (for about 1 second)?
•
No Is the AC cable connected correctly?
No Connect the AC cable correctly.
▼
•
Yes Is +5V supplied to the PANEL connector pins on the PU board (K73 PWB)?
+5V: Pin 5
0V: Pin 2
Yes Is the operator panel cable connected correctly?
No Connect the cable correctly.
▼
Yes Replace the operator panel cable. Recovered?
No Replace the cover assembly of the operator panel.
▼
Yes End
▼
•
No Is +5V supplied on the POWER connector of the engine board (K73 PWB)?
Pin 11,12, 13, 14: +5V Pin 3, 4, 5, 6, 23, 24, 25, 26, 27, 28, 29, 30: 0V
No Check the connection of the POWER connector, or replace the low-voltage power
supply unit.
▼
•
Yes Replace the engine board.
▼
•
Yes
Are the following voltages supplied to the PU connector of the main board?
Pin 137-147, 187-197: +5V
Pin 148, 198: +12V
Pin 125-136, 175-186: +3.3V
Pin 101-124, 149-174, 199, 200: 0V
Yes Is the main board assy inserted correctly?
No Insert it correctly.
Yes Replace the main board.
▼
•
No
Are the following voltages supplied on the POWER connector of the engine board?
Pin 11, 12, 13, 14: +5V
Pin 1: +12V Pin 2: -12V
Pin 15, 16, 17, 18: +3.3V
Pin 7, 8, 9, 10: +32V
Pin 3, 4, 5, 6, 25, 26, 27, 28: 0V
Yes Replace the engine board.
▼
•
No
Replace the low-voltage power supply unit.
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2-1 Paper Input Jam (1st Tray)
•
Does the jam occur soon after the printer is turned on?
•
Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor ?
* MT : Multipurpose Tray
Yes Remove the jammed paper.
A
▼
•
No Do the sensor levers (of the entrance cassette sensor and the entrance MT sensor) operate
normally?
No Replace the defective sensor lever.
▼
•
Yes Do the sensors (the entrance cassette sensor and the entrance MT sensor) work properly?
(Operate each sensor lever and verify the signal on the FSENS connector pins on the PU
board (K73 PWB).)
Pin 4: Entrance cassette sensor, Pin 2: Entrance MT sensor
No Check the signal cable connection, or replace the sensor board (R71 PWB).
Yes Check the signal cable connection, or replace the engine board (K73 PWB).
Does the paper jam occur immediately after the paper is fed?
▼
•
▼
•
No
•
Yes Does the paper reach the entrance cassette sensor or the entrance MT sensor?
Yes Go to
.
A
▼
•
No Replace the feed roller or the Retard Pad assy in the paper tray.
▼
•
No
Is the feed motor rotating?
Yes Replace the feed roller.
▼
•
No
Is the resistance of the feed motor at the rated value (approx. 7.9 or 8.4 Ω)?
No Replace the feed motor.
▼
•
Yes
No Replace the low-voltage power supply unit.
Yes Check gear engagement and cable connection, or replace the engine board.
Is +32V supplied to the POWER connector Pins 7~10 on the engine board?
▼
•
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2-2 Paper Input Jam (Multipurpose Tray (MT))
•
Does the paper jam occur immediately after the printer is powered on?
•
Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor ?
Yes Remove the paper jam.
A
▼
•
No Does the lever of the entrance MT sensor operate normally?
No Replace the defective sensor lever.
▼
•
Yes Does the entrance MT sensor work properly?
(Operate the sensor lever and confirm that the sensor works properly with the signal on the
FSENS connector pin on the engine board (K73 PWB).)
Pin 2: Entrance MT sensor
No Check the connection of the signal cable, or replace the sensor board (R71 PWB).
Yes Check the signal cable connection, or replace the engine board.
Does the paper jam occur immediately after paper is fed?
▼
•
▼
•
No
•
Yes Does the paper reach the entrance MT sensor ?
Yes Go to
.
A
▼
•
No Replace the multipurpose tray assembly.
▼
•
No
Does the registration motor rotate properly?
•
No Is +32V supplied to the POWER connector Pins 7~10 on the engine board?
No Replace the low-voltage power supply unit.
▼
•
Yes Check the connection of cables, or replace the engine board.
▼
•
Yes
Go to 2-3 Paper Feed Jam.
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2-3 Paper Feed Jam
•
Does the paper jam occur immediately after the printer is powered on?
•
Yes Is the paper jammed at the entrance belt sensor?
Yes Remove the jammed paper.
A
▼
•
No Does the lever of the write sensor work right?
No Replace the lever of the write sensor.
▼
•
Yes Does the entrance belt sensor work properly?
(Operate the sensor lever and verify the signal on the FSENS connector pin on the engine
board (K73 PWB).)
Pin 6: Entrance belt sensor
No Check the connection of the cable, or replace the sensor board (R71 PWB).
Yes Check the signal cable connection. Is it attached properly?
No Connect the cable properly.
▼
•
▼
•
Yes Replace the engine board.
▼
•
No
Does the paper jam occur immediately after paper is fed?
Yes Does the paper reach the write sensor?
•
Yes Go to
.
A
▼
•
No Is the registration motor rotating?
•
No Is the resistance of the registration motor at the rated value (approx. 7.9 Ω)?
No Replace the registration motor.
▼
•
Yes Check the gear engagement, or replace the engine board.
▼
•
Yes Replace the resistration roller (A) or (B).
Does the paper jam occur when paper is loaded?
Yes Does the belt motor rotate properly?
▼
•
No
•
•
No Is the resistance of the belt motor at the rated value (approx. 7.9 Ω)?
No Replace the belt motor.
▼
•
Yes Check gear engagement, or replace the engine board.
▼
•
Yes Check gear engagement, or replace the belt assy.
End
▼
•
No
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2-4 Paper Eject Jam
•
Does the paper jam occur immediately after the printer is powered on?
•
Yes Is the paper jammed at the ejection sensor?
Yes Remove the jammed paper.
▼
•
No Does the lever of the ejection sensor operate normally?
No Replace the ejection sensor lever.
▼
•
Yes Does the ejection sensor work properly?
(Operate the sensor lever and confirm that the sensor works properly or verify the signal on
the PARTTEMP connector Pin 8 on the engine board (K73 PWB).)
Pin 8: Ejection sensor
No Check the signal cable connection, or replace the ejection sensor.
Yes Replace the engine board.
▼
•
▼
•
No
Dose the heat motor rotate properly?
•
No Is the resistance of the heat motor at the rated value (approx. 7.9 Ω)?
No Replace the heat motor.
▼
•
Yes Is +32V supplied to the POWER connector Pins 7~10 on the engine board?
No Replace the low-voltage power supply unit.
▼
•
Yes Check the connection of the cables, or replace the engine board.
▼
•
Yes
Does the paper separator operate normally?
•
No Does the paper separator solenoid work normally?
No Check the cable connection, or replace the solenoid or the engine board.
Yes Replace the paper separator assy.
▼
•
▼
•
Yes
Replace the eject guide assy.
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2-5 DUPLEX jam
•
Does the paper jam occur immediately after the printer is turned on?
•
Yes Is the paper jammed at the in sensor, rear sensor or front sensor in the DUPLEX unit?
Yes Remove the jammed paper.
▼
•
No Do the in sensor, rear sensor and front sensor in the DUPLEX unit operate properly?
No Replace the defective sensor.
▼
•
Yes Check the cable connections at the in sensor, rear sensor and front sensor of the DUPLEX
unit, or replace the DUPLEX unit board (V73 PWB).
▼
•
No
Does the paper jam occur immediately after paper is fed into the DUPLEX unit?
Yes Is the DUPLEX motor rotating?
•
No Replace the DUPLEX motor.
▼
•
Yes Check gear engagement or replace the DUPLEX board (V73 PWB).
▼
•
Yes
Replace the DUPLEX unit.
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3
Paper Size Error
•
Is paper in the specified size used?
No Use paper that complies with the specification.
Yes Is the paper jammed at the entrance MT sensor or at the paper width sensor?
Yes Remove the jammed paper.
▼
•
Yes
Does the lever of the entrance MT sensor operate normally?
No Replace the defective sensor lever.
▼
•
Yes
Does the entrance MT sensor work properly?
(Operate the sensor lever and verify the signal on the FSENS connector pin on the engine
board (K73 PWB).)
Pin 4: Entrance MT sensor
No Check cable connection, or replace the sensor board (R71 PWB).
▼
•
Yes
Does the lever of the entrance belt sensor operate normally?
No Replace the defective sensor lever.
▼
•
Yes
Does the entrance belt sensor work properly?
(Operate the sensor lever and confirm that the sensor works properly, verify the signal on
the FSENS connector pin on the engine board (K73 PWB).)
Pin 6: Entrance belt sensor
No Check cable connection or replace the sensor board (R71 PWB).
▼
•
Yes
Do all the paper-size detecting switches on the size detecting board (B73 PWB) work right?
(Press the paper-size detecting switches and verify the signal on the engine board PSIZE
connector pins.)
Pin 3: Paper size detector 1
Pin 4: Paper size detector 2
Pin 5: Paper size detector 3
Pin 6: Paper size detector 4
No Check cable connection, or replace the size detecting board (B73 PWB).
▼
•
Yes
Check cable connection, or replace the engine board.
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4
•
Image Drum Unit (IDU) Up/Down Error
Turn off the printer, wait a few seconds, then turn it on again.
Does each drum unit rotate properly while printing?
•
•
No Is the resistance of the IDU motor at the rated value (approx. 4.0 Ω)?
No Replace the defective IDU motor.
▼
•
Yes Is +32V supplied to the POWER connector Pins 7~10 on the engine board?
No Replace the low-voltage power unit.
▼
•
Yes Check cable connection, or replace the engine board.
▼
•
Yes
Does the IDU sensor lever work adequately?
•
No Check gear engagement and the sensor lever operation, or replace the defective gear or
sensor lever.
▼
•
Yes
Does the IDU sensor operate properly?
Verify the signal on the JODEN connector pins on the driver board (K73 PWB).
Pin 4: IDU sensor cyan
Pin 14: IDU sensor black
Pin 2: IDU sensor magenta
Pin 12: IDU sensor yellow
No Replace the junction board (N73 PWB).
▼
•
Yes
Check the cable connection between the junction board (N73 PWB) and engine board (K73
PWB), or replace the engine board.
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5
Fuser Unit Error
•
Does the fuser error occur immediately after the printer is turned on?
A
•
Yes Does the heat roller thermistor have a open or short circuit? (See Figure 6.1.)
(at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)
Yes Replace the fuser unit.
▼
•
No Does the back-up roller thermistor have a open or short circuit? (See Figure 6.1.)
(at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)
Yes Replace the fuser unit.
▼
•
No
▼
•
No
Does the fuser error occur about 3 min. after the printer is turned on?
No Go to A .
•
▼
•
Yes
Is the fuser’s heater on? (Does it get hot?)
•
Yes Replace the engine board.
No Replace the fuser unit.
▼
•
▼
•
No
Does AC voltage appear between CN1 connector Pin 1 and Pin3 of the low-voltage power
supply unit?
No Replace the low-voltage power supply unit.
▼
•
Yes
Replace the fuser unit.
Halogen Lamp
Back-up Roller Thermistor
Heat Roller Thermistor
Bottom part of Fuser Unit
Figure 6.1
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6
Fan Motor Error
•
Does the fan of the low-voltage power supply unit rotate after the printer is turned on?
•
Yes Does the error recur after the fan of the low-voltage power supply unit has been replaced?
Yes Replace the low-voltage power supply unit.
No End
Does the engine board fan rotate after the printer is turned on?
No Is +32V supplied to the FAN connector Pin 1 on the engine board (K73 PWB)?
•
▼
•
▼
•
Yes
•
•
No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?
+32V: Pin 7, 8, 9, 10
No Check cable connection or replace the low-voltage power supply unit.
Yes Replace the engine board.
▼
•
▼
•
Yes Replace the fan of the engine board.
▼
•
Yes
Does the fuser fan rotate after the printer is turned on?
•
No Is +32V supplied to the JOBOFF connector Pin 5 on the engine board (K73 PWB)?
•
No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?
+32V: Pin 7, 8, 9, 10
No Check cable connection, or replace the low-voltage power supply unit.
Yes Replace the engine board.
▼
•
▼
•
Yes Replace the fuser fan.
End
▼
•
Yes
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6.5.3 Image troubleshooting
When the printout images are not satisfactory as shown below, follow the troubleshooting
procedures given in this section.
Printout problem
Flowchart No.
Light or blurred images, or images in inappropriate color tone (Figure 6.2- A )
Dark background (Figure 6.2- B )
1
2
3
4
5
6
7
8
9
0
No images on print output (Figure 6.2- C )
Band/stripes in black or color in the longitudinal direction (Figure 6.2- D )
Band/stripes in white or irregular color in the longitudinal direction (Figure 6.2- F )
Poor fusing (Images are blurred or peeled off when touched with a hand.)
Cyclical printout defects (Figure 6.2- E )
Missing characters
Color misalignment
Printout colors different from the original
D
Black stripes in the
vertical direction
A
B
C
Light or blurred
images as a whole
Dark background
density
Blank paper
E
Cyclical defect
F
White belts or
streaks in the
vertical direction
Figure 6.2
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1
Light or blurred images or images in inappropriate color tone on the whole printout area
(Figure 6.2- A )
•
Is toner low? (Is the message "Toner Low" displayed?)
Yes Supply toner.
▼
•
No
Is the specified paper used?
No Use the specified paper.
▼
•
Yes
Is the lens of the LED head dirty?
Yes Clean the LED head lens.
▼
•
No
Is each LED head assy connected properly to the junction board (Y71 PWB) and engine
board (K73 PWB)?
No Check the cable connection (between each LED head and the engine board) and connect
the cable between the LED head and the engine board properly.
▼
•
Yes
Is+3.8VsuppliedtothefollowingPOWERconnectorpinsonthejunctionboard(Y71PWB)?
+3.8V: Pins 1, 2, 3, 4, 5, 6, 7 and 8
•
Yes Is +3.8V supplied to each LED head assy from the junction board (Y73 PWB)?
YPOW connector Pin 3: LED head assy yellow
MPOW connector Pin 3: LED head assy magenta
CPOW connector Pin 3: LED head assy cyan
BPOW connector Pin 3: LED head assy black
No Replace the junction board (Y71 PWB).
Yes Check the cable connection, or replace the LED head assy.
Check the cable connection, or replace the low-voltage power supply unit. Recovered?
Yes End
▼
•
▼
•
No
▼
•
No
Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?
+32V: Pins 7, 8, 9 and 10
No Check cable connection, or replace the low-voltage power supply unit.
▼
•
Yes
Is +32V supplied to the HVOLT connector Pin 5 on the engine board (K73 PWB)?
No Replace the engine board.
▼
•
Yes
Checkthecableconnection, replacethehigh-voltagepowerunit, orbeltcassetteassembly.
Recovered?
Yes End
▼
•
No
Is each ID terminal connected correctly to the contact assembly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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2
Dark background (Figure 6.2- B )
•
Was each ID exposed to external light for a long time?
Yes Replace the ID unit.
Note: Reset the counter after replacement.
▼
•
No
Are the rollers in the fuser unit contaminated?
Yes Replace the fuser unit.
▼
•
No
Adjust the setting of “MEDIA TYPE”.
Light: 60 g/sq.m. Med. light: 64~74 g/sq.m. Medium: 75~90 g/sq.m.
Med. heavy: 91~104 g/sq.m. Heavy: 105~122 g/sq.m. Ultra heavy: 123~175 g/sq.m.
No Set the “MEDIA TYPE” properly.
▼
•
No
Is each LED head assy connected to the junction board(Y71 PWB) correctly?
No Connect each LED head assy to the junction board(Y71 PWB) appropriately.
▼
•
Yes
Is+3.8VsuppliedtothefollowingPOWERconnectorpinsonthejunctionboard(Y71PWB)?
+3.8 V: Pins 1, 2, 3, 4, 5, 6, 7 and 8
•
Yes Is +3.8V supplied to the following cable connector pins between the junction board (Y71
PWB) and each LED head assy?
YPOW connector Pin 3: LED head assy yellow
MPOW connector Pin 3: LED head assy magenta
CPOW connector Pin 3: LED head assy cyan
BPOW connector Pin 3: LED head assy black
No Replace the junction board(Y71 PWB).
Yes Check the cable connection, or replace the LED head assy.
Check the cable connection, or replace the low-voltage power supply unit. Recovered?
Yes End
▼
•
▼
•
No
▼
•
No
Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?
+32V: Pins 7, 8, 9 and 10
No
Check the cable connection, or replace the low-voltage power supply unit.
Is +32V supplied to the POWER connector pins of the engine board (K73 PWB)?
▼
•
Yes
No Replace the engine board.
▼
•
Yes
Check the cable connection, or replace the high-voltage power supply unit or belt cassette
assy. Recovered?
Yes End
▼
•
No
Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes:
When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
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3
Blank paper (Figure 6.2- C )
•
Is each LED head assembly connected to the junction board (Y71 PWB) and Engine board (K73
PWB)correctly?
No Check the cable connection the LED assembly with the junction board (Y71 PWB) and
engine board.
▼
•
Yes
Is+3.8VsuppliedtothefollowingPOWERconnectorpinsonthejunctionboard(Y71PWB)?
+3.8V: Pin 1, 2, 3, 4, 5, 6, 7, 8
•
Yes Is +3.8V supplied to the following cable connector pins between the junction board (Y71
PWB) and each LED head assembly?
YPOW connector Pin 3 : LED head assembly yellow
MPOW connector Pin 3 : LED head assembly magenta
CPOW connector Pin 3 : LED head assembly cyan
BPOW connector Pin 3 : LED head assembly black
No Replace the junction board (Y71 PWB).
▼
•
Yes Check the cable connection, or replace the LED head assembly.
▼
•
No
Is +32V supplied to the POWER connector pins of the engine board (K73 PWB)?
+32V: Pin 7, 8, 9, 10
No Check the cable connection, or replace the low-voltage power supply unit.
▼
•
Yes
Is +32V supplied to the HVOLT connector Pin 5 of the engine board (K73 PWB)?
No Replace the engine board.
▼
•
Yes
Check the cable connection, or replace the high-voltage power supply unit or belt cassette
assembly. Recovered?
Yes End
▼
•
No
Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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4
Band/stripes in black or color in the longitudinal direction (Figure 6.2- D )
Is each LED head assembly connected to the junction board (Y71 PWB) correctly?
No Connect the LED head assembly to the junction board correctly.
•
▼
•
Yes
Check the cable connection, or replace the LED head assembly. Recovered?
Yes End
▼
•
No
No
Check the cable connection, or replace the junction board (Y71 PWB). Recovered?
Yes End
▼
•
Is the engine board (K73 PWB) connected with the junction board (Y71 PWB) correctly?
No Connect the engine board with the junction board correctly.
▼
•
Yes
Check the cable connection, or replace the engine board (K73 PWB). Recovered?
Yes End
▼
•
No
Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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5
Band/stripes in white or irregular color in the longitudinal direction (Figure 6.2- F )
Is each LED head lens contaminated?
•
Yes Clean the LED head lens.
▼
•
No
Is each LED head assembly connected to the junction board (Y71 PWB) correctly?
No Connect the LED head assembly to the junction board (Y71 PWB) correctly.
▼
•
Yes
Check the cable connection, or replace the LED head assembly. Recovered?
Yes End
▼
•
No
No
Check the cable connection, or replace the junction board (Y71 PWB). Recovered?
Yes End
▼
•
Is the engine board (K73 PWB) connected with the junction board correctly?
No Connect the engine board with the junction board correctly.
▼
•
Yes
Check the cable connection, or replace the engine board (K73 PWB). Recovered?
Yes End
▼
•
No
Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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6
Poor fusing (Images are blurred or peeled off when touched with a hand.)
Is the specified paper used?
•
No Use the proper paper.
▼
•
Yes
Is the contact of the fuser unit connected correctly?
No Connect the contact of the fuser unit properly.
▼
•
Yes
Are the rollers in the fuser unit contaminated?
Yes Replace the fuser unit.
▼
•
No
Is the “MEDIA TYPE” (MENU 1) set correctly?.
Light: 60 g/sq.m. Med. light: 64~74 g/sq.m. Medium: 75~90 g/sq.m.
Med. heavy: 91~104 g/sq.m. Heavy: 105~122 g/sq.m. Ultra heavy: 123~175 g/sq.m.
No Set the proper “MEDIA TYPE”.
▼
•
Yes
DoesACvoltageappearbetweentheCNconnectorPin1andPin3ofthelow-voltagepower
supply unit?
No Replace the low-voltage power supply unit.
▼
•
Yes
Is the resistance of the heat roller thermistor within the rated value? (See the Figure 6.1.)
(at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)
No Replace the fuser unit.
▼
•
Yes
Istheresistanceoftheback-uprollerthermistorwithintheratedvalue?(SeetheFigure6.1.)
(at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)
No Replace the fuser unit.
▼
•
Yes
IstheTHERM1signalontheTHERMconnectorPin6ontheengineboard(K73PWB)within
the range below?
No Replace the fuser unit assy.
▼
•
Yes
Replace the fuser unit assy.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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7
Cyclical printout defects (Figure 6.2- E )
Cycle
3.71 in.
Defective Part
Image Drum
Solution
Replace the ID unit.
1.95 in.
2.66in.
1.73 in.
4.45 in.
2.28 in.
Developing Roller
Toner Supply Roller
Charge Roller
Replace the ID unit.
Replace the ID unit
Replace the ID unit.
Fuser Roller
Replace the fuser unit.
Replace the belt cassette assembly.
Transfer Roller
Note: After replacement of the ID unit, fuser unit or belt cassette unit, the corresponding counter
will be reset.
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8
Missing characters
•
Is the LED head lens contaminated?
Yes Clean the lens of LED head.
▼
•
No
Is each LED head assembly connected to the junction board (Y71 PWB) correctly?
No Check the cable connection, and connect the LED head to the junction board correctly.
▼
•
Yes
Is +3.8V supplied to the following HEADPOW connector pins of the junction board (Y71
PWB)?
+3.8V: Pin 1, 2, 3, 4, 5, 6, 7, 8
•
Yes Is +3.3V supplied to each LED head assembly from the junction board (Y71 PWB)?
YPOW connector Pin 3 : LED head assembly yellow
MPOW connector Pin 3 : LED head assembly magenta
CPOW connector Pin 3 : LED head assembly cyan
BPOW connector Pin 3 : LED head assembly black
No Replace the junction board (Y73 PWB).
▼
•
Yes Check the cable connection, or replace the LED head assembly.
▼
•
No
Check the cable connection, or replace the low-voltage power supply unit. Recovered?
Yes End
▼
•
No
Is +32V supplied to the POWER connector of the engine board (K73 PWB)?
+32V: Pin 7, 8, 9, 10
No Check the cable connection, or replace the low-voltage power supply unit.
▼
•
Yes
Is +32V supplied to the HVOLT connector pin 5 of the engine board (K73 PWB)?
No Replace the engine board.
▼
•
Yes
Check the cable connection, replace the high-voltage power supply unit or belt cassette
assembly. Recovered?
Yes End
▼
•
No
Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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9
Color Misalignment
•
Areanyofthefollowinggearsbroken?(GearassyofIDunit, MultipurposeTray, beltunitandbeltmotor)
Yes Replace the broken gear assembly.
▼
•
No
Is each LED head unit connected to the junction board (Y71 PWB) correctly?
No Connect the LED head unit correctly with the junction board.
▼
•
Yes
Check the cable connection, or replace the LED head assembly. Recovered?
Yes End
▼
•
No
No
Check the cable connection, or replace the junction board (Y71 PWB). Recovered?
Yes End
▼
•
Is engine board (K73 PWB) connected to the junction board (Y71 PWB) correctly?
No Connect the boards correctly.
▼
•
Yes
Check the cable connection, or replace the EEPROM of the engine board. Recovered?
Yes End
▼
•
No
No
Replace the engine board. Recovered?
Yes End
▼
•
Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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0
Printout colors different from the original
Are the LED head lens contaminated?
Yes Clean the LED head lens.
•
▼
•
No
Is each LED head assembly connected to the junction board (Y73 PWB) correctly?
No Check the cable connection (between each LED head and the junction board) and connect
the LED assy to the junction board correctly.
▼
•
Yes
Is +3.8V supplied to the following HEADPOW connector pins of the junction board (Y71
PWB)?
+3.8V: Pin 1, 2, 3, 4, 5, 6, 7, 8
•
Yes Is +3.8V supplied to each LED head assembly from the junction board (Y71 PWB)?
YPOW connector Pin 3 : LED head assembly yellow
MPOW connector Pin 3 : LED head assembly magenta
CPOW connector Pin 3 : LED head assembly cyan
BPOW connector Pin 3 : LED head assembly black
No Replace the junction board (Y71 PWB).
Yes Check the cable connection, or replace the LED head assembly.
Check the cable connection, or replace the low-voltage power supply unit. Recovered?
Yes End
▼
•
▼
•
No
▼
•
No
Is +32V supplied to the POWER connector of the engine board (K73 PWB)?
+32V; Pin 7, 8, 9, 10
No Check the cable connection, or replace the low-voltage power supply unit.
▼
•
Yes
Is +32V supplied to HVOLT connector pin 5 of the engine board (K73 PWB)?
No Replace the engine board.
▼
•
Yes
Check the cable connection, replace the high-voltage power supply unit or belt cassette
assembly. Recovered?
Yes End
▼
•
No
Is each ID terminal connected to the contact assembly correctly? (See Figure 6.3.)
No Connect the ID terminals with the contact assembly correctly.
▼
•
Yes
Replace the ID unit.
Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 6.5.2.
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Ground
Charge Roller
Developing Roller
Toner Supply Roller
Figure 6.3
41388601TH Rev.2
128 /
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Unit
Circuit Diagram
Illustration
Resistance
Yellow
1
2
M
Orange
Between pins 1 and 2: 7.9
Between pins 3 and 4: 7.9
Ω
Ω
Transfer Belt Motor
Black
Black
3
4
1
2
M
M
Between pins 1 and 2: 2.4
Between pins 3 and 4: 2.4
Ω
Ω
Main Motor (Y)
3
4
1
2
Between pins 1 and 2: 2.4
Between pins 3 and 4: 2.4
Ω
Ω
Main Motor (M)
3
4
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Unit
Circuit Diagram
Illustration
Resistance
1
2
M
Between pins 1 and 2: 2.4
Between pins 3 and 4: 2.4
Ω
Ω
Main Motor (C)
3
4
1
2
M
M
Between pins 1 and 2: 2.4
Between pins 3 and 4: 2.4
Ω
Ω
Main Motor (B)
3
4
1
2
Between pins 1 and 2: 7.9
Between pins 3 and 4: 7.9
Ω
Ω
MT
Resistration Motor
3
4
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Unit
Circuit Diagram
Yellow
Illustration
Resistance
1
2
M
Orange
Between pins 1 and 2: 7.9
Between pins 3 and 4: 7.9
Ω
Ω
Fuser Motor
Black
Black
3
4
1
2
M
M
Between pins 1 and 2:
7.9
Between pins 3 and 4:
7.9
Ω
or 8.4
Ω
Ω
Feeder Motor
Ω
or 8.4
3
4
Yellow
1
2
Orange
Between pins 1 and 2: 23
Between pins 3 and 4: 23
Ω
Ω
Offset Motor
Black
3
4
Brown
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Unit
Circuit Diagram
Illustration
Resistance
-
CN-1
Geared Motor
M
+
CN-2
Red
1
+32 V
Yellow
3
FANALM-N
CU Low-voltage
Ejection
M
M
Fuser Fan
Black
2
0 V
Red
1
+32 V
Yellow
3
FANALM-N
Low-voltage
Absorption
Black
2
0 V
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Unit
Circuit Diagram
Red
Illustration
Resistance
1
+5 V
White
3
FANALM-N
CU Board
M
M
Black
2
0 V
Red
1
+5 V
Yellow
3
ID and Fuser
Black
2
0 V
1 Upper roller
2 Lower roller
1
a
b
Thermostat
Heater
Thermostat
a
a
Between pins a and b:
Heater
Between pins c and d: 231.4k
Ω
Between pins e and f: 231.4k
Ω
(at 25
°
C)
C)
f
b
c
b
c
e
d
Thermistor
Center
c
Fuser Unit
Fuse
2
Between pins a and b:
Between pins c and d: 0
Between pins e and f: 231.4k
Ω
or open
(at 25
d
e
d
e
Thermistor
Left
Thermistor
Ω
°
f
f
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7.2 Parts Layout on Boards
(1) Print Engine Controller PWB (K73)
SHUTTER FRPUCL
HOPFF
RCL
ID
CPUFL1
DUPLEX
DUCOV
PSIZE
POWER
HVOLT
41388601TH Rev.2
134 /
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(2) Main Controller PWB: CRM
FAN
PUIF
3
1
ROM
1
2
49
50
IDE
A1
B1
C1
A36
B36
C36
PCICU
2
3
1
4
18
36
1
19
USB
CENT
41388601TH Rev.2
135 /
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(3) LED Control PWB (Y71-2 PWB)
OPTN
(4) Duplex Control PWB (V73- PWB)
SNS1
(5) Control Panel PWB (X71- PWB)
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
41388601TH Rev.2
136 /
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(6) N71-PWB
JODEN
(7) Entrance Sensor PWB (R71- PWB)
INSNS2
WRSNS
INSNS1
HUM
TNR
(8) Paper Size Sensing PWB PXC (B73- PWB)
SW1
SW2
SW3
SW4
CN11
(9) Sensor PWB (A73-PWB)
LIFT
HOP
(10) Option I/F PWB (C73-PWB)
MAIN1
SAVIF
41388601TH Rev.2
137 /
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8.
PARTS LIST
25
22
21
21
24
8
21
23
21
7
21
17
21
19
19
17
42
21
28
31
30
17
21
6
21
21
17
26
14
19
5
17
21
11
15
17
20
19
21
19
17
13
19
19
41
12
19
4
9
19
1
19
2
3
19
Figure 8-1-1/3
41388601TH Rev.2
138 /
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16
19
10
17
C
B
19
17
C
C
17
A
C
B
18
A
18
Figure 8-1-2/3
41388601TH Rev.2
139 /
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44
34
39
33
40
44
38
39
32
35
36
27
37
Figure 8-1-3/3
41388601TH Rev.2
140 /
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Table 8-1-1/3
Main Assembly
Recommended Q’ty/Year
No.
Patrs No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
1
2
3
4
5
6
7
8
9
41481201
Cover Assy-R
Cassette Assy
Cover-Front-CS
Cover-Blank
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
20
2
24
1
31
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
3
3
3
3
3
3
3
3
3
6
3
3
3
3
3
-
6
6
6
6
6
6
6
6
6
6
6
12
6
6
6
6
6
-
12
12
12
12
12
12
12
12
12
12
12
24
12
12
12
12
12
-
41484905
41353701
41277901
41276401
41277401
41484201
41276501
41484601
Cover-Front
Cover-Side(L)
Stacker-Face-Up Assy
Cover-Rear
Cover-Assy MT
MPT Assy-703
10 41493001
11 41297101
12 40325101
13 41278001
14 41515108
41515112
Plate-Top
Gear-Z68
Frame-Top
Print Engine Controller PWB
Print Engine Controller PWB
Motor-Fan(80)
1200dpi
600dpi
15 41490702
16 41275702
Microswitch-Assy
17 4PB4083-2500P008 Screw (T3×8)
18 4PB4013-3100P008 Screw (M3×8)
19 4PB4083-2500P010 Screw (T3×10)
-
-
-
-
-
-
20 55943501
EEPROM
3
40
3
3
3
3
3
-
6
80
6
6
6
6
6
-
12
120
12
12
12
12
12
-
21 4PB4013-3100P006 Screw (M3×6)
22 41531401
N/A
Fuser-Unit
ODA(120V)
OEL/APS
ODA(230V)
ODA
Fuser-Unit
41531403
23 41531501
N/A
Fuser-Unit
Belt-Unit
Belt-Unit
OEL/APS
ODA
24 41514705
41514706
41514707
41514708
N/A
ID-Y Type C3
ID-M Type C3
ID-C Type C3
ID-K Type C3
ID-Y Type C3
ID-M Type C3
ID-C Type C3
ID-K Type C3
-
-
-
ODA
-
-
-
ODA
-
-
-
ODA
-
-
-
OEL
N/A
-
-
-
OEL
N/A
-
-
-
OEL
N/A
-
-
-
OEL
41388601TH Rev.2
141 /
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Table 8-1-2/3
Recommended Q’ty/Year
No.
Patrs No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
24 N/A
N/A
ID-Y Type C3
ID-M Type C3
ID-C Type C3
ID-K Type C3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
3
3
3
-
-
-
-
APS
APS
APS
APS
ODA
ODA
ODA
ODA
OEL
OEL
OEL
OEL
APS
APS
APS
APS
ODA
ODA
ODA
ODA
OEL
OEL
OEL
OEL
APS
APS
APS
APS
1200dpi
600dpi
N/A
-
-
N/A
-
-
25 41515205
Toner-Cartridge_Type_C3_Y (15K)
Toner-Cartridge_Type_C3_M (15K)
Toner-Cartridge_Type_C3_C (15K)
Toner-Cartridge_Type_C3_K (15K)
Toner-Cartridge_Type_C3_Y (15K)
Toner-Cartridge_Type_C3_M (15K)
Toner-Cartridge_Type_C3_C (15K)
Toner-Cartridge_Type_C3_K (15K)
Toner-Cartridge_Type_C3_Y (15K)
Toner-Cartridge_Type_C3_M (15K)
Toner-Cartridge_Type_C3_C (15K)
Toner-Cartridge_Type_C3_K (15K)
Toner-Cartridge_Type_C3_Y (7.5K)
Toner-Cartridge_Type_C3_M (7.5K)
Toner-Cartridge_Type_C3_C (7.5K)
Toner-Cartridge_Type_C3_K (7.5K)
Toner-Cartridge_Type_C3_Y (7.5K)
Toner-Cartridge_Type_C3_M (7.5K)
Toner-Cartridge_Type_C3_C (7.5K)
Toner-Cartridge_Type_C3_K (7.5K)
Toner-Cartridge_Type_C3_Y (7.5K)
Toner-Cartridge_Type_C3_M (7.5K)
Toner-Cartridge_Type_C3_C (7.5K)
Toner-Cartridge_Type_C3_K (7.5K)
PCB Assy-CRM
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6
6
6
6
-
41515206
-
41515207
-
41515208
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
-
N/A
N/A
-
-
N/A
-
26 41356019
41356020
27 8164323M0000
28 41469504
29
12
12
12
12
PCB Assy-CRM
EEPROM(CU)
Board-TNY
41388601TH Rev.2
142 /
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Table 8-1-3/3
Recommended Q’ty/Year
No.
Patrs No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
30 41437418
N/A
Board-Memory 64MB
Board-Memory 64MB
Board-Memory 64MB
Board-Memory 128MB
1
1
1
1
3
3
3
3
6
6
6
6
12
12
12
12
600dpi-ODA
600dpi-OEL
N/A
600dpi-APS
41437419
600dpi Duplex-
ODA,1200dpi-ODA
600dpi Duplex-
N/A
N/A
Board-Memory 128MB
Board-Memory 128MB
1
1
3
3
6
6
12
12
OEL,1200dpi-OEL
600dpi Duplex-
APS,1200dpi-APS
1200dpi Duplex-ODA
1200dpi Duplex-OEL
1200dpi Duplex-APS
1200dpi-ODA
1200dpi-OEL
41437420
N/A
Board-Memory 256MB
Board-Memory 256MB
Board-Memory 256MB
Board-Memory 64MB
Board-Memory 64MB
Board-Memory 64MB
Board-MLETB09
Board-MLETB09
HDD Assy
1
1
3
3
6
6
12
12
12
12
12
N/A
1
3
6
31 41437418
41437414
1
3
6
1
3
6
41437410
1
3
6
12 1200dpi-APS
32 41376902
41437302
(1)
(1)
(1)
(1)
(1)
1
(3)
(3)
(3)
(3)
(3)
3
(6)
(6)
(6)
(6)
(6)
6
(12) Option-OEL
(12) Option-APS
33 41376005
41376004
(12) Option-ODA
HDD Assy
(12) Option-OEL
41376002
HDD Assy
(12) Option-APS
34 41286901
35 41278601
36 41278701
37 41410201
38 41467401
39 41254601
40 41278401
41 41366501
42 41366601
43
Plate Shield
12
28
12
12
12
28
20
12
12
Guide -Rail(A)
2
6
12
6
Guide -Rail(B)
1
3
Motor-Fan
1
3
6
Plate-FG(Centro)
Plate-blank
1
3
6
2
6
12
10
6
Screw
2
5
Limitter-2Way(Front)
Limitter-2Way(Rear)
1
3
1
3
6
44 41723901
Screw
2
-
-
-
41388601TH Rev.2
143 /
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1
5
4
13
11
12
14
17
6
18
16
8
3
7
16
15
3
3
10
18
3
3
2
3
9
3
2
16
3
2
2
Figure 8-2
41388601TH Rev.2
144 /
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Table 8-2
Top Cover Assembly
Recommended Q’ty/Year
No.
Parts No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
1
2
41484401
Cover Assy-Stacker
LED Assy 1200dpi
LED Assy 600dpi
LED Assy Spring
LED control PWB
Lever Stacker Full
Cover Assy-Inn(Sub)
LED Harness M
1
4
4
8
1
1
1
1
1
1
1
4
1
1
1
1
1
4
1
19
3
12
12
24
3
6
24
24
48
6
12
48
48
96
12
12
12
12
12
12
12
48
12
12
12
12
12
48
12
-
41502301
41502302
40861001
41257902
41349801
41487101
41514103
41514104
41514101
ODA/OEL/APS
ODA/OEL/APS
3
4
5
6
7
8
9
3
6
3
6
3
6
LED Harness C
3
6
LED Harness K
3
6
10 41514102
11 41703701
12 41484501
13 40866207
40866211
LED Harness Y
3
6
Sensor-Assy-Tonner
Control Panel Assy
Control Panel Bezel
Control Panel Bezel
12
3
24
6
3
6
1200dpi
600dpi
3
6
14 2381005P0024
15 41484701
16 2251001P0260
17 40255202
Control Panel Tape Harness
Eject Guide Assy
3
6
3
6
26pin LED Connector
Motor-Fan(80-25)
12
3
24
6
18 4PB4083-2500P008 Screw (T3×8)
-
-
41388601TH Rev.2
145 /
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22
12
7
26
39
39
39
27
2
25
24
37
40
4
39
39
1
37
1
20
39
6
23
21
42
18
5
17
8
13
10
11
19
39
39
9
39
16
3
39
Figure 8-3-1/2
41388601TH Rev.2
146 /
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27
29
30
37
37
28
37
37
33
37
37
35
37
31
43
37
36
34
37
32
37
41
37
37
38
37
37
Figure 8-3-2/2
41388601TH Rev.2
147 /
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Table 8-3-1/2
Printer Unit Chassis
Recommended Q’ty/Year
No.
Parts No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
1
2
3
4
5
6
7
8
9
41189701
Drum contact Assy
4
1
1
1
1
1
1
1
1
1
1
1
1
12
3
3
3
3
3
3
3
3
3
3
3
3
24
6
6
6
6
6
6
6
6
6
6
6
6
48
12
12
12
12
12
12
12
12
12
12
12
12
41483201
41483301
40845401
41187101
41483401
41483701
41491001
41744001
Registration Roller Assy (A)
Registration Roller Assy (B)
Registration Drive Gear (A)
Registration Clutch
Registration Motor Assy
Motor-Assy-Fan
Color Registration Sensor Assy
Registration Shutter Solenoid
Registration Shutter
10 41743901
11 41744601
12 41486801
13 41483101
14
Registration Shutter Spring
Duplex Guide Assy
Printer Unit Chassis
15
16 40841601
17 41578501
18 40841801
19 41258301
20 41486601
21 41393901
22 41095901
23 51607301
24 51609401
25 41073601
26 40841301
27 41628301
28 41483901
29 40841401
30 41483801
31 41484001
32 40850201
33 41303401
41303501
Entrance Cassette Sensor Actuator
Entrance MT Sensor Actuator
Entrance Belt Sensor Actuator
Board R71
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
3
3
3
3
3
3
3
3
3
3
3
6
3
3
3
3
3
3
3
3
6
6
6
6
6
6
6
6
6
6
6
12
6
6
6
6
6
6
6
6
12
12
12
12
12
12
12
12
12
12
12
24
12
12
12
12
12
12
12
12
Magnet-Assy-Dup
Solenoid sheet Assy
Roller Feed(C)
Fuser Exit Roller Bushing (L)
Fuser Exit Roller Bushing (R)
Exit Sensor Assy
Fuser Latching Handle (L)
Fuser Latching Handle Spring
Transfer Belt Motor Assy
Fuser Latching Handle (R)
Main Motor Assy
Left Plate Assy
Contact Assy
PWR Unit-ACDC Switch 120V
PWR Unit-ACDC Switch 230V
Power Unit(High-Voltage)
34 40737601
41388601TH Rev.2
148 /
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Table 8-3-2/2
Q’ty
Recommended Q’ty/Year
No.
Parts No.
Name
Remarks
/Unit
per
per
per
500
1000
2000
35 56732302
36 41500101
HV Tape Harness
Power Supply Insulation
1
1
3
3
-
6
6
-
12
12
-
37 4PB4013-3100P006 Screw (M3×6)
38 PSW4-8C Screw (M4×8)
39 4PB4083-2500P008 Screw (T3×8)
26
1
-
-
-
29
2
-
-
-
40 41346301
41 41589501
42 40197103
43 41431602
Transfer Contact Assy
6
3
3
3
12
6
6
6
24
12
12
12
Power Supply Insulation(HV)
FAN-Power Supply (PUSH)
FAN-Left Plate (PUSH)
1
1
1
41388601TH Rev.2
149 /
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12
9
11
12
12
12
11
12
11
8
12
11
11
11
11
12
12
1
12
12
7
7
9
10
7
10
11
7
12
10
Figure 8-4-1/2
41388601TH Rev.2
150 /
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12
13
12
6
2
5
2
12
12
4
2
18
12
12
12
13
12
12
3
17
12
15
16
13
Figure 8-4-2/2
41388601TH Rev.2
151 /
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Table 8-4
Paper Tray Guide
Recommended Q’ty/Year
No.
Parts No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
1
2
3
4
5
6
7
8
9
41481301
Guide-Assy-R-1st
1
1
3
3
3
3
3
3
12
3
3
-
6
6
6
6
6
6
24
6
6
-
12
12
12
12
12
12
48
12
12
-
41481701
41488401
41529101
41515701
41503001
41502601
41515801
56731640
Roller-Feed
Roller-Feed-A3
Motor-Pulse(Hop)
Board-A73
1
1
1
Gear Assy-Clutch(2pin)
Rubber Foot
1
4
Paper Size Sensing PWB
Connector
1
1
10 4PB4013-3101P006 Screw (T4×6)
11 4PB4013-3101P008 Screw (T4×8)
12 4PB4013-3100P008 Screw (M3×8)
13 4PB4083-2500P010 Screw T3×10
14
4
27
18
4
-
-
-
-
-
-
-
-
-
15 PSW2W3-10C
16 PSW2W3-16C
17 PSW2W3-20C
18 41488301
Screw
2
1
3
1
-
-
-
-
-
-
Screw
Screw
-
-
-
Gear Assy-Clutch(3pin)
3
6
12
41388601TH Rev.2
152 /
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3
3
2
3
3
3
3
3
3
3
3
D
C
B
A
4
4
4
4
D
4
C
3
E
B
4
3
E
3
A
1
4
3
3
4
4
Figure 8-5
41388601TH Rev.2
153 /
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Table 8-5
Duplex Unit
Recommended Q’ty/Year
No.
Parts No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
1
41178201
Duplex Assy
Duplex Assy
Duplex Assy
1
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ODA
OEL
APS
41178203
41178207
1
2
3
4
4PB4043-4718P001 Screw (SP3×10)
4PB4083-2500P008 Screw (T3×8)
4PB4013-3100P006 Screw (M3×6)
2
21
9
41388601TH Rev.2
154 /
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21
9
20
22
23
24
1
7
25
7
7
9
7
19
Figure 8-6-1/2
41388601TH Rev.2
155 /
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12
12
12
6
2
5
2
12
12
2
6
18
*
12
*
*
4
12
*
12
*
*
*
3
*
17
12
12
*
15
*
16
13
These parts are not attached to the lowest tray.
*
Figure 8-6-2/2
41388601TH Rev.2
156 /
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High Capacity Tray Unit, 2nd/3rd Tray Unit
Recommended Q’ty/Year
No.
Parts No.
Name
Q’ty
Remarks
/Unit
per
per
per
500
1000
2000
1
2
3
4
5
6
7
8
9
41481301
Guide R Assy
Roller-Feed
1
3
1
1
1
1
4
3
9
6
18
6
12
36
12
12
12
12
48
41481701
41488401
41529101
41515701
41503001
41502601
Roller-Feed (A3)
Motor-Hopping
Board A73
3
3
6
3
6
Clutch Guide Assy (2 pin)
Rubber-Foot
3
6
12
24
2201000P140
Connector
1
4
3
-
6
-
12
-
10 4PB4013-3101P006 Screw (T4×6)
11 4PB4013-3101P008 Screw (T4×8)
12 4PB4013-3100P008 Screw (M3×8)
13 4PB4083-2500P010 Screw (T3×10)
14
27
18
4
-
-
-
-
-
-
-
-
-
15 PSW2W3-10C
16 PSW2W3-16C
17 PSW2W3-20C
18 41488301
19 41547805
20 41503601
21 41503801
22 41463003
23 41515801
24 41503701
25 41481201
Screw
2
1
3
1
1
1
1
1
1
1
1
-
-
-
Screw
-
-
-
Screw
-
-
-
Clutch Guide Assy (3 pin)
Cassette Assy
Cover-Side L
Cover-Rear
3
3
3
3
3
3
3
3
6
6
6
6
6
6
6
6
12
12
12
12
12
12
12
12
Board V73
Paper Size sensor
Cover-Side R Sub
Cover-Side R Assy
41388601TH Rev.2
157 / 157
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