ACER
ACER_LCD_X193HQ_SM080904V1
Model ID:RA19WAANU
DBG DPBU II
Service
Service Manual
Table of Contents
01. Product Specification--------------------------------------------------------------------------------- 02
02. OSD Menu-----------------------------------------------------------------------------------------------08
03. Exploded Diagram------------------------------------------------------------------------------------- 10
04. Assembly and Disassembly Procedures-----------------------------------------------------------12
06. Firmware Upgrade Procedure------------------------------------------------------------------------31
07. Writing EDID Procedure-------------------------------------------------------------------------------33
08. Block Diagram------------------------------------------------------------------------------------------ 35
Safety Notice
Any person attempting to service this chassis must familarize with the chassis and be
aware of the necessary safety precautions to be used when serving electronic equipment containing
high voltage.
Published by Wistron Corporation Printed in Taiwan © All rights reserved Subject to modification
04th-Sept.-2008
ꢀꢁꢂꢃ
ACER X193HQ
2
1. Product Specification
The LCD monitor consists of an interface board , a power
1.1 SCOPE
This document defines the design and performance
board , a function key board and two speaker(1W)(with audio)
The interface board will house the flat panel control logic ,
brightness control logic, audio function control (option), key
function control, DDC and DC to DC conversion to supply the
appropriate power to the whole board and LCD flat panel , and
transmitting LVDS signals into LCD flat panel module to drive
the LCD display circuit .The power board will support main
power DC5V to interface board and drive the two CCFLs (Cold
Cathode Fluorescent Tube).The interface board provides the
power ON / OFF control over the whole monitor and control for
DPMS LED indicator to function key board.
requirements for a 19W inch diagonal , flat panel monitor
.The display element shall be a WXGA(1366X768)
resolution TFT-LCD (Thin Film Transistor Liquid Crystal
Display).16.7M color images are displayed on the
panel.Video input signals are analog RGB (0.7Vp-p). When
the systemis powered-on , previously stored screen
parameters for a pre-defined mode will be recalled if the
operating mode is one of stored in memory( 21 factory , 9
users timing ).This monitor operates normal by non-
interlaced mode. DDC (Display Data Channel) function is
DDC2Bi compliance Power saving function complies with
the DPMS (Display Power Management Signaling)
standard.
Monitor Specifications
ITEM
SPEC
Signal Input
（Analog）
Frequency
Analog
H:31Hz~83Hz
V:56Hz~75Hz
135MHz(Max)
Analog :07Vp-p
640x480 (VGA)~1366x768(WXGA)
1.2 GENERAL REQUIREMENTS
Pixel Clock
Video Input
1.2.1Test Condition
Display Pixels
Syne Signal
Frequency
Brightness level & contrast level max. Full white
pattern test mode following spec. Warm up more than
1 hr, ambient light < 10 Lux , Luminance meter
CA110 or BM7 or same equipment .
Separate SYNC for TTL (N or P)
Digital
Signal Input
（Digital）
H:31Hz~83Hz
V:56Hz~75Hz
Pixel Clock
Video Input
135MHz(Max)
Analog :07Vp-p
Input Inpedance 75Ω
1.2.2 Test Equipment
Display Pixels
AC Input
640x480 (VGA)~1366x768(WXGA)
AC 100V~AC240V 10% 50/60Hz ,3pin AC Power Cord
D-SUB 15 pin &DVI -D
Connector
The reference signal source is a calibrated Chroma
2135 video generator or higher.The use of other
signal generators during qualification and production
is acceptable provided the product complies with this
specification.
Input Connector
Audio Jack(Optional )
AC in 100V~240V)
Front
Audio Input 3.6 Φ
Active 30W(with Audio), active 25W ,Power Saving <2W
Power Consumption
User'sControl
Empowering ,Auto Adjust ,Adjust (-),Adjust (+),,Menu ,Power
OSD
Contrast,Brightness ,Position ,Clock ,Phase ,
Analog/Digital, RESET, Color ,Language select ,
Audio (Option ),ect.
21
Pre-Defined Timing
Factory
User
9
Plug and Play
Power Saving
VESA DDC 2Bi
VESA DPMS
≦H 1kHz,≦V 1Hz
1.3 ELECTRICAL
Input Signal Counter Tolerance
This section describes the electrical requirement of the
monitor block diagram in Figure 1 illustrates the various
electrical sub-system.
1.3.1 Interface Connectors
1.3.1.1 Power Connector and Cables
The AC input shall have an IEC/CEE-22 type male
power receptacle for connection to mains power.
The power cord shall be with length of 1.8+/-0.005
meters.
1.3.1.2 Video Signal Connectors and Cable
The signal cable shall be 1.8 +/-0.005 meters long.
At the end of the cable shall be a molded-over,
shielded,triple row, 15 position, D-subminiature
connector. The CPU connection shall have captive
screw locks, which will be adequate for hand
tightening. The monitor connection may use small
screws.
Connector Pin Assignment
D-SUB
3
ACER X193HQ
1. Product Specification (continued)
No.
Symbol
Item
Min Normal Max Unit Remark
Pin
1
Signal
Pin
6
Signal
Pin
11
12
13
14
15
Signal
Red-Video
Green-Video
Blue-Video
NC
Red-GND
Green-GND
Blue-GND
+ 5V
NC
1
Fh
Horizontal Frequency
31
83
kHz Minimum range
Hz Minimum range
2
7
DDC-SDA
H-SYNC
V-SYNC
DDC-SCL
3
8
2
3
4
Fv
Vih
Vil
Vertical Frequency
Hi Level Input
Low Level Input
RGB Analog Video
Level
56
2.0
0
75
5.0
0.8
4
9
V
V
Note 1)
Note 1)
5
Connection Detect
10
GND
Connector Pin Description
D-SUB Description
5
Video
0.0
0.7
0.1
V
75Ω to Ground
Note 1) Schmitt-Triggers Input, Supported 3.3V device
Pin
Name
Description
H(&V) sync output from PC
1
Red-Video
Green-Video
Blue-Video
NC
Red video signal input
Green video signal input
Blue video signal input
Not connect
V id eo In p u t S ig n a l
2
N o . S ym b o l
Item
M in N o rm a l M a x
U n it
k H z
R em a rk
3
1
F h
S can n in g H o rizo n tal F req uen cy
3 0
9 4
M in im u m ran g e
4
2
3
F v
S can n in g V ertical F requ en cy
H i L ev el Inp u t
5 5
2
7 6
5
H z
M in im u m ran g e
N ote 1 )
5
Connection Detect
Red-GND
Green-GND
Blue-GND
+5V
Deteck VGA Cable have Connected or not
Analog signal ground for the Red video
Analog signal ground for the Green video
Analog signal ground for the Blue video
V ih
6
4
5
V il
L o w L ev el In p u t
0
0 .8
1 .0
V
V
N ote 1 )
7
V id eo
R G B A n alo g V id eo L ev el
0 .0
0 .7
7 5 Ω to G ro u n d
8
N ote 1 ) S ch m itt-T rig g ers Inp u t
,
S u p p orted 3 .3 V d ev ice H (& V ) sy n c ou tp u t fro m P C .
9
+5V input from host system for the VESA DDC 2Bi function
Signal ground
10
11
12
13
14
15
Sync-GND
NC
Not connect
1.3.2.1 Video Signal Amplitudes
NCDDC-SDA
H-SYNC
SDA signal input for the VESA DDC 2Bi function
Horizontal signal input from the host system
Vertical signal input from the host system
SCL signal input for the VESA DDC 2Bi function
The three video inputs consist of Red ,Green , and Blue
signals, each with its own coaxial cable terminated at the
monitor. These video signals are analog levels, where 0
V corresponds to black , and 700 mV is the maximum
signal amplitude for the respective color, when each
signal is terminated by a nominal 75.0 ohms .For a given
monitor luminance levels are measured using this
defined video amplitud driving a monitor meeting the
termination requirements .The signal amplitude is not to
be readjusted to compensate for variations in termination
impedance.
V-SYNC
DDC-SCL
DVI-I/DVI-D(If using DVI-D cable,C1,C2,C3,C4,C5 is NC)
Pin
Signal
Pin
Signal
Pin
Signal
1
2
RX2-
13
14
15
16
17
18
19
20
21
22
23
24
NC
C1 Analog Red(NC)
C2 Analog Green (NC)
C3 Analog Blue (NC)
C4 Analog H-Sync (NC)
C5 GND
RX2+
5V
3
GND
DVI Connect
HP
4
NC
5
NC
RX0-
RX0+
GND
NC
6
SCL
7
SCA
8
Analog V-Sync(NC)
9
RX1-
RX1+
GND
NC
NC
10
11
12
GND
RXC+
RXC-
1.3.2.2 Video Signal Termination Impedance
This analog video signal termination shall be 75Ω+/-1%
which shall be resistive with a negligible reactive
component .
DVI-I/DVI-D Connector
Pin Description
Pi
Pin Name
Desription
n
Name
Desription
1
2
3
4
5
6
7
8
9
RX2-
RX2+
GND
NC
TMDS link #0 channel #2 differential pair
TMDS link #0 channel #3 differential pair
GND for no link share
NC
16 HP
Hot plugging
17 RX0-
18 RX0+
19 GND
20 NC
TMDS link #0 change #1 differential pair
TMDS link #0 change #1 differential pair
GND for no link share
NC
1.3.2.3 Synchronization ( Sync ) Signals
The Horizontal Sync (HS) TTL signal is used to initiate
the display of a horizontal line. HS may be either active
high or active low, depending upon the timing .The
Vertical Sync (VS) TTL signal is used to initiate the
display of a new frame .VS may be either active high or
active low, depending on the timing
NC
NC
SCL
SDA
Clock line for DDC interface
Data line for DDC interface
21 NC
NC
22 GND
23 RXC+
24 RXC-
C1 Analog Red
Clock shield
Analog V-Sync V-sync for analog interface
RX1- TMDS link #0 change #1 differential pair
TMDS clock differential pair
TMDS clock differential pair
Analog Red signal
10 RX1+
11 GND
12 NC
TMDS link #0 change #1 differential pair
GND for no link share
C2 Analog Green Analog Green signal
C3 Analog Blue Analog Blue signal
C4 Analog H-Sync H-Sync for analog interface
C5 Analog GND Analog GND
NC
1.3.2.4 Sync Signal Levels
13 NC
NC
14 5V
+5V input from host system for DDC 2B function
Using as Detect Cable
The monitor must accept sync signals from both 3.3 and
5 volt TTL logic families.The inputs shall sense a logic 0
when the input is 0.8 volt or less and shall sense a logic
1 when the input is 2.0 volts or greater. In addition to
these level requirements, there shall also be a minimum
of 0.3 volt hysteresis provided for noise immunity
(typically by using a Schmitt Trigger input ).That is , the
input level at which the monitor actually detects a logic 0
shall be at least 0.3 volt lower than the level at which it
actually detects a logic 1.If the monitor sync processing
circuits are designed around the 3.3 volt logic family
,then the sync inputs must be 5 volt tolerant .
15 DVI Connect
1.3.1.3 Audio Jack (option)
This jack shall connect the audio input from
host computer.
1.3.2 Video Input Signals
Video Input Signal Ranges
ACER X193HQ
4
1. Product Specification (continued)
1.3.2.5 Sync Signal Loading
1.3.3.4 OSD adjustment
TTL input loading shall be equivalent to one TTL
input load. When logic 0 is asserted by a sync
ITEM
AUDIO VOLUME
BRIGHTNESS
CONTRAST
CONTENT
To increase or decrease the sound level
input , the maximum current source from any
single monitor sync input to the driver is 1.6 mA
.When logic 1 is asserted , the maximum current
source from the driver to any single monitor sync
input is 400 uA .
Back light Luminance of the LCD panel is adjusted.
A gain of R , G and B signal is adjusted.
AUTO CONTRAST
CLOCK
A gain of R , G and B signal auto adjust.
The ratio of dividing frequency of the dot clock is adjusted.
The phase of the dot clock is adjusted.
PHASE
H-POSITION
V-POSITION
AUTO ADJUST
COLOR BALANCE
OSD POSITION
The indication screen is horizontally moved right and left (1 Pixels pitch).
The indication screen is vertically moved up and down (1 Pixels pitch).
Clock system auto adjustment, about under 8 sec.
Select three kinds of modes. ( USER /6500 / 9300 ).
The OSD indication position can be adjusted.
1.3.2.6 Abnormal Signal Immunity
The monitor shall not be damaged by improper
sync timing , pulse duration , or absence of sync ,
or abnormal input signal amplitude ( video and/ or
sync too large or too small) , or any other
anomalous behavior of a graphics card video
generator when changing modes , or when any
combination of input signals is removed or replaced
. Additionally , under these conditions , the monitor
shall not cause damage to the driving source
Select the language used for the OSD menu among English , French ,
Italian , Deutsch and Spanish.
OSD LANGUAGE
RECALL DEFAULTS All data copy from factory shipment data.
OSD DURATION
POWER-SAVE
Adjust OSD menu off time range from10~120 second.
Back light of the LCD panel is cut when the signal is not input (AC line
power consumption 2W or less).
The frequency of the horizontal / vertical synchronizing signal under the
input is indicated.
INFORMATION
1.3.3 User Controls and Indicators
1.3.3.1 Power On / Off Switch
※
NOTE
:
OSD MENU SEE APPENDIX
A
1.3.4 Monitor Modes and Timing Capability
1.3.4.1 Format and Timing
The monitor shall have a power control switch
visible and accessible on the front of the monitor .
The switch shall be marked with icons per IEC 417
, # 5007 and # 5009.The switch shall interrupt the
DC supply to the monitor
The monitor shall synchronize with any vertical
frequency from 56 to 75 Hz , and with any
horizontal frequency from 31 to 83KHz. If the input
frequency is out of the above – specified range,
the monitor shall display a warning screen
1.3.3.2 Power Indicator LED
The monitor shall make use of an LED type
indicator located on the front of the monitor .
The LED color shall indicate the power states as
given in Table 1.
indicating that the input frequency is out of range.
Under no circumstances shall any combination of
input signals cause any damage to the monitor .
1.3.4.2 Factory Assigned Display Modes
T a b l e
1
F u n c t i o n
F u l l P o w e r
L E D
B l u e c o l o r
r a n g e c o l o r
C
o l o r
There are 21 factory pre-set frequency video
modes. These modes have a factory pre-set for all
characteristics affecting front-of-screen
S l e e p
O
1.3.3.3 On-Screen Display
performance. When the system is powered-
on,previously stored screen parameters for a pre-
defined mode will be recalled if the operating
mode is one of those stored in memory. If the
operating mode is not one of those stored in
memory, the monitor CPU will select the PRESET
timing for a mode that is the next lowest in
The Lite-ON On Screen Display system shall be
used , controlled by a Menu button. If the buttons
remain untouched for OSD turn off time while
displaying a menu , the firmware shall save the
current adjustments and exit. Also, if the video
controller changes video mode while the OSD is
active, the current settings shall be saved
immediately, the OSD turn off, and new video mode
is displayed.
horizontal scanning frequency to the mode being
currently used. The screen parameters may be
adjusted by the use of the front bezel controls and
then may be saved as a user defined mode. The
monitor shall include all the preset video timings
shown in the following page.(Please see Note.(3) )
D
e s c r i p t i o n
S D i s p l a y e d
d i s p l a y t h e
s e l e c t t h e
K
e y
W
M
h e n n o
O
S D d i s p l a y
O
D
1 .
2 .
T
T
o
O
S D
m
e n u o n t h e s c r e e n .
M
E
N
U
e n u D i s p l a y
o
O
S D s u b - M e n u
S p e a k e r
V
o l u m e / M i n u s 1 . F o r w a r d s e l e c t i o n o f t h e
O
S D
m
e n u .
>
( w i t h A u d i o )
2 . I n c r e a s e t h e v a l u e a f t e r s u b - m e n u s e l e c t e d .
S p e a k e r
( w i t h
V
o l u m e / P l u s
1 .
2 .
B
D
a c k - f o r w a r d s e l e c t i o n o f t h e
O
S D
m
e n u .
<
A
u d i o )
e c r e a s e t h e v a l u e a f t e r s u b - m e n u s e l e c t e d .
A
E
u t o
A
d j u s t F u n c t i o n
M
M
e n u o r s u b . m e n u
e n u o r s u b . m e n u
E
E
X
X
I T / A u t o
A
d j u s t f u n c t i o n .
A
u t o
E
m
p o w e r i n g
I T / S c e n a r i o
m
o d e
5
ACER X193HQ
1. Product Specification (continued)
1.3.4.3 Mode Recognition Pull-in
1.3.5.2 Video Stretching
The monitor shall recognize preset modes within a
range of +/-1KHz whichever is less for horizontal ;
and within +/-1Hz for vertical.
The monitor shall contain provisions to “stretch” the
video signal, so that an input signal from the
computer in any resolution smaller than 1366 x
768 is automatically expanded to fill the entire
screen.
1.3.4.4 User Display Modes
In addition to the factory pre-set video modes,
provisions shall be made to store up to 9 user
modes. If the current mode is a user mode, the
monitor shall select its previously stored settings.
If the user alters a setting, the new setting will be
stored in the same user mode. The user modes
are not affected by the pre-set command. If the
input signal requires a new user mode, storage of
the new format is automatically performed during
user adjustment of the display (if required).(
Please see Note.(4) )
1.3.5.3 Panel Timing and Interface
The controller supplied with the monitor shall
control all panel timing. This controller shall
adequately insulate the monitor from the computer,
so that no possible combination of input signals
from the computer shall cause damage to the flat
panel or any other component of the monitor. The
LCD panel interface shall support the TFT
standard.
1.3.6 DC - AC Inverter Requirements
Preset timing Chart
The DC-AC inverter is on the power board. The
frequencies used by the DC-AC inverter used to power the
backlight shall be chosen so as to prevent any noticeable
effects on the flat panel (such as a rolling effect).
1.3.7 Power Supply Requirements
Preset Timing Chart
H-Sync V-Sync Band Width Polarit
Item No
Resoulution
Source
(KHz) (KHz)
31.469 59.941
37.861 72.809
37.500 75.000
(MHz)
25.175
31.500
31.500
30.24
H
-
V
-
1
2
3
4
5
6
7
8
9
T103
T173
T109
640x480@60Hz
640x480@72Hz
640x480@75Hz
VESA
VESA
VESA
MAC
-
-
-
-
The AC to DC converter power supply for the monitor shall
be an external AC to DC converter ”brick” This brick shall
have an IEC receptacle for main power input and a pin - in
---socket for DC power out. The brick shall provide
sufficient power for both the monitor and the backlight
assembly, and shall meet requirements specified in Table
2.
T182 [email protected]
35
66.66
-
-
T102
T104
T116
T117
T110
720x400@70Hz
800x600@56Hz
800x600@60Hz
800x600@72Hz
800x600@75Hz
31.469 70.087
35.156 56.250
37.879 60.317
48.077 72.188
46.875 75.000
28.322
36.000
40.000
50.000
49.500
57.28
-
+
+
+
+
+
-
VGA
+
+
+
+
-
VESA
VESA
VESA
VESA
VESA
VESA
VESA
VESA
11 T118 1024x768@60Hz
12 T157 1024x768@70Hz
13 T141 1024x768@75Hz
14 T203 1152x870@75Hz
15 T126 1152x864@75Hz
16 T161 1280x960@60Hz
48.363 60.004
56.476 70.069
60.023 75.029
68.700 75.000
65.000
75.000
78.750
84.520
108
-
-
-
-
+
-
+
-
Table 2. AC TO DC Converter Requirements
67.5
60
75
60
+
+
+
+
+
+
-
+
+
+
+
+
+
-
108
VESA
VESA
VESA
17 T179 1280x1024@60Hz 63.981 60.020
18 T131 1280x1024@75Hz 79.976 75.025
108.000
135.000
74.176
83.500
85.500
Table
2
AC to DC Converter Requirements
19 T339
20 T213
21 T278
1280x720@60Hz 44.955 59.940
1280x800@60Hz 49.702 59.810
1366x768@60Hz 47.712 59.790
The operating range shall be from 90 to 132 and 195 to 265 AVC
sinusoidal for all models specified.
Input Voltage Range
Input power frequency range sha;; be from 457.to 63 Hz over the
specified input voltage range.
Input Frequency Range
Power consumption for the monitor shall be less th3an0W over the
specified voltage and frequency ranges. In suspend or sleep mode
the power consumption will be less than 2W.
Power Consumption
Line Fuse
1.3.5 Controller Requirements
1.3.5.1 General Requirements
The AC input shall be fused and become electrically open as a result
on an unsafe current level. The fuse many not be user replabclee.
The monitor shall include a controller capable of
converting the analog RGB signal from a standard
SXGA resolution video controller in the CPU to a
signal which can be displayed on the panel. The
controller will include a PLL, A/D converters, LVDS
transmitter and other circuitry necessary to perform
its function. The PLL shall be stable enough to
ensure that a static image from the CPU is placed
in the same physical location on the flat panel in
each frame.
The power supply shall start and function properly when under full
load, with worst case conditions of input voltage, input frequenct,
operating temperature, and cold backlight lamps.
Initial Cold Start
Inrush Current
The inrush current must be limited to 30A when operated at
120VAC, and 50A when operated at 220VAC. Inrush current is
o
measured at an ambient temperature of 25
temperature stabilized in the pow-eorff.
C, with the unit
The power supply shall be damaged when switched ON for one
second and OFF for one second for seven consecutive after
o
Hot Start Cycel
operating for one hour at full load, 25
voltage.
C, and nominal input line
The power supply shall contain protectniocircuitry such that the
application of an input voltage below the minimum specified in this
table shall not cause damage to the power supply unit nor cause
failure of the input.
Under Voltage
Line Transient
The power supply shalloperate within IEC 80-14 ( 1KV) and IEC
801-5 ( 2KV) for the domestic U.S. version. The UPS power
supply shall operate and comply with CE mark.
ACER X193HQ
6
1. Product Specification (continued)
The lamps shall extend a sufficient amount from
1.3.8 Display Communications Channel
the edge of the light guide that sputtering over the
life of the lamps shall not cause degradation of the
luminance uniformity (such as non-illuminated
bands along the edges of the display).
The monitor assembly shall provide a display
communications channel that conforms to VESA
DDC2Bi hardware requirements. This configuration
shall contain the 128-byte EDID file as specified by
VESA EDID standard.The monitor should not write to
the EDID file for the first two minutes of operation
following power-up UNLESS some action taken by the
user or the host CPU forces the write (for instance,
requesting the serial number via the OSD).
1.4.4.2 Lamps Startup Time
The backlight lamps shall start about 2 sec of the
time the monitor power switch is pressed or the
monitor is restarted from a power - down mode
.The starting time shall stay about 2 sec. for the
minimum expected life of the lamps.
Furthermore, it is recommended that CMOS switches
be incorporated to isolate the DDC IC from outside
connections while the EDID Fault Management is
being updated. This is to prevent corruption of the data
by attempts to read the data while it is being changed.
1.3.9 Firmware Update Function (same ISP function)
The update firmware need through from the D-Sub
connector, use DDC I2C bus to do update firmware.
Test conditions are as follows :
Ambient Light ----------------------
Temperature-------------------------- 10℃
Inactive Time ----------------------- > 24 hours
1.4.5 Defects
1.4.5.1 Visual Inspection
< 1.0 lux
The LCD panel shall be inspected with all pixels
set to white,black , red , green , and blue. The color
variation, brightness variation , and overall
appearance must not be perceived as poor quality
by Lite-On . Areas and / or parameters considered
questionable shall be subjected to detailed
measurements .
1.4 PANEL ELECTRICAL
1.4.1 General Requirements
The panel used as the display device shall be an
WXGA 1366X768 resolution, 19 inch-wide TFT-LCD.
This panel shall be approved for use in this monitor.
1.4.2 Panel Timings
The controller included with the monitor shall translate
all video timings from the CPU that meet the timing
requirements listed in Panel specification into timings
appropriate for the panel. Under no circumstances
may the controller supply the panel with timings that
may result in damage. The controller shall insulate the
panel from the CPU , so that the panel shall always be
driven per it's own specification regardless of the
timings being sent from the CPU.
1.4.5.2 Display Degradation
Over the life of the product , variation of the
parameters specified in Panel specification shall
be maintained within reasonable limits.The panel
must not exhibit any significant defects while in
operation ( excluding the CCFL operation ).This
does not in any way change the warranty given by
the panel manufacturer .
1.4.5.3 Light Leakage
1.4.3 Polarizer Hardness
Except for the active display area , there shall be
no light emission visible from any angle from any
other part of the display . For this test , the ambient
illumination must follow panel's specification.
The outer face of the front polarizer panel shall be
covered with a coating with a # 3 hardness value .
1.4.4 Backlight Requirements
1.4.5.4 Allowable Defects
1.4.4.1 General Requirements
No cosmetic defects are allowed except those
specified below.The conditions of visual
inspections are as follows
The backlight assembly shall be designed to
support field replacement at the customer site
or authorized service center. The lamps shall
have a continuous operating life of at least
40,000 hours at 25 degree. The operating life is
defined as having ended when the illumination
of light has reached 50% of the initial value.
For P19W Series.
■Viewing distance is to be approximately 35-50cm
■Ambient illumination is to be 300 to 700 lux.
■Viewing angle shall be at 90 degree.
■Defects not apparent within one minute shall be
ignored.
7
ACER X193HQ
1. Product Specification (continued)
1.4.5.5 Defect Terminology
Table 3 gives the descriptive terms used in classifying
defects.
1.5 Optical Characteristics
Depends on the LCD supplier's spec. Details refer to QA
Inspection Spec.
S p o t s o r li n e s th a t a p p e a r d a r k in th e d i s p la y p a tt e r n s a n d a r e
u s u a l ly th e r e s u l t o f c o n t a m in a t i o n . e f e c ts d o n o t v a r y i n
s iz e o r i n t e n s it y ( c o n tr a s t ) h e n c o n tr a s t v o l t a g e i s v a r ie d .
D
D
a r k
/
S p o ts
/
L i n e s
w
C o n t r a s t v a r i a t io n c a n b e a c h i e v e d t h r o u g h t h e u s e o f v a r y i n g
g r a y s h a d e p a t t e r n s .
S p o t s o r li n e s t h a t a p p e a r l ig h t i n t h e d is p la y p a t te r n s .
D
e f e c t s d o n o t v a r y i n s iz e o r i n t e n s i ty ( c o n t r a s t )
w
h e n
B r i g h t S p o t s
/
L i n e s
c o n t r a s t v o l ta g e i s v a r ie d . C o n tr a s t v a r ia t io n c a n b e a c h ie v e d
th r o u g h th e u s e o f v a r y i n g g r a y s h a d e p a t t e r n s .
W
h e n t h e u n i t l i g h t s , l i n e s a p p e a r l i g h t ( w h i te )
w
i th d i s p l a y
P o l a r i z e r S c r a t c h
p a t t e r n s d a r k a n d d o n o t v a r y in s iz e . P h y s ic a l d a m a g e t o th e
p o l a r iz e r th a t d o e s n o t d a m a g e t h e g l a s s
W
h e n t h e u n i t l i g h t s , s p o t s a p p e a r l i g h t ( w h i t e )
w
i th d i s p la y
P o l a r i z e r
D
e n t
p a t t e r n s d a r k a n d d o n o t v a r y in s i z e . P h y s ic a l d a m a g e t o th e
p o l a r iz e r th a t d o e s n o t d a m a g e t h e g l a s s .
H
o r i z o n t a l o r d i a g o n a l li n e s t h a t a p p e a r g r a y
w
i t h t h e d is p l a y
p a t t e r n s d a r k a n d m a y h a v e r e s u l te d f r o m a n “ o u t o f c o n t r o l ”
R u b b i n g L i n e
r u b b i n g p r o c e s s o n t h e p o l y i m i d e o r “ w a v e s ” o n t h e B E F s o r
p r i s m s h e e t s .
N
e w to n R i n g
o t tl i n g
T h e “ r a i n b o w
h e n t h e u n i t l i g h t s , v a r i a t i o n
( s p l o t c h i n e s s ) a p p e a r s l i g h t ( w h i t e )
”
e f f e c t c a u s e d b y n o n - u n if o r m c e ll t h i c k n e s s .
n o n u n i f o r m i t y
i th t h e d i s p l a y a n d
W
/
–
M
w
m
ig h t v a r y i n s i z e .
W
h e n t h e u n i t l i g h t s , l i n e ( s ) in t h e
m
o n it o r ( v e r t i c a l) o r
m
a j o r
D
i m L i n e
( h o r iz o n t a l ) a x i s a p p e a r d i m
h e n t h e u n i t l i g h t s , l i n e s i n b o t h t h e
d o n o t a p p e a r .
s u b p ix e l ( R ,G ,B d o t) s t u c k o f f o n ( e le c t r i c a l ) .
,
b u t n o t c o m p le te l y o n o r o f f .
W
m
i n o r a n d a j o r a x i s
m
C r o s s L in e s
O
f f
B r i g h t / D a r k
D
o t
A
–
/
1.4.5.6 Smudges, Streaks and Smears
When viewing the panel oriented so as to maximize
reflected light , there shall be no visible smudging ,
streaking, smearing or other nonuniformity from
contaminants ,fingerprints,or defects in any of the visible
surfaces. This is independent of whether the unit is
operating or off .
1.4.5.7 Other Defects
Undefined defects that are considered to be rejectable
by Lite–On will be reviewed by Lite-On as they become
apparent. These panels will be referred to the Lite - On
Corporate / Manufacturer Purchasing Agreement for
disposition.
1.4.5.8 LCD Inspection
Put LCD panel on inspection table and illuminate the
panel with a daylight fluorescent lamp located above the
panel surface such that the luminance at the LCD panel
is between 1000 lux and 1500 lux .Defect limits are given
in Table 4 .
Average Diameter smaller of
Acceptable Number
Minimum Separation
(L+W)/2 or L/20+2W
< 0.1mm
Non countable
N / A
15 mm
0.1 mm ~ 0.3 mm
0.31 mm ~ 0.5 mm
0.51 mm ~ 1.25 mm
1.26 mm ~ 2.5 mm
2.51 mm ~ 3.75 mm
Greater than 3.75 mm
10
10
15 mm
5
15 mm
3
3
25.4 mm
25.4 mm
Not applicable
NONE
Note : Allowable distance between spots of two sizes is the minimum separation
number for the smaller spot. Therefore, if there are two spots, 1.30mm and 0.4mm
in diameter, they must be at least 15mm apart.
ACER X193HQ
8
2 OSD Menu
2.1 MAIN OSD MENU
Outline:
The description for control function:
The description for control function:
M a in
M e n u
Ic o n
S u b
M e n u
Ic o n
S u b M e n u
Ite m
A d ju s tm e n t
R a n g e
D e s c rip tio n
R e s e t V a lu e
S e t th e c o lo r te m p e ra tu re to
w a rm w h ite .
T h e c o lo r
N /A
N /A
W a rm
C o o l
N /A
N /A
te m p e ra tu re w ill b e
s e t to c o o l.
S e t th e c o lo r te m p e ra tu re to
c o o l w h ite .
U s e r /R e d
U s e r/G re e n
0 -1 0 0
0 -1 0 0
0 -1 0 0
1 0 0
1 0 0
1 0 0
A d ju s ts R e d /U s e r/G re e n
G re e n /B lu e in te n s ity .
U s e r/B lu e
E n g lis h
N /A
N /A
N /A
N /A
N /A
N /A
N /A
N /A
ꢀꢁ
ꢂ
D e u ts c h
F ra n c a is
E s p a n o l
Ita lia n o
T h e la n g u a g e w ill
b e s e t to E n g lis h
M u lti-la n g u a g e s e le c tio n .
N /A
ꢃꢁ
ꢂ
ꢄꢅꢆ
A d ju s t th e h o riz o n ta l
p o s itio n o f th e O S D .
A d ju s t th e v e rtic a l p o s itio n
o f th e O S D .
H . P o s itio n
V . P o s itio n
0 -1 0 0
0 -1 0 0
5 0
5 0
1 0
O S D
A d ju s t th e O S D tim e o u t.
1 0 -1 2 0
T im e o u t
A u to A d ju s t th e H /V
P o s itio n , F o c u s a n d
C lo c k o f p ic tu re .
N /A
A u to C o n fig
N /A
N /A
(O n ly A n a lo g In p u t M o d e l)
S e le c t in p u t s ig n a l fro m
a n a lo g (D -S u b )
N /A
N /A
N /A
A n a lo g
D ig ita l
N /A
N /A
N /A
N /A
N /A
(O n ly D u a l In p u t M o d e l)
S e le c t in p u t s ig n a l fro m
d ig ita l (D V I)
(O n ly D u a l In p u t M o d e l)
T h e D D C /C I s w itc h ,
d e fa u lt is “ O N ” in
m o n ito r.
D D C /C I
s w itc h
S e le c t th e D D C /C I O N o r
O F F
S h o w th e re s o lu tio n , H /V
fre q u e n c y ,S N a n d
in p u t p o rt o f c u rre n t in p u t
tim in g .
N /A
In fo rm a tio n
N /A
N /A
N /A
N /A
N /A
N /A
C le a r e a c h o ld s ta tu s o f
A u to -c o n fig u ra tio n
a n d s e t th e c o lo r
N /A
R e s e t
te m p e ra tu re to W a rm .
S a v e u s e r a d ju s tm e n t a n d
O S D d is a p p e a r.
N /A
E x it
ACER X193HQ
12
4. Assembly and Disassembly Procedures
4.1 Assembly procedures:
Take the key function cable out from the hole
Connect the cable between power board(P802)
S4
shown as photo
S1
and interface board (P301)
Fix the function key cable with a PVC tape
Connect the function key cable into interface
board(P304)
Connect the FFC cable into interface board
P802
P304
P301
FFC
Turn the monitor faced down and put it on the
bracket chassis module till both parts firmly
Connect FFC cable to LCD panel. There are
two locks over here when plugging in should
be noticed
S5
Use a Phillips-head screwdriver screwed the
No.1~4 screws till that power board and bracket
chassis base firmly attached.(No1~3 screw
size=M3x6; No4 screw size=M4x8;
S2
Torque=9~10KGFxCM).
2
1
4
3
Use a Phillips-head screwdriver screwed the
No.1~2 screws till that interface board and bracket
chassis base firmly attached.
S3
(No1~2 screw size=M3x6; Torque=9~10KGFxCM).
Plug in parallel direction
1
2
Angel < 5 degrees
13
ACER X193HQ
4. Assembly and Disassembly Procedures (continued)
Put a rear cover on the assembled unit and
Take lamp cables out from the holes shown as the
photo.
S10
S6
press on force mechanisms locked and firmly
attached.
4
4
3
3
2
1
2
1
Plug 2 lamp cables to the connectors of inverter
board.
Use a Phillips-head screwdriver screw 1 screw
S7
S11
(No1 Screw Size=M4x10; Torque=7.5~9.5KGFxCM).
1
Assemble the stand upper side to the rear cover
through the way of screwing 4 screws till both
units firmly attached.
Use a Hex-head and Phillips-head screwdriver
screwed the DVI and D-SUB connectors (No.1~4
Hex Nut screws
S12
S8
(No1~4 Screw Size=M4x10; Torque=12
1KGFxCM).
Size=M3x8;Torque=6.5 0.5KGFxCM).
Torque=6.5 0.5KGFxCM).
2
1
1
2
3
4
3
4
Take a key function board to hook with front
bezeland connect to key function cable.
S9
Assemble the hinge cover into both two sides
S13
ACER X193HQ
14
4. Assembly and Disassembly Procedures (continued)
Stick a screen card on the front bezel with two
Put accessories of stand, DVI cable, and
S18
S14 tapes.
user’s manual ,power cable on specific
positions as photo below.
POWER CABLE
DVI CABLE
D-SUB CABLE
Stick Vista and TC003 label on the correct
position the same as below photo
S15
USER’S MANUAL
Move previous assembled parts into the carton
then stick Vista and feature label on the carton
then packing the carton
S19
Take a LDPE+EPE bag to cover the LCD
monitor.
S16
FEATURE LABEL
VISTA LABEL
Take two cushion foams; one is held the left side
of LCD monitor, and another is held the right side.
S17
.
15
ACER X193HQ
4. Assembly and Disassembly Procedures (continued)
4.2 Disassembly procedures
Open the carton with a proper tool.
S1
Put returned unit on a protective cushion,then
remove LDPE+EPE bag.
S4
Tear off tapes to remove the screen protector
card then turn over the LCD monitor (screen
faced down),
FEATURE LABEL
VISTA LABEL
Take out all accessories including D-SUB
cable power cable, DVI cables, user’s
manual, and packing material from the carton.
(Note: It depends on whether users
returning the accessories.)
S2
Disassemble the stand cover.
POWER CABLE
S5
DVI CABLE
D-SUB CABLE
USER’S MANUAL
Use a Phillips-head screwdriver unscrew 4 screws
to release the stand base.
S6
(No1~4 Screw Size=M4x10;
Torque=12 1KGFxCM).
Take off two cushion foams
S3
2
1
3
4
Use a Phillips-head screwdriver unscrew 1 screw
(No1 Screw Size=M4x10; Torque=7.5~9.5KGFxCM).
S7
1
ACER X193HQ
16
4. Assembly and Disassembly Procedures (continued)
Put the dissembled monitor closed to by myself
Separating all of the locking mechanism of the
S12
S8
front bezel in turn
RIGHT SIDE
D
OWN
U
P
S
I
D
E
S
I
D
E
LEFT SIDE
Wedge your finger between the front bezel and the
panel, then pry up on the front bezel to
S9
disengage the locking mechanism.
Turn over the LCD monitor (screen faced up).
S10
Hold the one upside corner of the front bezel
after separating the upside of the front bezel
Using properly force to pull up front bezel that
will let the locking mechanism of left side, right
side and down side separated
S13
Insert steel rule between panel and front bezel
.Using properly force to let the locking
mechanism of front bezel and rear cover
separated
S11
17
ACER X193HQ
4. Assembly and Disassembly Procedures (continued)
Unplug 2 lamp cables
Hold one side of down side that had been
S14
separated from front bezel
S17
Use properly force to pull up front bezel
Disconnect the FFC cable to the connector of
panel.
S18
Use finger to push the lock according to arrow
direction then take out the FFC cable
Unhook the key function board from front bezel,
disconnect the key function cable
S15
Take out lamp cables right through the No.1-2
square holes and separate the bracket chassis
module and LCD panel apart.
Use a Hex-head screwdriver unscrewed 4 screws
to release the DVI and D-SUB connectors
(No1~4Hex Nut screws
S19
S16
Size=M3x8;Torque=4.5~6.5KGFxCM).
1
2
1
2
3
4
ACER X193HQ
18
4. Assembly and Disassembly Procedures (continued)
Examine the panel surface accoring to inspection
Disconnect all of the cable
S20
S23
criteria. Put it aside.
P802
P304
P301
FFC
Use a Phillips-head screwdriver unscrewed the
No.1~2 screws to release the interface board.
(No1~2 screw size=M3x6; Torque=9~10KGFxCM).
S21
1
2
Use a Phillips-head screwdriver unscrewed the
No.1~4 screws to disassemble the power board.
(No 1~3 screw size=M3x6; No 4 screw
S22
size=M4x8; Torque=9~10KGFxCM).
2
1
4
3
19
ACER X193HQ
5. Troubleshooting
5.1 No display on the screen (Screen is black and colour of LED is amber.)
Does OSM display when you push
PROCEED buttom.
No
Proceed "No OSM display" section.
When a signal isn't being inputted, it is
indicated with "No Signal Input". it is
indicated with "Out Of Range" at the time
of the frequency that it can't be
distinguished.
Yes
Check if the sync signal from computer is
output and if the video cable is connected
normally.
Input the sync signal of computer, or change
the cable.
NG
OK
Proceed "checking the resolution change IC
movement" section.
ACER X193HQ
20
5. Troubleshooting (continued)
5.2 Nothing displays on the screen (Screen is black and colour of LED is blue.)
Is backlight lit?
NG
Refer "Checking the backlight unit" section"
OK
Check the video cable for failure. Check the host for output signal is all
black or not.
Does computer output RGB video signals?
1) Change pattern of video signal output on the host.
2) Reconnect the video cable.
3) Change the video cable.
NG
OK
Check OSM menu is display on screen
when you push the "PROCEED" key.
Check if the LCD video signal cable is connected between the Interface
Board and LCD module.
NG
OK
Failure Point
The LCD video signal cable is disconnected.
NG
OK
Proceed "Abnormal sreen" dection"
Next Page
21
ACER X193HQ
5. Troubleshooting (continued)
5.2 Nothing displays on the screen (Screen is black and colour of LED is blue)continued
Continue
Check the 5V power supply for
P305 pin 1,2,3.
NG
Check the I301 pin2 if
voltage is 3.3V
Proceed "Checking the DC/DC converter
NG
circuit" section.
OK
Proceed "Checking the DC/DC converter
Check the I309 pin2 if
voltage is 1.8V
NG
circuit" section.
OK
Failure Point
1) FB312 is open.
2) C353, C355 is short.
Check the I307 pin2 if
voltage is 5V
NG
OK
OK
Check if the voltage
between I307 pin2 and
pin3 is above -0.7V
Check if the Q311 pin2 of
Failure Point
PANEL Power_ON/OFF
signal that outputted by I305
pin10 is High level.
NG
NG
1) Printer wire between R411
and I305 pin10 is failure
2) I305 is failure.
OK
3) R413,C366 is short
OK
Failure Point
I307 is failure.
Failure Point
1) Printed wire between R311 pin3, R410,
R412, I307 pin1 is failure..
2) Q311 is failure.
Check the input voltage level whether was changed when
pressed function keys on the P304 pin 5 (normal is high level,
when push buttom, generated 2.2V/1.9V/0.7V)
NG
Check if the voltage on I305 pin 20 that is
from 3.3V to 0.7V.
Failure Point
OK
NG
OK
1) Printed wire broke between P304 pin 5
and I305 pin 20.
Failure Point
I305 is failure
Check the P305 all LVDS signals.
Failure Point
NG
1) Printed wire broke between P305 and
I305 LVDS signals.
2) I305 is failure.
OK
Failure Point
1) The LVDS cable broke between P305
and LCD module.
2) LCD module is failure.
ACER X193HQ
22
5. Troubleshooting (continued)
5.3 Checking the back light unit
Is +22V supplied to inverter PWB ? (by the
power board)
Failure Point
NG
1) Power board of Inverter part failure.
OK
Check the BKLT_EN signal of the DC input
P301 pin 1 at TTL high level.
Failure Point
NG
1) printed wire broke between P301 pin1,
R303 and I305 pin 88.
2) I305 is failure.
OK
Check the BKLT_ADJ signal of the input
P301 pin3 from I305 pin86 is a PWM
signal.
Failure Point
NG
1) printed wire broke between P301 pin3,
R304,R357 and I305 pin11.
2) Q302 is failure.
OK
Failure Point
1) Back light unit of LCD module is failure.
2) Inverter Cable disconnect
23
ACER X193HQ
5. Troubleshooting (continued)
5.4 Abnormal screen for VGA
Check the R, G, B video signal from computer
input on P302 of video connector.
Failure Point
NG
OK
1) No R, G, B video signals output from host
computer, check computer.
2) Video signal cable disconnection.
Check the R, G, B input video signals on I305
pin12, 14, 16 respectively that their level is 0.0 to
0.7Vp-p.
NG
Failure Point
OK
In the case of the Red signal. (A Green and Blue
signal is the same path, too.)
1) Printed wire broke between P302 pin1 and
I305 pin16.
2) Video cable is failure.
3) FB302,FB306,R327 is open.
4) R326 is short or open.
5) C315 is short or open.
Check all LVDS signals being output to P305
from I305?
NG
Failure Point
OK
Printed wire broke between I305 and P305.
Prpcess "Checking the resolution change IC
movement" section.
ACER X193HQ
24
5. Troubleshooting (continued)
5.5 Abnormal screen (For the DVI)
Check the DVI video signal from computer input
on P303 of DVI-I video connector.
Failure Point
NG
1) No DVI video signals output from host
computer, check computer.
2) DVI Video signal cable disconnection.
OK
Check the DVI input video signals on I305 pin
2,3,4,5,6,7,47,48 respectively that differential
input voltage is 150 to 1200mV, and input
commond mode voltage is 3.3V.
Failure Point
NG
In the case of the DVI_RX0+/- signal. (A
DVI_RX1+/-, DVI_RX2+/- and DVI_RXC+/-
signal is the same path, too.)
OK
1)Printed wire broke between P303 pin 17, 18 and
I305 pin 4. 15.
2) Video cable is failure.
3) R334, R335 open.
Check all LVDS signals being output to P305
from I305?
Failure Point
NG
Printed wire broke between I305 and P305.
OK
Prpcess "Checking the resolution change IC
movement" section.
25
ACER X193HQ
5. Troubleshooting (continued)
5.6 Abnormal OSM display adjust problem
Check the input TTL level whether was changed when
pressed function keys on the P304 pin3, 5 (normal is high
level, when push buttom, generated low level plus)
Failure Point
NG
OK
1) Function key wire disconnection.
2) Function key wire is failure.
3) Function key board is failure.
Check the input TTL level of I305 pin20, 21 whether was
changed when pressed function keys.
(Refer to Table 1)
NG
Failure Point
1) Printed wire broke among P304 pin3,R350 and I305 pin21
2) Printed wire broke among P304 pin5 ,R349 and I305 pin20
3) C358,C359 is short.
OK
4) R374, R375 is short or open.
5) D327,D328 is short
Failure Point
I305 is failure.
ACER X193HQ
26
5.7 Abnormal plug and play operation for VGA
Confirm the host computer supplies DDC2B mode.
NG
Failure Point
OK
The host machine is not communicatiog in DDC2B mode.
Check the voltage on P302 pin9 that is power DC 5 V.
NG
Failure Point
OK
TheVideo cable is failure.
Check the voltage on Q307 pin1 that is power DC
3.3V.
Failure Point
1) Printed wire broke between Q307 pin3,D325 and
P302 pin9
NG
OK
2) R369,R372,R363 is short or open.
3) D325 is failure or Q307,I304 is failure.
Check the signal on P302 pin12, 15 that is serial data
/ clock signal.
NG
Failure Point
OK
The Video cable is failure.
Check the output signal of serial data / clock on I305
pin5, 8.
Failure Point
NG
OK
I305 is failure.
Failure Point
1) Printed wire broke among I305 pin5,8,R320,R321and
P302 pin12,15
2) I305 maybe failure.
3) R424,R425 is open.
4) R328 or R330 or C330 or C331 is open or short.
5) R320 or R321 or D308,D306 is open or short
27
ACER X193HQ
5. Troubleshooting (continued)
5.8 Abnormal plug and play operation (For the DVI)
Confirm the host computersupplies DDC2 mode.
Failure Point
NG
The host machine is not communicatiog in DDC2 mode.
OK
Check the voltage on P303 pin14 that is power DC 5 V.
NG
Failure Point
OK
The Video cable is failure.
Check the voltage on P303 pin 16 that is 4.5V.
Failure Point
NG
1) Printed wire broke between P303 pin 14 and pin 16.
2) R340 is open.
3) C323 or C324 is short.
OK
Check the voltage on Q307 pin1 that is power DC 3.3
V.
Failure Point
1) Printed wire broke between VR307 pin3,D325 and
P303 pin14
NG
OK
2) R361,R372,R363 is short or open.
3) D325,Q307,I304 is failure.
Check the voltage on P303 pin 6, 7 that is serial data /
clock signal.
NG
Failure Point
OK
The Video cable is failure.
Check the output signal of serial data / clock on I305
pin 2.3
Failure Point
NG
OK
I305 is failure.
Failure Point
1) Printed wire broke between I305 pin2,3,R344,R345
and P303 pin6,7.
2) I305 maybe failure.
3) R422,R423 is open or short.
4) R344,R345 is open or C337,C336 and D321,D320 is
short
ACER X193HQ
28
5. Troubleshooting (continued)
5.9 Checking the interface circuit of sync signal
5.9.1 Checking the control circuit of horizontal sync pluse
Check the horizontal sync signal on P302 pin13 TTL
level.
NG
Failure Point
OK
Video cable is failure.
Check the horizontal sync signal on I308 pin9 TTL
level.
Failure Point
NG
OK
1) Printed wire broke between P302 pin13 and
I308 pin9.
2) FB304 , R309 is open.
3) D307 ,R319 or C322 is short.
Failure Point
Process "Checking the resolution change IC movement"
section.
5.9.2 Checking the control circuit of vertical sync pluse
Check the vertical sync signal on P302 pin14 TTL level.
NG
Failure Point
OK
Video cable is failure.
Check the horizontal sync signal on I308 pin8 TTL
level.
Failure Point
NG
OK
1) Printed wire broke between P302 pin14 and
I308 pin8.
2) FB305 or R308 is open.
3) D310,R318 or C313 is short.
Failure Point
Process "Checking the resolution change IC movement"
section.
29
ACER X193HQ
5. Troubleshooting (continued)
5.10 Checking the resolution change IC movement
Check +3.3V supply on I305 pin41,I308 pin1,46.
NG
Proceed " Checking the DC/DC converter circuit" section.
OK
Check +1.8V supply on I308 pin 19,17,40.
NG
Proceed " Checking the DC/DC converter circuit" section.
OK
Check X300 24MHz clock input to I305 pin 15 and 16 at TTL level.
Failure Point
NG
1) Printed wire broke between X300 and I305 pin 15, 16.
2) C340, C341 is short or open.
3) X300 failure.
OK
Failure Point
1) Printer wire broke between I305 pin 4 and
Check I305 pin 4 RST signal is low level at normal operation.
C345
2) C345 is short.
3) I305 is failure.
NG
OK
Check I305 pin 38,39,40 IIC signal.
Failure Point
NG
1) Printed wire broke between I305 pin 38, 39, 40 and I303 pin 5, 6,7.
2) R351,R352,R353 is open.
OK
3) R395,R396,R397 is open or short.
4) I303 is failure.
Failure Point
I305 failure.
ACER X193HQ
30
5. Troubleshooting (continued)
5.11 Checking the DC/DC converter circuit
Check the 5V is output from P301 pin 5,6
Failure Point
NG
OK
1) Power wire disconnection.
2) Power board is failure.
Check the 5V is input to I301 pin3.
NG
Failure Point
OK
1) Printed wire broke between P301 pin 5,6
and I308 pin3.
Check the 3.3V is output from I301 pin2, 4.
Failure Point
NG
OK
I301 is failure or C303,C304 short.
Check the 3.3V is input to I309 pin3.
Failure Point
NG
OK
1) Printed wire broke between I302 pin2. 4 and
I309 pin3.
Check the 1.8V is output from I309 pin2,4.
Failure Point
NG
OK
I309 failure or C368 short.
Failure Point
1) Printed wire broke between I301 pin2,4,I309 pin3,2,4
and I308
2) FB309,FB310 is open.
31
ACER X193HQ
6. Firmware Upgrade Process
6.1 Hardware Configuration
If it shows “No USB Device”, there is a problems with
communication .you should confirm your USB device
whether be detected by your PC device management or
reconnect the USB cable again.
Connect VGA
cable between
monitor and kit
Connect USB
and VGA
cable between
PC and kit
Step-3Select ISP icon.
6.2 Realtek F/W Configuration:
Step-1 Launch the utility of “DebugTool_V6.2.exe”
Step-2 Select “USB”
Step-4 Follow up the red square indication
Select “both”,”Checksum”,”Auto”,”Page Erase”,
Select “21” for Extend size.
ACER X193HQ
32
6. Firmware Upgrade Process (continued)
The screen will show “PASS”
Step-5 Select “64K” icon to load firmware image. There are two
HEX files. You only need to select “64K” to choose
“X203H_AAS_F001-EMEA.hex” and
“X203H_AAS_F001-EMEA_Extend.hex” will be loaded
in “64~96” automatically.
Check firmware version
Turn off the power,then press force on “ POWER ” and “ E ”
button at the same time then press on “ MENU ”button to
enter factory mode
Note: Please pay attention ,Don’t change any parameter
which is measured by precise machine before shipping out
Step-6Press
button
33
ACER X193HQ
7. Writing EDID Process
2. Writing VGA/DVI Process
1 Writing EDID Procedure
Chose the folder:”Acer-X193H-X203H-digital signal” or “Acer-
X193H-X203H” it depends on which model you want to write.
Acer-X193H-X203H be used in the monitor only has VGA
port.
Hardware Configuration:
1.)Connect the PRINTER PLUG of DDC FIXTURE with the
printer port of Desktop PC. (Refer to figure 1)
2.)Plug USB A PLUG of DDC FIXTURE to USB socket of
Desktop PC (Refer to figure 2)
Acer-X193H-X203H-digital signal be used in the monitor both
have VGA and DVI port
3.)Extend the DVI cable on DVI EXTENDING SOCKET of DDC
FIXTURE. (Refer to figure 3)
Select the “Acer-M1&M3-XPEDID-DVI-.exe” to execute it
4.1)Connect the D-sub plug of Chroma with D-SUB PLUG of
DDC FIXTURE (Refer to figure 4)
4.2) Take a video cable then connect the D-SUB PLUG and the
D-sub socket of monitor. (Refer to figure 5)
5.)Connect the extended DVI cable to DVI socket of monitor
(Refer to figure 5)
6.)Re-confirm all the connectors are connected well.
DVI EXTENDING
SOCKET
D-SUB PLUG
USB A
SOCKET
PRINTER PLUG
DVI EXTENDING
USB A
SOCKET
PLUG
3.Select Model: Key in password”cedid” then select model
which one you want to write EDID code that it depends on
panel type.
2
1
3
4
6
5
CAUTION: The timing of Chroma shall be setup at T254/ P41
before data recording. the detail setting parameter from
chroma .Please See below photo
cedid
ACER X193HQ
34
7. Writing EDID Process (continued)
4. Choose "WRITE" from menu then select "Scan S/N And
Write EDID And Test DDC”
5. Key in series number(22 characters) in the input column
and below empty column.
Press write button after key in S/N
6. When EDID was written successfully that will show below
message on the screen
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