Download Acer RA19WAANU Service manual

ACER
ACER_LCD_X193HQ_SM080904V1
Model ID:RA19WAANU
DBG DPBU II
Service
Service Manual
Table of Contents
Important Safety Notice------------------------------------------------------------------------------------- 01
01. Product Specification--------------------------------------------------------------------------------- 02
02. OSD Menu-----------------------------------------------------------------------------------------------08
03. Exploded Diagram ------------------------------------------------------------------------------------- 10
04. Assembly and Disassembly Procedures-----------------------------------------------------------12
05. Troubleshooting----------------------------------------------------------------------------------------19
06. Firmware Upgrade Procedure------------------------------------------------------------------------31
07. Writing EDID Procedure-------------------------------------------------------------------------------33
08. Block Diagram------------------------------------------------------------------------------------------ 35
Appendix I : User ’ s Manual
Appendix II : Spare Parts List
Appendix III: Software Pack
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
04th-Sept.-2008
Subject to modification
Important Safety Notice
ACER X193HQ
Go to cover page
Product Announcement:
This product is certificated to meet RoHS Directive and
! Using Lead-Free solder to well mounted the parts.
Lead-Free produced definition. Using approved critical
! The fusion point of Lead-Free solder requested in the
components only is recommended when the situation
to replace defective parts. Vender assumes no liability
express or implied, arising out of any unauthorized
modification of design or replacing non-RoHS parts.
Service providers assume all liability.
Qualified Repairability:
Proper service and repair is important to the safe,
reliable operation of all series products. The service
providers recommended by vender should being
aware of notices listed in this service manual in order
to minimize the risk of personal injury when perform
service procedures. Furthermore, the possible existed
improper repairing method may damage equipment or
products. It is recommended that service engineers
should have repairing knowledge, experience, as well
as appropriate product training per new model before
performing the service procedures.
NOTICE:
! To avoid electrical shocks, the products should be
connect to an authorized power cord, and turn off the
master power switch each time before removing the
AC power cord.
! To prevent the product away from water or expose
in extremely high humility environment.
! To ensure the continued reliability of this product,
use only original manufacturer’s specified parts.
! To ensure following safety repairing behavior, put the
replaced part on the components side of PWBA, not
solder side.
! To ensure using a proper screwdriver, follow the
torque and force listed in assembly and disassembly
procedures to screw and unscrew screws.
degree of 220 ° C.
1
2
ACER X193HQ
1. Product Specification
Go to cover page
1.1 SCOPE
The LCD monitor consists of an interface board , a power
This document defines the design and performance
board , a function key board and two speaker(1W)(with audio)
requirements for a 19W inch diagonal , flat panel monitor
The interface board will house the flat panel control logic ,
.The display element shall be a WXGA(1366X768)
brightness control logic, audio function control (option), key
resolution TFT-LCD (Thin Film Transistor Liquid Crystal
function control, DDC and DC to DC conversion to supply the
Display).16.7M color images are displayed on the
appropriate power to the whole board and LCD flat panel , and
panel.Video input signals are analog RGB (0.7Vp-p). When
transmitting LVDS signals into LCD flat panel module to drive
the systemis powered-on , previously stored screen
the LCD display circuit .The power board will support main
parameters for a pre-defined mode will be recalled if the
power DC5V to interface board and drive the two CCFLs (Cold
operating mode is one of stored in memory( 21 factory , 9
Cathode Fluorescent Tube).The interface board provides the
users timing ).This monitor operates normal by non-
power ON / OFF control over the whole monitor and control for
interlaced mode. DDC (Display Data Channel) function is
DPMS LED indicator to function key board.
DDC2Bi compliance Power saving function complies with
Monitor Specifications
the DPMS (Display Power Management Signaling)
standard.
ITEM
Signal
Input
SPEC
Frequency
（Analog）
Analog
H:31Hz~83Hz
1.2 GENERAL REQUIREMENTS
V:56Hz~75Hz
Pixel Clock
1.2.1Test Condition
Video Input
135MHz(Max)
Analog :07Vp-p
640x480 (VGA)~1366x768(WXGA)
Brightness level & contrast level max. Full white
pattern test mode following spec. Warm up more than
1 hr, ambient light < 10 Lux , Luminance meter
Display Pixels
Signal
Input
Syne Signal
Separate
Frequency
Digital
（Digital）
V:56Hz~75Hz
Pixel Clock
CA110 or BM7 or same equipment .
Video Input
1.2.2 Test Equipment
Connector
AC
2135 video generator or higher.The use of other
signal generators during qualification and production
Input
AC 100V~AC240V 10% 50/60Hz ,3pin AC Power Cord
D-SUB 15 pin &DVI -D
Audio Jack(Optional )
Audio Input 3.6 Φ
AC in 100V~240V)
Active 30W(with Audio), active 25W ,Power Saving <2W
User'sControl
Front
Empowering ,Auto Adjust ,Adjust (-),Adjust (+),,Menu ,Power
OSD
Contrast,Brightness ,Position ,Clock ,Phase ,
Analog/Digital, RESET, Color ,Language select ,
Audio (Option ),ect.
Pre-Defined Timing
Factory
User
This section describes the electrical requirement of the
640x480 (VGA)~1366x768(WXGA)
Input Connector
Plug and Play
1.3 ELECTRICAL
Analog :07Vp-p
Power Consumption
is acceptable provided the product complies with this
specification.
135MHz(Max)
Input Inpedance 75Ω
Display Pixels
The reference signal source is a calibrated Chroma
SYNC for TTL (N or P)
H:31Hz~83Hz
21
9
VESA DDC 2Bi
Power Saving
VESA DPMS
Input Signal Counter Tolerance
≦H 1kHz,≦V 1Hz
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)
Go to cover page
Pin
Signal
Pin
Signal
Pin
Signal
1
Red-Video
6
Red-GND
11
NC
2
Green-Video
7
Green-GND
12
DDC-SDA
3
Blue-Video
8
Blue-GND
13
H-SYNC
4
NC
9
+ 5V
14
V-SYNC
5
Connection Detect
10
GND
15
DDC-SCL
No.
Symbol
1
Fh
Horizontal Frequency
2
Fv
Vertical Frequency
3
Vih
Hi Level Input
4
Vil
0
Connector Pin Description
5
Video
Name
Red-Video
Red video signal input
2
Green-Video
Green video signal input
3
Blue-Video
Blue video signal input
4
NC
Not connect
5
Connection Detect
Deteck VGA Cable have Connected or not
6
Red-GND
Analog signal ground for the Red video
7
Green-GND
Analog signal ground for the Green video
Blue-GND
31
Unit Remark
83
kHz Minimum range
56
75
Hz
Minimum range
2.0
5.0
V
Note 1)
0.8
V
Note 1)
0.1
V
75Ω to Ground
0.7
0.0
V id e o I n p u t S ig n a l
N o.
9
Low Level Input
RGB Analog Video
Level
Max
H(&V) sync output from PC
Description
1
8
Min Normal
Note 1) Schmitt-Triggers Input, Supported 3.3V device
D-SUB Description
Pin
Item
Analog signal ground for the Blue video
+5V
Sync-GND
11
NC
Not connect
12
NCDDC-SDA
SDA signal input for the VESA DDC 2Bi function
13
H-SYNC
Horizontal signal input from the host system
14
V-SYNC
Vertical signal input from the host system
15
DDC-SCL
SCL signal input for the VESA DDC 2Bi function
Ite m
M in
N orm al
M ax
U n it
R em ark
1
Fh
S c a n n in g H o r iz o n ta l F r e q u e n c y
30
94
kH z
M in im u m r a n g e
2
3
Fv
V ih
S c a n n in g V e r tic a l F r e q u e n c y
H i L ev el In p u t
55
2
76
5
Hz
M in im u m r a n g e
N o te 1 )
4
V il
L o w L ev el In p u t
5
V id e o
R G B A n a lo g V id e o L e v e l
0
0 .0
0 .7
0 .8
V
N o te 1 )
1 .0
V
7 5 Ω to G r o u n d
N o te 1 ) S c h m itt- T r ig g e r s I n p u t , S u p p o r te d 3 .3 V d e v ic e H ( & V ) s y n c o u tp u t fr o m P C .
+5V input from host system for the VESA DDC 2Bi function
10
Sym bol
Signal ground
1.3.2.1 Video Signal Amplitudes
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
DVI-I/DVI-D(If using DVI-D cable,C1,C2,C3,C4,C5 is NC)
Pin
Signal
Pin
Signal
Pin
signal amplitude for the respective color, when each
1
RX2-
13
NC
C1
Analog Red(NC)
2
RX2+
14
5V
C2
Analog Green (NC)
3
GND
15
DVI Connect
C3
Analog Blue (NC)
4
NC
16
HP
C4
Analog H-Sync (NC)
5
NC
17
RX0-
C5
GND
6
SCL
18
RX0+
7
SCA
19
GND
8
Analog V-Sync(NC)
20
NC
9
RX1-
21
NC
10
RX1+
22
GND
11
GND
23
RXC+
12
NC
24
RXC-
V corresponds to black , and 700 mV is the maximum
Signal
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.
1.3.2.2 Video Signal Termination Impedance
This analog video signal termination shall be 75Ω+/-1%
DVI-I/DVI-D
Connector
Pin
Description
which shall be resistive with a negligible reactive
Pi
Pin
Name
Desription
n Name
Desription
1
RX2-
TMDS link #0 channel #2 differential pair
16 HP
Hot plugging
component .
2
RX2+
TMDS link #0 channel #3 differential pair
17 RX0-
TMDS link #0
change #1 differential
pair
3
GND
GND for no link share
18 RX0+
TMDS link #0 change #1 differential
pair
4
NC
NC
19 GND
GND for no link share
5
NC
NC
20 NC
NC
6
SCL
Clock line for DDC interface
21 NC
NC
7
SDA
Data
22 GND
Clock shield
8
Analog V-Sync V-sync for analog interface
23 RXC+
TMDS clock differential pair
9
RX1-
TMDS link #0
change #1 differential
pair
24 RXC-
TMDS clock differential pair
10
RX1+
TMDS link #0
change #1 differential
pair
C1 Analog Red
Analog Red signal
11
GND
GND for no link share
C2 Analog Green
Analog
12
NC
NC
C3 Analog Blue
Analog Blue signal
13
NC
NC
14
5V
15
DVI Connect
line for DDC interface
+5V input from host system for
C5 Analog GND
The Horizontal Sync (HS) TTL signal is used to initiate
the display of a horizontal line. HS may be either active
Green signal
C4 Analog H-Sync H-Sync for analog interface
DDC 2B function
1.3.2.3 Synchronization ( Sync ) Signals
Analog GND
Using as Detect Cable
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
1.3.2.4 Sync Signal Levels
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
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
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 .
ACER X193HQ
4
1. Product Specification (continued)
Go to cover page
1.3.2.5 Sync Signal Loading
1.3.3.4 OSD adjustment
TTL input loading shall be equivalent to one TTL
ITEM
input load. When logic 0 is asserted by a sync
AUDIO VOLUME
input , the maximum current source from any
CONTENT
To increase or decrease the sound level
BRIGHTNESS
Back light Luminance of the LCD panel is adjusted.
single monitor sync input to the driver is 1.6 mA
CONTRAST
A gain of R , G and B signal is adjusted.
.When logic 1 is asserted , the maximum current
AUTO CONTRAST
A gain of R , G and B signal auto adjust.
source from the driver to any single monitor sync
CLOCK
The ratio of dividing frequency of the dot clock is adjusted.
input is 400 uA .
PHASE
The phase of the dot clock is adjusted.
H-POSITION
The indication screen is horizontally moved right and left (1 Pixels pitch).
1.3.2.6 Abnormal Signal Immunity
The monitor shall not be damaged by improper
V-POSITION
The indication screen is vertically moved up and down (1 Pixels pitch).
AUTO ADJUST
Clock system auto adjustment, about under 8 sec.
sync timing , pulse duration , or absence of sync ,
COLOR BALANCE
Select three kinds of modes. ( USER /6500 / 9300 ).
or abnormal input signal amplitude ( video and/ or
OSD POSITION
The OSD indication position can be adjusted.
sync too large or too small) , or any other
OSD LANGUAGE
Select the language used for the OSD menu among English , French ,
Italian , Deutsch and Spanish.
anomalous behavior of a graphics card video
RECALL DEFAULTS All data copy from factory shipment data.
generator when changing modes , or when any
combination of input signals is removed or replaced
OSD DURATION
Adjust OSD menu off time range from10~120 second.
POWER-SAVE
Back light of the LCD panel is cut when the signal is not input (AC line
power consumption 2W or less).
INFORMATION
The frequency of the horizontal / vertical synchronizing signal under the
input is indicated.
. Additionally , under these conditions , the monitor
shall not cause damage to the driving source
1.3.3 User Controls and Indicators
※ NOTE : OSD MENU SEE APPENDIX A
1.3.3.1 Power On / Off Switch
1.3.4 Monitor Modes and Timing Capability
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
1.3.4.1 Format and Timing
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,
1.3.3.2 Power Indicator LED
the monitor shall display a warning screen
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.
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 le 1
F u n c tio n
indicating that the input frequency is out of range.
L E D
C o lo r
F u ll P o w e r
B lu e c o lo r
S le e p
O ra n g e c o lo r
There are 21 factory pre-set frequency video
modes. These modes have a factory pre-set for all
characteristics affecting front-of-screen
1.3.3.3 On-Screen Display
performance. When the system is powered-
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.
K ey
W hen
no
M enu
D is p la y
O SD
d is p la y
O SD
D is p la y e d
1. To
d is p la y
th e
m enu
on
th e
sc re e n .
2 . T o s e le c t th e O S D s u b -M e n u
>
1 . F o rw a rd
2 . In c re a se
<
S p e a k e r V o lu m e /P lu s
(w ith A u d io )
1 . B a c k -fo rw a rd s e le c tio n o f th e O S D m e n u .
2 . D e c re a s e th e v a lu e a fte r s u b -m e n u s e le c te d .
A u to
M e n u o r s u b .m e n u E X I T /A u to A d ju s t f u n c tio n .
E
A d ju s t F u n c tio n
E m p o w e rin g
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
horizontal scanning frequency to the mode being
currently used. The screen parameters may be
then may be saved as a user defined mode. The
O SD
S p e a k e r V o lu m e /M in u s
(w ith A u d io )
A u to
defined mode will be recalled if the operating
adjusted by the use of the front bezel controls and
D e s c rip tio n
M EN U
on,previously stored screen parameters for a pre-
s e le c tio n o f th e O S D m e n u .
th e v a lu e a fte r s u b -m e n u s e le c te d .
M e n u o r s u b .m e n u E X I T /S c e n a r io m o d e
monitor shall include all the preset video timings
shown in the following page.(Please see Note.(3) )
ACER X193HQ
1. Product Specification (continued)
5
Go to cover page
1.3.4.3 Mode Recognition Pull-in
1.3.5.2 Video Stretching
The monitor shall recognize preset modes within a
The monitor shall contain provisions to “stretch” the
range of +/-1KHz whichever is less for horizontal ;
video signal, so that an input signal from the
and within +/-1Hz for vertical.
computer in any resolution smaller than 1366 x
1.3.4.4 User Display Modes
768 is automatically expanded to fill the entire
In addition to the factory pre-set video modes,
screen.
provisions shall be made to store up to 9 user
1.3.5.3 Panel Timing and Interface
modes. If the current mode is a user mode, the
The controller supplied with the monitor shall
monitor shall select its previously stored settings.
control all panel timing. This controller shall
If the user alters a setting, the new setting will be
adequately insulate the monitor from the computer,
stored in the same user mode. The user modes
so that no possible combination of input signals
are not affected by the pre-set command. If the
from the computer shall cause damage to the flat
input signal requires a new user mode, storage of
panel or any other component of the monitor. The
the new format is automatically performed during
LCD panel interface shall support the TFT
user adjustment of the display (if required).(
standard.
Please see Note.(4) )
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
Preset Timing Chart
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
H-Sync V-Sync Band Width Polarit
Source
(KHz) (KHz)
(MHz)
H V
T103
640x480@60Hz
31.469 59.941
25.175
- - VESA
T173
640x480@72Hz
37.861 72.809
31.500
- - VESA
T109
640x480@75Hz
37.500 75.000
31.500
- - VESA
T182 [email protected]
35
66.66
30.24
- - MAC
T102
720x400@70Hz
31.469 70.087
28.322
- + VGA
T104
800x600@56Hz
35.156 56.250
36.000
+ + VESA
T116
800x600@60Hz
37.879 60.317
40.000
+ + VESA
T117
800x600@72Hz
48.077 72.188
50.000
+ + VESA
T110
800x600@75Hz
46.875 75.000
49.500
+ + VESA
T108 [email protected] 49.722 74.55
57.28
- - VESA
T118 1024x768@60Hz
48.363 60.004
65.000
- - VESA
T157 1024x768@70Hz
56.476 70.069
75.000
- - VESA
T141 1024x768@75Hz
60.023 75.029
78.750
+ + VESA
T203 1152x870@75Hz
68.700 75.000
84.520
- T126 1152x864@75Hz
67.5
75
108
+ +
T161 1280x960@60Hz
60
60
108
+ + VESA
T179 1280x1024@60Hz 63.981 60.020
108.000
+ + VESA
T131 1280x1024@75Hz 79.976 75.025
135.000
+ + VESA
T339 1280x720@60Hz 44.955 59.940
+ +
74.176
T213 1280x800@60Hz 49.702 59.810
+ +
83.500
T278 1366x768@60Hz 47.712 59.790
- 85.500
No
backlight shall be chosen so as to prevent any noticeable
Resoulution
effects on the flat panel (such as a rolling effect).
1.3.7 Power Supply Requirements
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.
Table 2. AC TO DC Converter Requirements
Table 2
AC to DC Converter Requirements
Input Voltage Range
Input Frequency Range
The operating range shall be from 90 to 132 and 195 to 265 AVC
sinusoidal for all models specified.
Input power frequency range sha;; be from 47.
5 to 63 Hz over the
specified input voltage range.
Power consumption for the monitor shall be less than
30W over the
1.3.5 Controller Requirements
1.3.5.1 General Requirements
Power Consumption
specified voltage and frequency ranges. In suspend or sleep mode
the power consumption will be less than 2W.
Line Fuse
The AC input shall be fused and become electrically open as a result
on an unsafe current level. The fuse many not be user replace
able.
The monitor shall include a controller capable of
The power supply shall start and function properly when under full
converting the analog RGB signal from a standard
Initial Cold Start
load, with worst case conditions of input voltage, input frequenct,
operating temperature, and cold backlight lamps.
SXGA resolution video controller in the CPU to a
signal which can be displayed on the panel. The
The inrush current must be limited to 30A when operated at
Inrush Current
controller will include a PLL, A/D converters, LVDS
120VAC, and 50A when operated at 220VAC. Inrush current is
oC, with the unit
measured at an ambient temperature of 25
temperature stabilized in the power
-off.
The power supply shall be damaged when switched ON for one
transmitter and other circuitry necessary to perform
Hot Start Cycle
its function. The PLL shall be stable enough to
operating for one hour at full load, 25
oC, and nominal input line
voltage.
ensure that a static image from the CPU is placed
in the same physical location on the flat panel in
second and OFF for one second for seven consecutive after
The power supply shall contain protectio
n circuitry such that the
Under Voltage
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.
each frame.
The power supply shalloperate within IEC 801
-4 (± 1KV) and IEC
Line Transient
801-5 (± 2KV) for the domestic U.S. version. The UPS power
supply shall operate and comply with CE mark.
6
ACER X193HQ
1. Product Specification (continued)
Go to cover page
1.3.8 Display Communications Channel
The lamps shall extend a sufficient amount from
The monitor assembly shall provide a display
the edge of the light guide that sputtering over the
communications channel that conforms to VESA
life of the lamps shall not cause degradation of the
DDC2Bi hardware requirements. This configuration
luminance uniformity (such as non-illuminated
shall contain the 128-byte EDID file as specified by
bands along the edges of the display).
VESA EDID standard.The monitor should not write to
1.4.4.2 Lamps Startup Time
the EDID file for the first two minutes of operation
The backlight lamps shall start about 2 sec of the
following power-up UNLESS some action taken by the
time the monitor power switch is pressed or the
user or the host CPU forces the write (for instance,
monitor is restarted from a power - down mode
requesting the serial number via the OSD).
.The starting time shall stay about 2 sec. for the
Furthermore, it is recommended that CMOS switches
minimum expected life of the lamps.
be incorporated to isolate the DDC IC from outside
Test conditions are as follows :
connections while the EDID Fault Management is
Ambient Light ----------------------
< 1.0 lux
being updated. This is to prevent corruption of the data
Temperature--------------------------
10℃
by attempts to read the data while it is being changed.
Inactive Time -----------------------
> 24 hours
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.
1.4 PANEL ELECTRICAL
1.4.1 General Requirements
1.4.5 Defects
1.4.5.1 Visual Inspection
The LCD panel shall be inspected with all pixels
set to white,black , red , green , and blue. The color
variation, brightness variation , and overall
The panel used as the display device shall be an
appearance must not be perceived as poor quality
WXGA 1366X768 resolution, 19 inch-wide TFT-LCD.
by Lite-On . Areas and / or parameters considered
This panel shall be approved for use in this monitor.
questionable shall be subjected to detailed
1.4.2 Panel Timings
The controller included with the monitor shall translate
measurements .
1.4.5.2 Display Degradation
all video timings from the CPU that meet the timing
Over the life of the product , variation of the
requirements listed in Panel specification into timings
parameters specified in Panel specification shall
appropriate for the panel. Under no circumstances
be maintained within reasonable limits.The panel
may the controller supply the panel with timings that
must not exhibit any significant defects while in
may result in damage. The controller shall insulate the
operation ( excluding the CCFL operation ).This
panel from the CPU , so that the panel shall always be
does not in any way change the warranty given by
driven per it's own specification regardless of the
the panel manufacturer .
timings being sent from the CPU.
1.4.3 Polarizer Hardness
1.4.5.3 Light Leakage
Except for the active display area , there shall be
The outer face of the front polarizer panel shall be
no light emission visible from any angle from any
covered with a coating with a # 3 hardness value .
other part of the display . For this test , the ambient
1.4.4 Backlight Requirements
1.4.4.1 General Requirements
illumination must follow panel's specification.
1.4.5.4 Allowable Defects
The backlight assembly shall be designed to
No cosmetic defects are allowed except those
support field replacement at the customer site
specified below.The conditions of visual
or authorized service center. The lamps shall
inspections are as follows
have a continuous operating life of at least
For P19W Series.
40,000 hours at 25 degree. The operating life is
■Viewing distance is to be approximately 35-50cm
defined as having ended when the illumination
of light has reached 50% of the initial value.
■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.
1. Product Specification (continued)
ACER X193HQ
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1.4.5.5 Defect Terminology
1.5 Optical Characteristics
Table 3 gives the descriptive terms used in classifying
Depends on the LCD supplier's spec. Details refer to QA
defects.
Inspection Spec.
D a rk / S p o ts / L in e s
S p o ts o r lin e s th a t a p p e a r d a rk in th e d is p la y p a tte rn s a n d a re
u s u a lly th e re s u lt o f c o n ta m in a tio n . D e fe c ts d o n o t v a ry in
s iz e o r in te n s ity (c o n tra s t) w h e n c o n tra s t v o lta g e is v a rie d .
C o n tra s t v a ria tio n c a n b e a c h ie v e d th ro u g h th e u s e o f v a ry in g
g ra y s h a d e p a tte rn s .
B rig h t S p o ts / L in e s
S p o ts o r lin e s th a t a p p e a r lig h t in th e d is p la y p a tte rn s .
D e fe c ts d o n o t v a ry in s iz e o r in te n s ity (c o n tra s t) w h e n
c o n tra s t v o lta g e is v a rie d . C o n tra s t v a ria tio n c a n b e a c h ie v e d
th ro u g h th e u s e o f v a ry in g g ra y s h a d e p a tte rn s .
P o la riz e r S c ra tc h
W h e n th e u n it lig h ts , lin e s a p p e a r lig h t (w h ite ) w ith d is p la y
p a tte rn s d a rk a n d d o n o t v a ry in s iz e . P h y s ic a l d a m a g e to th e
p o la riz e r th a t d o e s n o t d a m a g e th e g la s s
P o la riz e r D e n t
W h e n th e u n it lig h ts , s p o ts a p p e a r lig h t (w h ite ) w ith d is p la y
p a tte rn s d a rk a n d d o n o t v a ry in s iz e . P h y s ic a l d a m a g e to th e
p o la riz e r th a t d o e s n o t d a m a g e th e g la s s .
R u b b in g L in e
N e w to n R in g
H o riz o n ta l o r d ia g o n a l lin e s th a t a p p e a r g ra y w ith th e d is p la y
p a tte rn s d a rk a n d m a y h a v e re s u lte d fro m a n “ o u t o f c o n tro l”
ru b b in g p ro c e s s o n th e p o ly im id e o r “ w a v e s ” o n th e B E F s o r
p ris m s h e e ts .
T h e “ ra in b o w ” e ffe c t c a u s e d b y n o n -u n ifo rm c e ll th ic k n e s s .
W h e n th e u n it lig h ts , v a ria tio n / n o n – u n ifo rm ity
(s p lo tc h in e s s ) a p p e a rs lig h t (w h ite ) w ith th e d is p la y a n d
m ig h t v a ry in s iz e .
W h e n th e u n it lig h ts , lin e (s ) in th e m o n ito r (v e rtic a l) o r m a jo r
(h o riz o n ta l) a x is a p p e a r d im , b u t n o t c o m p le te ly o n o r o ff.
M o ttlin g
D im L in e
C ro s s L in e s O ff
W h e n th e u n it lig h ts , lin e s in b o th th e m in o r a n d m a jo r a x is
d o n o t a p p e a r.
B rig h t / D a rk D o t
A s u b – p ix e l (R ,G ,B d o t) s tu c k o ff / o n (e le c tric a l).
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
(L+W)/2 or L/20+2W
Acceptable Number
Minimum Separation
< 0.1mm
Non countable
N/A
0.1 mm ~ 0.3 mm
10
15 mm
0.31 mm ~ 0.5 mm
10
15 mm
0.51 mm ~ 1.25 mm
5
15 mm
1.26 mm ~ 2.5 mm
3
25.4 mm
2.51 mm ~ 3.75 mm
3
25.4 mm
Greater than 3.75 mm
NONE
Not applicable
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.
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ACER X193HQ
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2 OSD Menu
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2.1 MAIN OSD MENU
Outline:
The description for control function:
The description for control function:
M a in
M enu
Ic o n
Sub
Menu
Ic o n
Sub Menu
Ite m
N /A
W a rm
N /A
Cool
D e s c r ip tio n
S e t th e c o lo r te m p e r a tu r e to
w a r m w h ite .
S e t th e c o lo r te m p e r a tu r e to
c o o l w h ite .
U s e r /R e d
U s e r /G r e e n
A d ju s ts R e d /U s e r /G r e e n
G r e e n /B lu e in te n s ity .
U s e r /B lu e
N
N
N
N
N
N
N
N
/A
/A
/A
/A
/A
/A
/A
/A
E n g lis h
D e u ts c h
F r a n c a is
E spanol
Ita lia n o
H . P o s itio n
V.
P o s itio n
OSD
T im e o u t
N /A
A u to C o n fig
N /A
A n a lo g
N /A
D ig ita l
N /A
D D C /C I
s w itc h
N /A
In fo r m a tio n
N /A
R eset
N /A
E x it
M u lti-la n g u a g e s e le c tio n .
A d ju s t th e h o r iz 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 r tic a l p o s itio n
o f th e O S D .
A d ju s t th e O S D tim 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 r e .
(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 fr o m
a n a lo g (D -S u b )
(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 fr o m
d ig ita l (D V I)
(O n ly D u a l In p u t M o d e l)
S e le c t th e D D C /C I O N o r
OFF
S h o w th e r e s o lu tio n , H /V
fr e q u e n c y ,S N a n d
in p u t p o r t o f c u r r e n t in p u t
tim in g .
C le a r e a c h o ld s ta tu s o f
A u to -c o n fig u r a tio n
a n d s e t th e c o lo r
te m p e r a tu r e to W a r m .
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 .
A d ju s tm e n t
R ange
N /A
N /A
R e s e t V a lu e
T h e c o lo r
te m p e r a tu r e w ill b e
s e t to c o o l.
0 -1 0 0
100
0 -1 0 0
100
0 -1 0 0
100
N /A
T h e la n g u a g e w ill
b e s e t to E n g lis h
0 -1 0 0
50
0 -1 0 0
50
1 0 -1 2 0
10
N /A
N /A
N /A
N /A
N /A
N /A
N /A
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 .
N /A
N /A
N /A
N /A
N /A
N /A
2. OSD Manu (continued)
ACER X193HQ
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9
10
ACER X193HQ
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3.1 Packing Exploded Diagram
3. Exploded Diagram
3. Exploded Diagram (continued)
ACER X193HQ
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3.2 Product Exploded Diagram
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ACER X193HQ
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4. Assembly and Disassembly Procedures
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4.1 Assembly procedures:
Connect the cable between power board(P802)
S1
and interface board (P301)
S4
Connect the function key cable into interface
Take the key function cable out from the hole
shown as photo
Fix the function key cable with a PVC tape
board(P304)
Connect the FFC cable into interface board
P802
P304
P301
FFC
Turn the monitor faced down and put it on the
S5
S2
bracket chassis module till both parts firmly
Use a Phillips-head screwdriver screwed the
Connect FFC cable to LCD panel. There are
No.1~4 screws till that power board and bracket
two locks over here when plugging in should
chassis base firmly attached.(No1~3 screw
be noticed
size=M3x6; No4 screw size=M4x8;
Torque=9~10KGFxCM).
1
2
4
3
Use a Phillips-head screwdriver screwed the
S3
No.1~2 screws till that interface board and bracket
chassis base firmly attached.
(No1~2 screw size=M3x6; Torque=9~10KGFxCM).
Plug in parallel direction
1
2
Angel < 5 degrees
ACER X193HQ
4. Assembly and Disassembly Procedures (continued)
13
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S6
Take lamp cables out from the holes shown as the
photo.
S10
Put a rear cover on the assembled unit and
press on force mechanisms locked and firmly
attached.
4
4
3
3
2
2
1
S7
Plug 2 lamp cables to the connectors of inverter
Use a Phillips-head screwdriver screw 1 screw
S11
board.
1
(No1 Screw Size=M4x10; Torque=7.5~9.5KGFxCM).
1
Use a Hex-head and Phillips-head screwdriver
S8
screwed the DVI and D-SUB connectors (No.1~4
Assemble the stand upper side to the rear cover
S12
through the way of screwing 4 screws till both
Hex Nut screws
units firmly attached.
Size=M3x8;Torque=6.5±0.5KGFxCM).
(No1~4 Screw Size=M4x10; Torque=12±
Torque=6.5±0.5KGFxCM).
1 KGFxCM).
1
2
1
2
3
4
S9
4
3
Take a key function board to hook with front
bezeland connect to key function cable.
S13
Assemble the hinge cover into both two sides
ACER X193HQ
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4. Assembly and Disassembly Procedures (continued)
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Stick a screen card on the front bezel with two
S14
tapes.
S18
Put accessories of stand, DVI cable, and
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
S19
Take a LDPE+EPE bag to cover the LCD
S16
Move previous assembled parts into the carton
then stick Vista and feature label on the carton
then packing the carton
monitor.
FEATURE LABEL
VISTA LABEL
Take two cushion foams; one is held the left side
S17
of LCD monitor, and another is held the right side.
.
ACER X193HQ
4. Assembly and Disassembly Procedures (continued)
15
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4.2 Disassembly procedures
S1
Open the carton with a proper tool.
S4
Put returned unit on a protective cushion,then
remove LDPE+EPE bag.
Tear off tapes to remove the screen protector
card then turn over the LCD monitor (screen
FEATURE LABEL
faced down),
VISTA LABEL
S2
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.)
S5
POWER CABLE
Disassemble the stand cover.
DVI CABLE
D-SUB CABLE
USER’S MANUAL
S6
Use a Phillips-head screwdriver unscrew 4 screws
to release the stand base.
(No1~4 Screw Size=M4x10;
Torque=12±1KGFxCM).
Take off two cushion foams
S3
1
2
3
4
Use a Phillips-head screwdriver unscrew 1 screw
S7
(No1 Screw Size=M4x10; Torque=7.5~9.5KGFxCM).
1
ACER X193HQ
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4. Assembly and Disassembly Procedures (continued)
Go to cover page
Put the dissembled monitor closed to by myself
S8
S12
Separating all of the locking mechanism of the
front bezel in turn
RIGHT SIDE
DOWN SIDE
UP SIDE
LEFT SIDE
S9
Wedge your finger between the front bezel and the
panel, then pry up on the front bezel to
disengage the locking mechanism.
Turn over the LCD monitor (screen faced up).
S10
S13
S11
Insert steel rule between panel and front bezel
.Using properly force to let the locking
mechanism of front bezel and rear cover
separated
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
4. Assembly and Disassembly Procedures (continued)
ACER X193HQ
17
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S14
Hold one side of down side that had been
separated from front bezel
Use properly force to pull up front bezel
Unplug 2 lamp cables
S17
S18
S15
Disconnect the FFC cable to the connector of
panel.
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
Take out lamp cables right through the No.1-2
S16
Use a Hex-head screwdriver unscrewed 4 screws
to release the DVI and D-SUB connectors
S19
square holes and separate the bracket chassis
module and LCD panel apart.
(No1~4Hex Nut screws
Size=M3x8;Torque=4.5~6.5KGFxCM).
1
1
2
4
3
2
ACER X193HQ
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4. Assembly and Disassembly Procedures (continued)
Go to cover page
Examine the panel surface accoring to inspection
S20
Disconnect all of the cable
S23
criteria. Put it aside.
P802
P304
P301
FFC
S21
Use a Phillips-head screwdriver unscrewed the
No.1~2 screws to release the interface board.
(No1~2 screw size=M3x6; Torque=9~10KGFxCM).
1
2
S22
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
size=M4x8; Torque=9~10KGFxCM).
1
3
2
4
ACER X193HQ
5. Troubleshooting
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5.1 No display on the screen (Screen is black and colour of LED is amber.)
Does OSM display when you push
PROCEED buttom.
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.
No
Proceed "No OSM display" section.
NG
Input the sync signal of computer, or change
the cable.
Yes
Check if the sync signal from computer is
output and if the video cable is connected
normally.
OK
Proceed "checking the resolution change IC
movement" section.
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ACER X193HQ
5. Troubleshooting (continued)
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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
Does computer output RGB video signals?
NG
OK
Check the video cable for failure. Check the host for output signal is all
black or not.
1) Change pattern of video signal output on the host.
2) Reconnect the video cable.
3) Change the video cable.
Check OSM menu is display on screen
when you push the "PROCEED" key.
NG
OK
Check if the LCD video signal cable is connected between the Interface
Board and LCD module.
Failure Point
NG
OK
Proceed "Abnormal sreen" dection"
Next Page
The LCD video signal cable is disconnected.
ACER X193HQ
5. Troubleshooting (continued)
21
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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
NG
Proceed "Checking the DC/DC converter
circuit" section.
NG
Proceed "Checking the DC/DC converter
circuit" section.
OK
Check the I309 pin2 if
voltage is 1.8V
OK
Check the I307 pin2 if
voltage is 5V
OK
Failure Point
1) FB312 is open.
2) C353, C355 is short.
NG
OK
Check if the voltage
between I307 pin2 and
pin3 is above -0.7V
Check if the Q311 pin2 of
PANEL Power_ON/OFF
signal that outputted by I305
pin10 is High level.
NG
OK
NG
OK
Failure Point
I307 is failure.
Failure Point
1) Printer wire between R411
and I305 pin10 is failure
2) I305 is failure.
3) R413,C366 is short
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
Failure Point
Check the P305 all LVDS signals.
I305 is failure
Failure Point
NG
OK
Failure Point
1) The LVDS cable broke between P305
and LCD module.
2) LCD module is failure.
1) Printed wire broke between P305 and
I305 LVDS signals.
2) I305 is failure.
1) Printed wire broke between P304 pin 5
and I305 pin 20.
22
ACER X193HQ
5. Troubleshooting (continued)
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5.3 Checking the back light unit
Is +22V supplied to inverter PWB ? (by the
power board)
Failure Point
NG
OK
1) Power board of Inverter part failure.
Check the BKLT_EN signal of the DC input
P301 pin 1 at TTL high level.
Failure Point
NG
OK
1) printed wire broke between P301 pin1,
R303 and I305 pin 88.
2) I305 is failure.
Check the BKLT_ADJ signal of the input
P301 pin3 from I305 pin86 is a PWM
signal.
Failure Point
NG
OK
Failure Point
1) Back light unit of LCD module is failure.
2) Inverter Cable disconnect
1) printed wire broke between P301 pin3,
R304,R357 and I305 pin11.
2) Q302 is failure.
5. Troubleshooting (continued)
ACER X193HQ
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5.4 Abnormal screen for VGA
Check the R, G, B video signal from computer
input on P302 of video connector.
NG
OK
Failure Point
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
OK
Check all LVDS signals being output to P305
from I305?
NG
OK
Prpcess "Checking the resolution change IC
movement" section.
Failure Point
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.
Failure Point
Printed wire broke between I305 and P305.
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24
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5. Troubleshooting (continued)
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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
OK
In the case of the DVI_RX0+/- signal. (A
DVI_RX1+/-, DVI_RX2+/- and DVI_RXC+/signal is the same path, too.)
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?
NG
OK
Prpcess "Checking the resolution change IC
movement" section.
Failure Point
Printed wire broke between I305 and P305.
5. Troubleshooting (continued)
ACER X193HQ
Go to cover page
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)
NG
Failure Point
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
OK
Failure Point
I305 is failure.
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.
4) R374, R375 is short or open.
5) D327,D328 is short
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26
ACER X193HQ
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5.7 Abnormal plug and play operation for VGA
Confirm the host computer supplies DDC2B mode.
NG
OK
Failure Point
The host machine is not communicatiog in DDC2B mode.
Check the voltage on P302 pin9 that is power DC 5 V.
NG
OK
Failure Point
TheVideo cable is failure.
Check the voltage on Q307 pin1 that is power DC
3.3V.
NG
OK
Failure Point
1) Printed wire broke between Q307 pin3,D325 and
P302 pin9
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.
NG
Failure Point
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
5. Troubleshooting (continued)
ACER X193HQ
Go to cover page
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
OK
Failure Point
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
NG
OK
1) Printed wire broke between VR307 pin3,D325 and
P303 pin14
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
OK
Failure Point
The Video cable is failure.
Check the output signal of serial data / clock on I305
pin 2.3
NG
Failure Point
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
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ACER X193HQ
5. Troubleshooting (continued)
Go to cover page
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.
NG
OK
Failure Point
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.
NG
OK
Failure Point
Process "Checking the resolution change IC movement"
section.
Failure Point
1) Printed wire broke between P302 pin14 and
I308 pin8.
2) FB305 or R308 is open.
3) D310,R318 or C313 is short.
ACER X193HQ
5. Troubleshooting (continued)
Go to cover page
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
OK
1) Printed wire broke between X300 and I305 pin 15, 16.
2) C340, C341 is short or open.
3) X300 failure.
Check I305 pin 4 RST signal is low level at normal operation.
NG
Failure Point
1) Printer wire broke between I305 pin 4 and
C345
2) C345 is short.
3) I305 is failure.
OK
Check I305 pin 38,39,40 IIC signal.
Failure Point
NG
OK
Failure Point
I305 failure.
1) Printed wire broke between I305 pin 38, 39, 40 and I303 pin 5, 6,7.
2) R351,R352,R353 is open.
3) R395,R396,R397 is open or short.
4) I303 is failure.
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30
ACER X193HQ
5. Troubleshooting (continued)
Go to cover page
5.11 Checking the DC/DC converter circuit
Check the 5V is output from P301 pin 5,6
NG
OK
Failure Point
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.
NG
OK
Failure Point
I301 is failure or C303,C304 short.
Check the 3.3V is input to I309 pin3.
NG
OK
Failure Point
1) Printed wire broke between I302 pin2. 4 and
I309 pin3.
Check the 1.8V is output from I309 pin2,4.
NG
OK
Failure Point
1) Printed wire broke between I301 pin2,4,I309 pin3,2,4
and I308
2) FB309,FB310 is open.
Failure Point
I309 failure or C368 short.
6. Firmware Upgrade Process
ACER X193HQ
Go to cover page
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.
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32
ACER X193HQ
6. Firmware Upgrade Process (continued)
Go to cover page
Step-5 Select “64K” icon to load firmware image. There are two
The screen will show “PASS”
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
ACER X193HQ
7. Writing EDID Process
33
Go to cover page
1 Writing EDID Procedure
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)
3.)Extend the DVI cable on DVI EXTENDING SOCKET of DDC
FIXTURE. (Refer to figure 3)
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.
D-SUB PLUG
2. Writing VGA/DVI Process
Chose the folder:”Acer-X193H-X203H-digital signal” or “AcerX193H-X203H” it depends on which model you want to write.
Acer-X193H-X203H be used in the monitor only has VGA
port.
Acer-X193H-X203H-digital signal be used in the monitor both
have VGA and DVI port
Select the “Acer-M1&M3-XPEDID-DVI-.exe” to execute it
DVI EXTENDING
SOCKET
USB A
SOCKET
PRINTER PLUG
DVI EXTENDING
SOCKET
USB A
PLUG
1
4
2
5
3
3.Select Model: Key in password”cedid” then select model
which one you want to write EDID code that it depends on
panel type.
6
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
34
ACER X193HQ
7. Writing EDID Process (continued)
Go to cover page
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
8. BLOCK DIAGRAM
A
B
C
D
E
F
G
1
2
3
3
4
Audio
AMP
(Option)
4
5
6
DC 5V
7
Inverter control
Speaker
line input
5
Audio line input
8
9
10
LCD Flat Panel
11
12
13
Panel date& control.DC power
Interface Board
10
Flat Panel Controller,
DDC
9
Host Computer
8
11
12
13
Function Key Board
Function key input
7
Video Signal input& DDC
6
Audio Source
1W*2
Speaker
(Option)
CCFT Drive
Interface Board
AC-IN
2
AC to DC Adapter
DC to AC Inverter
1
PCB No.
A
B
C
D
E
F
G
ACER X203H
Go to cover page
35