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Acer V243W
Service Guide
1
Service Guide Version and Revision
Version Release Date Revision History TPV model
A00 Mar.-23-2008 Initial Release TK7SMHD8W7AEBN
2
Copyright
Copyright © 2003 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced,
Transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in
any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without
the prior written permission of Acer Incorporated.
Disclaimer
The information in this guide is subject to change without notice. Acer Incorporated makes no representations or
warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties
of merchantability or fitness for any particular purpose. Any Acer Incorporated software described in this manual is
sold or licensed "as is". Should the programs prove defective following their purchase, the buyer (and not Acer
Incorporated, its distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any
incidental or consequential damages resulting from any defect in the software.
Intel is a registered trademark of Intel Corporation.
Pentium and Pentium II/III are trademarks of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.
Trademarks
Acer is a registered trademark of Acer Incorporated.
All other trademarks are property of their respective owners.
Conventions
The following conventions are used in this manual:
Screen messages Denotes actual messages that appear on screen.
Note Gives bits and pieces of additional information related to the current topic.
Warning Alerts you to any damage that might result from doing or not doing specific actions.
Caution Gives precautionary measures to avoid possible hardware or software problems.
Important Remind you to do specific actions relevant to the accomplishment of procedures.
3
Preface
Before using this information and the product it supports, please read the following general information.
1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided
for Acer's "global" product offering. To better fit local market requirements and enhance product competitiveness,
your regional office may have decided to extend the functionality of a machine (e.g. add-on card, modem, or extra
memory capability). These LOCALIZED FEATURES will NOT be covered in this generic service guide. In such
cases, please contact your regional offices or the responsible personnel/channel to provide you with further
technical details.
2. Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on
your regional web or channel. If, for whatever reason, a part number change is made, it will not be noted in the
printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a
DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list
provided by your regional Acer office to order FRU parts for repair and service of customer machines.
Warning: (For FCC Certified Models)
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experienced radio/TV technician for help.
Notice:
1. The changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission limits.
3. The manufacturer is not responsible for any radio or TV interference caused by unauthorized modification to this
equipment. It is the responsibility of the user to correct such interference.
As ENERGY STAR® Partner our company has determined that this product meets the ENERGY STAR®
guidelines for energy efficiency.
Warning:
To prevent fire or shock hazard, do not expose the monitor to rain or moisture. Dangerous high voltages are present
inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.
4
Precautions
Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in
a wet basement.
Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and
cause serious damage to the appliance. Use only a trolley or stand recommended by the manufacturer or sold
with the monitor. If you mount the monitor on a wall or shelf, uses a mounting kit approved by the manufacturer
and follow the kit instructions.
Slots and openings in the back and bottom of the cabinet are provided for ventilation. To ensure reliable
operation of the monitor and to protect it from overheating, be sure these openings are not blocked or covered.
Do not place the monitor on a bed, sofa, rug, or similar surface. Do not place the monitor near or over a radiator
or heat register. Do not place the monitor in a bookcase or cabinet unless proper ventilation is provided.
The monitor should be operated only from the type of power source indicated on the label. If you are not sure of
the type of power supplied to your home, consult your dealer or local power company.
The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This plug will fit
only into a grounded power outlet as a safety feature. If your outlet does not accommodate the three-wire plug,
have an electrician install the correct outlet, or use an adapter to ground the appliance safely. Do not defeat the
safety purpose of the grounded plug.
Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will protect the
monitor from damage due to power surges.
Do not overload power strips and extension cords. Overloading can result in fire or electric shock.
Never push any object into the slot on the monitor cabinet. It could short circuit parts causing a fire or electric
shock. Never spill liquids on the monitor.
Do not attempt to service the monitor yourself; opening or removing covers can expose you to dangerous
voltages and other hazards. Please refer all servicing to qualified service personnel
To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate
configured receptacles marked between 100 - 240V AC, Min. 5A.
The wall socket shall be installed near the equipment and shall be easily accessible.
Special Notes On LCD Monitors
The following symptoms are normal with LCD monitor and do not indicate a problem.
Notes
Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and
then turn it on again to make sure the flicker disappears.
You may find slightly uneven brightness on the screen depending on the desktop pattern you use.
The LCD screen has effective pixels of 99.99% or more. It may include blemishes of 0.01% or less such as a
missing pixel or a pixel lit all of the time.
Due to the nature of the LCD screen, an afterimage of the previous screen may remain after switching the image,
when the same image is displayed for hours. In this case, the screen is recovered slowly by changing the image
or turning off the Power Switch for hours.
5
Table Of Contents
Chapter 1 Monitor Features ................................................ 7
Introduction ............................................. 7
Electrical Requirements ............................................. 8
LCD Monitor General Specification ............................................. 9
LCD Panel Specification ............................................. 10
Support Timing ............................................. 13
Monitor Block Diagram ............................................. 14
Main Board Diagram ............................................. 15
Software Flow chart ............................................. 16
Main Board Layout ............................................. 18
Installation ............................................. 19
Attaching/Removing the base ............................................. 20
Chapter 2 Operating Instructions ............................................. 21
External Controls ............................................. 21
Front Panel Controls ............................................. 21
eColor Management (OSD) ............................................. 22
How to Adjust a Setting ............................................. 23
LOGO ............................................. 27
Chapter 3 Machine Disassembly ............................................. 28
Chapter 4 Troubleshooting ............................................. 31
Chapter 5 Connector Information ............................................. 37
Chapter 6 FRU (Field Replacement Unit) List ............................................. 39
Exploded Diagram ............................................. 39
Chapter 7 Schematic Diagram ............................................. 43
6
Monitor Features Chapter 1
Introduction
Scope
This specification defines the requirements for the 24" MICROPROCESSOR based Multi-mode supported high
resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector and
24-pin DVI connector, also supports VESA DPMS power management and plug & play function.
Description
The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no
radiation. This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop
space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF
target is 50k hours or more.
Chart of V243W
Panel LTM240CT01 801(A01)
Signal Interface D-Sub 15-pin/ DVI 24-pin
Sync Type Separate / Compatible
Color Temp User Adjust Support
DDC DDC2B
Speaker No
Headphone Jack No
Microphone Jack No
USB Hub Not support
Tilt / Swivel Yes / No
7
Electrical Requirements
Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
Ambient light Dark room (< 1 cd/m2)
Viewing distance 35-50cm
Warm up time 30 minutes
Analog Input signal 700 mVss
Control temperature 6500° K
Brightness control Set to Factory preset value (cut off raster)
Set to The value under user mode, which allows that the brightest
User contrast control two of 32 linear distributed gray-scales (0 700mv) can be
distinguished.
Picture position and size Factory preset value
Viewing angle 90°+/-20 ° H and 90°+/-10° V
AC Supply voltage 230V± 5, 50±3Hz
Ambient temperature 20+5
Humidity 65% ± 20%
Display mode 1920x1200, 60 Hz, all white
e-color mode Set to "User" mode
Measurement systems
The units of measure stated in this document are listed below:
1 gamma = 1 nano tesla
1 tesla = 10,000 gauss
cm = in x 2.54
Lb = kg x 2.2
Degrees F = [°C x 1.8] + 32
Degrees C = [°F - 32]/1.8
u' = 4x/(-2x + 12y + 3)
v' = 9y/(-2x + 12y + 3)
x = (27u'/4)/[(9u'/2) - 12v' + 9]
y = (3v')/[(9u'/2) - 12v' + 9]
nits = cd/(m2) = Ft-L x 3.426
lux = foot-candle x 10.76
8
LCD Monitor General Specification
Driving system TFT Color LCD
Active Display Area 518.4(H) x 324.0(V)
Pixel pitch 0.270(H) x 0.270(W)
LCD Panel
Contrast Ratio 1000 : 1
Response time 5ms
Luminance of White 400(Typ.) cd/
Separate Sync. H/V TTL
Input H-Frequency 30kHz 80kHz
V-Frequency 56-76Hz
Viewing angle (H)160 (V) 160(Type)
Display Colors 16.7M
Display mode 1920 x 1200 @60Hz
ON Mode < 65W
EPA ENERGY STAR®
OFF Mode < 1W
Set to factory preset value, which allows that the brightest two of 32 linear distributed
Contrast control
gray-scales (0 700mv) can be distinguished.
Power Source 90 V ~ 240 V50 ± 3Hz, 60 ± 3Hz
Operating Temp: 0° to 40°C
Environmental Storage Temp: -30° to 65°C
Considerations Operating Humidity: 0% to 90%
Storage Humidity: 0% to 90%
Peak surge current < 100 A peak at 230 VAC and cold starting&25 & DC Output at Full-load
No advance effects (no loss of information or defect) with a maximum of 1 half-wave
Power line surge
missing per second
9
LCD Panel Specification
LTM240CT01 is a color active matrix liquid crystal display (LCD) that uses amorphous silicon TFT (Thin Film
Transistor) as switching components. This model is composed of a TFT LCD panel, a driver circuit and a back light
unit. The resolution of a 24.0" is 1920 x 1200 and this model can display up to 16.7 millions colors.
General Specifications
Mechanical Information
10
Electrical Characteristics
11
Optical Specifications
12
Support Timing
VESA MODES
Horizontal Vertical
Nominal
Nominal Nominal
Sync Sync Pixel
Mode Resolution Total Frequency Freq.
Polarity Polarity Clock
+/- 0.5KHz +/- 1 Hz
(MHz)
640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175
VGA 640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500
640x480@75Hz 840 x 500 37.500 N 75.00 N 31.500
800x600@56Hz 1024 x 625 35.156 N/P 56.250 N/P 36.000
800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000
SVGA
800x600@72Hz 1040 x 666 48.077 P 72.188 P 50.000
800x600@75Hz 1056x625 46.875 P 75.000 P 49.500
1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000
1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000
XGA
1024x768@72Hz 1304x798 57.7 P 72 P 78.4
1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750
1152x864@75Hz 1600X900 67.5 P 75 P 108.000
1280x1024@60Hz 1688x1066 63.981 P 60.020 P 108.000
1280x1024@70Hz 1688x1066 74.4 P 70 P 124.9
SXGA 1280x1024@72Hz 1688x1066 77.9 P 72 P 134.6
1280x1024@75Hz 1688x1066 79.976 P 75.025 P 135.000
1280x960@60Hz 1800x1000 60 P 60 P 108
1440x900@60Hz 1904x934 55.93 P 60 P 106.5
WSXGA 1680x1050@60Hz 2240x1089 65.29 N 59.95 P 146.25
WUXGA 1920*1200@60HZ 2080*1235 74.038 P 59.95 N 154.00
UXGA 1600x1200@60Hz 2160x1250 75 P 60 P 162
13
Monitor Block Diagram
The LCD MONITOR will contain a main board, an inverter board, an adapter board and key board which house the
flat panel control logic, brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Flat Panel and
CCFL Drive
Inverter Board CCFL Backlight
RS232 Connector
For white balance
Adapter Board Main Board adjustment in factory
mode
AC input
Key Board
Video Signal, DDC
HOST Computer
14
Main Board Diagram
Crystal LCD Interface
24MHZ/30PF/49US
(CN703)
(X402)
MCU Scalar IC MST9200HA-LF-165
Crystal 14.318MHz
MTV416GMV (Include ADC, OSD)
(X401)
(U407) (U403)
EPR_SDA
EPR_SCL Digital H sync
Video V sync
EEPROM Key Board Signal RGB
M24C16 Control
(U408) (CN405)
DVI D-Sub FRAME
Connector Connector MEMORY
(CN401) (CN402) (U404)
DB15_SDA,
DB15_SCL
EEPROM EEPROM
M24C02 M24C02
(U401) (U402)
15
Software Flow Chart
1
Y
2 3
N
N
4
N
5
Y
6
N
7 8
Y Y
9
N
10 11
Y
N N
12 13
Y Y
N
14 15 16
Y
17
N
18 19
Y
16
Remark:
1) MCU initializes.
2) Is the EEPROM blank?
3) Program the EEPROM by default values.
4) Get the PWM value of brightness from EEPROM.
5) Is the power key pressed?
6) Clear all global flags.
7) Are the AUTO and SELECT keys pressed?
8) Enter factory mode.
9) Save the power key status into EEPROM.
Turn on the LED and set it to green color.
Scalar initializes.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are there any signals coming?
13) Does the scalar send out an interrupt request?
14) Wake up the scalar.
15) Are there any signals coming from analog port?
16) Display "No connection Check Signal Cable" message. And go into standby mode after the
message disappears.
17) Program the scalar to be able to show the coming mode.
18) Process the OSD display.
19) Read the keyboard. Is the power key pressed?
17
Main Board Layout
Symbol Description Symbol Description
CN402 D-SUB 15PIN U403 IC MST9200HA-LF-165 PQFP-208
CN401 DVI 24PIN CONN F U701 IC AIC1084-33PMTR-R AIC
CN703 WAFER 30P 2.0MM DIP DUAL ROW U702 IC AIC1084-33PMTR-R AIC
CN701 WAFER 14P RIGHT ANGLE PITCH U404 IC EM636165TS-5G 16M TSOPII-50 ETRON
CN405 WAFER 6P RIGHT ANGLE PITCH 2.0 U405 IC EM636165TS-5G 16M TSOPII-50 ETRON
U407 MTV416GMV U401 M24C02-WMN6TP
U402 M24C02-WMN6TP U408 M24C16-WMN6TP
X402 24MHZ/30PF/49US X401 XAT01431AFI1H-3OHX AT-49 14.31818MHZ
18
Installation
To install the monitor on your host system, please follow the steps below:
Steps
1 Connect the video cable
AMake sure both the monitor and computer are switched off.
BConnect the VGA video cable to the computer.
2 Connect the power cord
Connect the power cord to the monitor, then to a properly grounded AC outlet.
3 Turn on the monitor and computer
Turn on the monitor first, then the computer. This sequence is very important.
4 If the monitor does not function properly, please refer to the troubleshooting section to diagnose the problem.
19
Attaching/Removing the Base
Attaching:
Align the release button on the bottom of the monitor with the corresponding slots on the bottom of the base.
Removing:
Press the release button as indicated, then pull in the direction of the arrow to remove the base.
20
Operating Instructions Chapter 2
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
monitor. By changing these settings, the picture can be adjusted to your personal preferences.
· The power cord should be connected.
· Connect the video cable from the monitor to the video card.
· Press the power button to turn on the monitor position. The power indicator will light up.
External Controls
Front panel controls
1 Power LED: Lights up to indicate the power is turned on.
2 Power Switch: Turn the power on or off.
3.4 < / > : Press < or > to navigate to the desired function, press Enter to select the function. Press < or > to change
the settings of the current function.
5 Menu/Enter: Activate the OSD menu when the OSD is off or activate deactivate the adjustment function when the
OSD is on.
6 Auto adjust button/Exit:
a. When the OSD menu is active, this button will act as the exit key exit OSD menu).
b. When the OSD menu is inactive, press this button for two seconds to activate the Auto Adjustment function. The
Auto Adjustment function s used to set the HPos, VPos, Clock and Focus.
7 Empowering Key/Exit:
a. When the OSD menu is active, this button will act as the exit key exit OSD menu).
b. When the OSD menu is inactive, press this button to select scenario mode.
21
eColor Management (OSD)
22
How to Adjust a Setting
23
Adjusting the picture
24
25
OSD Message
a. Outline
b. The Description For OSD Message
Item Description
Auto Config When Analog signal input, if User Press Hot-Key "Auto", will show this message, and the
Please Wait monitor do the auto config function.
Input Not When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor
Supported support range, will show this message. This message will be flying.
Cable Not Analog-Only Model: When the video cable is not connected, will show this message.
Connected This message will be flying.
Analog-Only Model: When the video cable is connected, but there is no active signal
No Signal
input, will show this message, then enter power saving.
26
Logo
When the monitor is power on, the LOGO will be showed in the center, and disappear slowly.
How To Optimize The DOS-Mode
Plug And Play
Plug & Play DDC2B Feature
This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the
monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional
information about its display capabilities.
The DDC2B is a bi-directional data channel based on the I²C protocol. The host can request EDID information over
the DDC2B channel.
This monitor will appear to be non-functional if there is no video input signal. In order for this monitor to
operate properly, there must be a video input signal.
This monitor meets the Green monitor standards as set by the Video Electronics Standards Association (VESA)
and/or the United States Environmental Protection Agency (EPA) and The Swedish Confederation Employees
(NUTEK). This feature is designed to conserve electrical energy by reducing power consumption when there is no
video-input signal present. When there is no video input signals this monitor, following a time-out period, will
automatically switch to an OFF mode. This reduces the monitor's internal power supply consumption. After the video
input signal is restored, full power is restored and the display is automatically redrawn. The appearance is similar to
a "Screen Saver" feature except the display is completely off. Pressing a key on the keyboard, or clicking the mouse
restores the display.
Using The Right Power Cord
The accessory power cord for the Northern American region is the wallet plug with NEMA 5-15 style and is UL listed
and CSA labeled. The voltage rating for the power cord shall be 125 volts AC.
Supplied with units intended for connection to power outlet of personal computer: Please use a cord set consisting of
a minimum No. 18 AWG, type SJT or SVT three conductors flexible cord. One end terminates with a grounding type
attachment plug, rated 10A, 250V, and CEE-22 male configuration. The other end terminates with a molded-on type
connector body, rated 10A, 250V, having standard CEE-22 female configuration.
Please note that power supply cord needs to use VDE 0602, 0625, 0821 approval power cord in European counties.
27
Machine Disassembly Chapter 3
This chapter contains step-by-step procedures on how to disassemble the monitor for
maintenance.
Disassembly Procedure
1. Remove the cover hinge as the following indicator. (Fig 1)
Fig 1
2. Remove the screws as following indicate to release base stand. (Fig 2)
Fig 2
28
3. Remove the back cover and bezel. (Fig 3)
Fig 3
4. Release the shield inverter and lamp connectors. (Fig 4-5)
Fig 4
Fig 5
29
5. Remove the screws to remove the panel. Pay attention to the LVDS cable.(Fig 6-7)
Fig 6
Fig 7
6. Remove the screws to remove the main board, adapter board and inverter board.( Fig 8)
Fig 8
30
Troubleshooting Chapter 4
This chapter provides troubleshooting information for the V243W:
1. No Power
No power
Press power key and look if the
picture is normal
NG
Please reinsert and make sure the
AC of 100-240 is normal
NG Reinsert or check the
OK
power section
Measure U701, U702 Pin2=3.3V,
U703 Pin1=1.8V
NG
OK Measure CN701 Pin1=12V?Pin55V?
Check if X401,X402 oscillate
waveforms are normal NG
Replace Power section
NG OK
OK Replace X401,X402
Replace U701,U702,U703
Replace U403
31
2. No Picture (LED is orange)
No picture
The button if NG
X401 oscillate NG
Replace X401
under control waveform is normal
OK
OK
Check reset circuit of NG
Check Correspondent
U407 is normal component
Measure U701, U702 Pin2=3.3V,
U703 Pin1=1.8V OK
NG Replace U407
Replace
OK U701,U702,
U703
Check HS/VS from
CN402 is normal
NG Check Correspondent
component
OK
Replace U403
32
3. White screen
White screen
NG
Measure Q707 base X402 oscillate
is low level? waveform is normal
OK
NG Replace X402
OK
Check Q705,Q706,Q707 is
broken or CN703 solder? Check U403/U407
NG Check Correspondent NG
component.
OK
Replace U403/U407
Replace PANEL
33
4. Key Board
OSD is unstable or not working
NG
Is Key Pad Board connecting normally? Connect Key Board
Y
NG
Is Button Switch normally? Replace Button Switch
Y
NG
Is Key Pad Board normally? Replace Key Board
Y
Check Main Board
34
5. Adapter/Inverter Board
No power
No power
Check CN902 Pin3~7 = 24 V
OK
NG Check Interface board
Check AC line volt 120V or 220V
NG
OK Check F901,NR901,power cable
Check the voltage of C914 (+)
OK NG
Check bridge retified circuit
Check start voltage for the Pin6 of IC903
NG
Change IC903,IC951,ZD901,Q903,Q904,PS_ON
OK
Repearing the start voltage
Check T901,T902,IC901,IC902,Q901,Q902
NG ReplaceT901,T902,IC901,IC902,Q901,Q902
OK Check OLP circuit
Check D953, IC955,IC954,C964,C965,C966,IC950,IC953,ZD950,Q950
35
W/LED No Backlight
Check the 24V voltage input
NG
OK Check the adapter
Check ON/OFF signal
NG
OK Check Interface board
Check the voltage of IC801 pin2
NG
Change Q805.Q806 or Q807
OK
Check the pin1&15 of IC801 have PWM wave
NG
OK Replace IC801
Check Q802,Q804,Q808,Q809
Drain wave
NG
OK Replace Q802,Q804,Q808,Q809
Check the output of PT801~PT812
NG Change PT801~PT812
OK
Check connecter & lamp
36
Connector Information
Chapter 5
The following figure shows the connector locations on the monitor:
D-SUB connector
37
DVI Connector
38
FRU (Field Replaceable Unit) List Chapter 6
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of V243W.Refer to this
chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).
NOTE: Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on your regional web or channel (http://aicsl.acer.com.tw/spl/). For whatever reasons a part number
change is made, it will not be noted in the printed Service Guide. For ACER AUTHORIZED SERVICE
PROVIDERS, your Acer office may have a DIFFERENT part number code from those given in the FRU list of
this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order
FRU parts for repair and service of customer machines.
NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on
how to dispose it properly, or follow the rules set by your regional Acer office on how to return it.
Exploded Diagram (Model: V243W)
39
Part List
Above picture show the description of the following component.
Item Picture Description
1 BaseHinge
2 Main Frame
3 Panel
40
Adapter Board
4
5 Inverter Board
41
6 Main Board
7 LVDS Cable
42
Schematic Diagram Chapter 7
Main Board
POWER INPUT
+12V +3.3V
CN701
+3.3V 4
+12V 6
1 +12V
2
3
+12V
+12V REV:C FOR SCALER POWER
4 GND +
5 +5V NC C701 NC C702 FB701
6 +5V 1000uF/16V 0.1uF +5V U701 120 OHM VCPU
7 +5V +5V
8 GND 3 2 1 2
VIN VOUT VCPU 6
9 GND
+5V 3,6
10 GND 1
11 ON_OFF REV:C REV:C ADJ REV:C
12 Dimming + + C706 AIC1084-33PM C707 C704 +3.3AVDD
+5V SOT-263
13
14
PS_ON
GND
C705
1000uF/16V PS_ON/OFF BKLT-PWM C703
1000uF/16V
0.1uF 0.1uF
22uF 16V
REV:C POWER ON LOW LOW +3.3AVDD 4
CONN
R701
POWER SAVING HI HI
10K 1/10W 5%
POWER OFF HI HI
Q701
REV:C
2N3904S-RTK/PS
PS_ON/OFF 6
C727
0.1uF R702
4K7 1/10W 5%
+5V
R703 REV:C
10K 1/10W 5% R704 +5V
1K 1/10W 5% +3.3V_SD
SOT-252
U702
R705 3 2
Vin Vo2 +3.3V_SD 4,5
C709 4K7 1/10W 5%
BKLT-EN 6
0.1uF Q702
ADJ
2N3904S-RTK/PS REV:C
+5V C710 C712
C708 AIC1084-33PE 22uF 16V 0.1uF
0.1uF
1
R706
1K 1/10W 5%
REV:C
R707
1K 1/10W 5%
Q703
REV:C 2N3904S-RTK/PS
NC C713
BKLT-PWM 4
22uF 16V R708
4K7 1/10W 5%
+VLCD +5V +1.8V
Q704 L701
AO3401 22uH
+VLCD 7
+1.8V 4
+5V
REV:C
D701 R709 + C714 C715
5
6
7
8
PANEL_EN REV:C
R710
Q705
+5V
SSM54PT22R 1/10W 5%
470UF 16V
0.001uF
D1
D1
D1
D1
POWER ON LOW R711
10K 1/10W 5%
100K 1/10W 5%
POWER OFF HI REV:C U703 C716
G1
S1
S1
S1
R712 8 4 0.001uF
100K 1/10W 5% VIN FB
R714 AO4403 7 3
4
3
2
1
NC C718 R713 PGATE N.C
Q706 0.068uF 33K 1/10W 5% C719 6 2 C720
2N3904S-RTK/PS 0.001uF PWGND AGND 0.001uF
Q707 5 1 R716
6 PANEL_EN ADJ ISENSE
2N3904S-RTK/PS Q708 NC C721 15K 1/10W 5%
R717 2N3906S-RTK/PS /NC 0.22uF /NC
4K7 1/10W 5% C723 LM3485
NC
R719
31.6K 1% 1/10W
+12V
+
C724
FOR USB POWER NC
5
4