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Acer AT2002
Service Guide
1
Service Guide Version and Revision
No. Version Release Date Revision
1 A00 Jul-15 -2006 Original release
2
Copyright
Copyright 2006 Acer Technology Corp.
All rights reserved.
This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any
electronic machine readable form without prior written permission of Acer Technology Corp.
ACER AT2002 Service Manual.
Printed in Fujian.
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.
Acer is a registered trademark of Acer Corporation.
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
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.
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.
3
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 TV Monitors
The following symptoms are normal with LCD TV 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 TV 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 TV 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
Monitor Features ............................................. 7
General Specifications ............................................. 7
LCD TV Description ............................................. 8
Precautions And Notices ............................................. 9
D-SUB PIN Distribution ............................................. 10
Chapter 1
Factory Preset Display Modes ............................................. 11
LCD TV Panel Specification ............................................. 12
Panel Features ............................................. 12
General Specifications ............................................. 12
Mechanical Specifications ............................................. 12
Optical Specifications ............................................. 13
Connecting Peripherals ............................................. 14
Chapter 2
Front Panel Controls ............................................. 14
Remote Control & OSD Operating
............................................. 16
Instructions
Chapter 3
Using The Remote Control ............................................. 16
Using The OSD Menus 17
LOGO ............................................. 22
Chapter 4 Machine Disassembly ............................................. 23
Chapter 5 Trouble Shooting ............................................. 29
Chapter 6 White-Balance, Luminance Adjustment ............................................. 34
FRU (Field Replaceable Unit) List ............................................. 37
Chapter 7
Exploded Diagram ............................................. 38
EDID Data ............................................. 38
Chapter 8 PCB Layout ............................................. 40
Chapter 9 Schematic Diagram ............................................. 70
6
Monitor Features Chapter 1
General Specifications
Model AT2002
Panel spec
Resolution (pixels) 800 x 600
Brightness (tpe.) 450 cd/m2
Contrast Ratio (tpe.) 600:1
Display colour 16.7 M
Viewing angle (tpe.) H: 160o ; V:120o
Response (tpe.) 16 ms (gray to gray)
Power supply
Input 100 V ~ 240 V - AC. (50/60 Hz)
Max. power consumption < 65 W
Power saving 5W
Mechanical
Dimensions (W x H x D mm) 514 x 474 x 78
Weight (Kg) 7.4
Weight (lbs) 16.3
Gross weight (Kg) 9.4
Gross weight (lbs) 20.7
Wall Mounting 100mm x 100mm
Analog TV system
TV Colour system PAL, SECAM
Sound system B/G/D/K/I/L
Stereo system NICAM / A2
TV Tuner System PLL, 45.25 Mhz - 862.25 Mhz
Subtitles Teletext 1.5
Analog TV-tuner quantity 1
Terminal
Analog Tuner In Yes
SCART CVBS (In/Out), RGB (In), Audio R/L
AV CVBS, Audio R/L
S-Video S-Video, audio R/L share with AV
PC D-sub in Yes
PC audio-in Yes
Audio system
Speaker 5W+5W
7
LCD TV Description
The LCD TV will contain a main board (include audio), an I/O board, a switching power board, a function
keyboard (include an IR Board) and an Ear phone board. The main board and power board will house the flat
panel to control logic I2C bus, DDC, brightness control logic for LCD panel, DC-DC conversion to supply the
appropriate power to the whole board and transmitting TTL level signals into LCD Module to drive the LCD
display circuit.
The inverter board will drive the five CCFLs (Cold Cathode Fluorescent Lamp).
The switching power board will provides the power ON/OFF to control the TV and control LED indicator for
DPMS.
The function keyboard and Remote Control will provide the OSD control signal to the Main Board.
8
Precautions And Notices
1-1 Assembly Precaution
(1) Please do not press or scratch LCD panel surface with anything hard. And do not soil LCD panel
surface by touching with bare hands (Polarize film, surface of LCD panel is easy to be flawed)
In the LCD panel, the gap between two glass plates is kept perfectly even to maintain display
characteristic and reliability. If this panel is subject to hard pressing, the following occurs :
(a) Uniform color (b) Orientation of liquid crystal becomes disorder
(2) Please wipe out LCD panel surface with absorbent cotton or soft cloth in case of it being soiled.
(3) Please wipe out drops of adhesive like saliva and water in LCD panel surface immediately.
They might damage to cause panel surface variation and color change.
(4) Do not apply any strong mechanical shock to the LCD panel.
1-2 Operating Precaution
(1) Please be sure to unplug the power cord before remove the back-cover. (be sure the power is
turn-off)
(2) Please do not change variable resistance settings in MAIN-BOARD; they are adjusted to the most
suitable value. If they are changed, it might happen LUMINANCE does not satisfy the white
balance spec.
(3) Please consider that LCD backlight takes longer time to become stable of radiation characteristic in
low temperature than in room temperature.
(4) Please pay attention to displaying the same pattern for very long-time. Image might stick on LCD.
1-3 Storage Precaution
(1) When you store LCD for a long time, it is recommended to keep the temperature between -20°C -
60°C without the exposure of sunlight and to keep the humidity less than 85% RH.
(2) Please do not leave the LCD in the environment of high humidity and high temperature such as
60°C, 95%RH.
(3) Please do not operate the LCD in the environment of abnormal temperature, below 0°C.
1- 4 High Voltage Warning
The high voltage was only generated by Power support part, if carelessly contacted the transformer
on this module, can cause a serious shock.
9
D-SUB PIN Distribution
This procedure gives you instructions for installing and using the LCD TV display.
(1) Position the display on the desired operation and plug the power cord into a convenient AC outlet.
Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis
and cabinet to the electrical conduct ground. If the AC outlet in your location does not have provisions for
the grounded type plug, the installer should attach the proper adapter to ensure a safe ground potential.
(2) Connect the 15-pin color display shielded signal cable to your signal system device and lock both screws
on the connector to ensure firm grounding. The connector information is as follow:
1 5
6
10
11 15
15 - Pin Color Display Signal Cable
Pin NO. Description Pin NO. Description
1 Red Video 9 +5V(PC97)
2 Green Video 10 VGA-CONN(Sync GND)
3 Blue Video 11 Ground
4 Ground 12 SDA(DDC Data)
5 Ground 13 H-Sync.
6 Red Ground 14 V-Sync.
7 Green Ground 15 Serial Clock for DDC
8 Blue Ground
10
Factory Preset Display Modes:
Analog RGB Signal Timing
Vertical Horizontal Sync Polarity Presence Screen Mode
Dots × Lines Frequency Frequency FULL
Horizontal Vertical Horizontal Vertical
(Hz) (KHz) (16:9)
720 ×400 70.1 31.5 NEG POS YES YES YES
59.9 31.5 NEG NEG YES YES YES
640 ×480 72.8 37.9 NEG NEG YES YES YES
75.0 37.5 NEG NEG YES YES YES
60.3 37.9 POS POS YES YES YES
800 ×600 72.2 48.1 POS POS YES YES YES
75.0 46.9 POS POS YES YES YES
11
LCD TV Panel Specification
Panel Features
-High brightness (450 nits)
- High contrast ratio (700:1)
- Fast response time (16ms)
- High color saturation NTSC 72%
- WXGA (800 x 600 pixels) resolution
- DE (Data Enable) only mode
- LVDS (Low Voltage Differential Signaling) interface
- Optimized response time for 50/60 Hz frame rate
- Ultra wide viewing angle: 160(H)/140(V) (CR>20) Super MVA technology
- 180 degree rotation display option
General Specifications
NO. Item Specification Remark
1 Display resolution(pixel) 800x3(H)×600(V)
2 Display Mode TN Type, Normally White + SWV Film
3 Active area (mm) 408(H)×306(V)
4 Screen size (inch) 20.1(Diagonal)
5 Pixel pitch (mm) 0.51(H)×0.51(V)
6 Color configuration R. G. B. Vertical stripe
7 Display Color 16.2M (6 bit + FRC)
8 Typical white Luminance 450 nit (typ.)
9 Contrast ratio 700:1
10 Color Gamut 72% typ. of NTSC coverage
11 Response Time 16ms typ. (Tr+Tf)
12 Electrical Interface TTL 1 port
13 Overall dimension (mm) 448(W)×347(H)×23(D)(max.)
14 Weight (g) 3500
15 Surface Treatment Anti-Glare type
16 RoHS RoHS compliance
12
Optical Specifications
Test Conditions
Item Symbol Min. Typ. Max. Unit Remark
Input voltage V CC 4.75 5.0 5.25 V
Power
supply Current
voltage consumption IA - 0.8 1.0 Arms
Inrush current I RUSH - - 3.0 Apeak
Power ripple VRP - - 100 mVp-p
voltage
Internal Low voltage VIL 0 - 1.0 V
logic
High voltage VIH 2.3 - 3.3 V
Optical Specifications
Specification
Item Symbol Condition Unit Remark
Min. Typ. Max.
Response time
Rising time Tr =0° - 11 15 ms
Falling time Tf - 5 10
Contrast ratio(center of screen) CR =0° 600 700 -
Viewing angle
Top 65 80 -
Bottom CR10 55 60 - Deg.
Left 65 80 -
Right 65 80 -
Brightness (center of screen) YL =0° 350 450 - nit
Wx 0.249 0.279 0.309
Color chromaticity (CIE) =0°
Wy 0.260 0.290 0.320
Rx 0.607 0.637 0.667
Ry 0.311 0.341 0.371
Gx 0.268 0.298 0.328
Gy 0.568 0.598 0.628
Bx 0.113 0.143 0.173
By 0.028 0.058 0.088
Color Saturation (NTSC) 72 %
White uniformity W 70 - - %
13
Connecting Peripherals Chapter 2
Front panel controls
Your LCD TV overview
Front panel view
1 Volume +/-
2 Input key
3 Menu key
4 Channel up/down
5 Power On/Off
1 2 3 4 5
Volume up When the OSD is on, functions the same as the Right arrow
1
Volume down When the OSD is on, functions the same as the Left arrow
2 Input key When the OSD is on, press this button to confirm selection
3 Menu key Turns the OSD menu ON and OFF
Channel up When the OSD is on, functions the same as the Up arrow
4
Channel
When the OSD is on, functions the same as the Down arrow
down
14
Rear panel view
1 S-Video 2 SCART
3 CVBS 4 AV-Audio L/R
5 Analog antenna 6 PC Audio-in
7 VGA-in 8 AC-in
9 Earphone
1
S-VIDEO
SCART
VIDEO
AUDIO
4 3 2
9
AC-IN VGA PC AUDIO-IN ANALOG TUNER
8 7 6 5
Remote Control & OSD Operating instructions Chapter 3
Using the Remote Control
Remote control
General keys
1 POWER
Press to turn your TV on/off.
2 MUTE
Press to toggle audio on and off.
3 VOL (up/down)
Press to increase or decrease the volume.
1 2
4 CH (up/down)
Press to sequentially select the TV channel.
3 5 Number keys.
6 RECALL
5 Press to return to the previous channel.
7 ENTER
4 Press to confirm channel number selection.
7
6 8 Input buttons (TV/AV/SCART/PC)
Press to select correct input mode.
8
9 SLEEP
9 10 Press to set a time period after which the TV will switch
itself to standby (15, 30, 45, 60, 90 or 120 minutes).
11 12 10 DISPLAY
Press to display input/channel information
(dependent on input/source type).
13 11 MENU
Press to open or close the Menu.
12 MPX
Press to select the sound input, displayed in the top right-
hand corner (mono, stereo, bilingual).
13 Directional keys/OK
VOL (up/down), CH (up/down)
Teletext
1 INDEX
Press to go to the index page
2 SUBTITLE
1 2 3 4 Press to view subtitles on the screen.
3 REVEAL
Press to reveal hidden telext information
4 TELETEXT
Press to switch from TV/AV to Teletext mode.
5 SIZE
5 Press once to zoom teletext page to 2X.
6 7 Press again to resume.
6 MIX
Press to overlay teletext page on the TV image.
7 HOLD
Press to pause the current teletext page in multi-page
viewing mode.
8
8 Colour buttons (R/G/Y/B)
Operates corresponding button on the teletext page.
16
Using The OSD Menus
OSD navigation
Many of the advanced settings and adjustments are available through using the OSD (onscreen display) menus, as shown in the
example screenshot below.
Basic operations required to navigate these menus (Picture, Audio, Channel management, Options, Settings) are described in this
section.
Navigating the OSD with the remote control
MENU
You can also interact with these menus using the front panel controls. Please see "Front panel view" on page 4 for
details.
There are five main OSD menus. These are: Picture, Audio, Channel management, Options and Settings.
Use the following method to navigate these menus.
MENU
1 Press the MENU button on the remote control or the MENU button on the control panel.
Select your desired menu by using the up and down directional keys to switch between the five
2
menus.
Use the directional keys to interact with the menu. The up / down directions will scroll through the
3 menu options, while left/right will adjust the different settings (for example, in the Picture menu,
settings such as brightness, contrast, etc.). Press MENU to exit.
17
Adjusting the OSD settings
The OSD can be used for adjusting the settings of your LCD TV.
Press the MENU key to open the OSD. You can use the OSD to adjust the picture quality, audio settings, channel settings and
general settings. For advanced settings, please refer to following page:
Adjusting the picture quality
1 Press the MENU key to bring up the OSD.
2 Using the directional keys, select Picture from the OSD. Then navigate to the picture
element you wish to adjust.
3 Use the left or right keys to adjust the sliding scales.
4 The Picture menu can be used to adjust the current Scenario mode, brightness,
contrast, colour, sharpness and other image-related qualities.
Adjusting the audio settings
1 Press the MENU key to bring up the OSD.
2 Using the directional keys, select Audio from the onscreen display. Then navigate to
the feature you wish to adjust.
3 Use the left or right keys to adjust the sliding scale. Press OK to save.
4 The Audio menu can also be used to adjust the treble, balance, sound effects and
other important sound-related settings
Adjusting the channel management
1 Press the MENU key to bring up the OSD.
2 Using the directional keys, select Channel management from the OSD.
3 Use the directional keys to navigate the menus.
4 The Channel management menu can be used to adjust frequency, and set the channel
namings.
Adjusting other options
1 Press the MENU key to bring up the OSD.
2 Using the directional keys, select Options from the OSD.
3 Use the directional keys to navigate the menus.
4 The Options menu can be used to select the picture aspect-ratio mode and reset
options.
Adjusting the settings
1 Press the MENU key to bring up the OSD.
2 Using the directional keys, select Settings from the OSD. Then navigate to the feature
you wish to adjust.
3 The Settings menu can be used to adjust the menu language, set the sleep timer and
other important settings.
The options available on the OSD may vary depending on the TV signal source.
Advanced features
Lock TV
Locking TV content
Lock TV is a handy feature that can block a single channel, multiple channels or all TV sources.
Lock TV allows you to enter a password and effectively stop anyone without the password from watching TV.
MENU
To enable this feature:
Setting a personal PIN
MENU
Press the MENU key on the remote
1
control to bring up the OSD.
2 Use the directional keys to navigate to the Settings menu. Then select Set PIN.
(see note)
MENU
3 Enter a four-digit password. Type it again and press OK to reconfirm.
MENU
4 Press MENU to exit.
The default PIN for this TV is "0000." First enter "0000" when you want to change the PIN. If you forget your PIN,
please enter 6163 to reset.
Locking a single channel
1 Navigate to the channel you wish to manage.
MENU
Press the MENU key on the remote
2
control to bring up the OSD.
Use the directional keys to navigate to the Channel management menu. Then select
3
Lock This Channel.
MENU
4 Enter your PIN. Type it again and press OK to reconfirm.(see page 12)
Locking your TV
MENU
Press the MENU key on the remote
1
control to bring up the OSD.
2 Use the directional keys to navigate to the Settings menu. Then select Lock TV.
MENU
3 Enter your PIN. Type it again and press OK to reconfirm. (see page 12 note)
Re-scan for channels
The first time you completed the setup wizard, all available channels were listed. If you need to re-scan for new channels, please
follow the steps below:
MENU
Scanning for channels
MENU
1 Press the MENU key on the remote control to bring up the OSD.
2 Use the directional keys to navigate and select Channel Management.
MENU
Highlight Auto Scan. Then, select Start
3
and press OK to begin.
MENU
MENU
4 Select OK and press MENU to exit.
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. The display is restored by pressing a key on the keyboard, or clicking the mouse.
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, 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.
22
Machine Disassembly Chapter 4
LCD TV AT2002 series de-assembling procedure
1. Move the monitor our from carton 2. Put the monitor on desk & face down
3. Remove the midea cover & SCREW &TV BOX 4. Loose the screws & remove the stand
5. Remove the bezel & cover 6. TAKE OFF THE CABLE & TAPE
23
7. Loose the shielding screw & shielding 8. Loose the PCB'A screw & LVDS cable
9. Loose the shielding & tape & LVDS cable 10.Loose the Button/B& earphone/b & speaker screw
11. Remove the Button/B& earphone/b & speaker 12. Loose the bezel screw
13. Remove the bezel 14. Remove the bkt l/r screw & bkt l/r
LCD TV AT2002 series packing method
1. Sticker on LCD protection film 2. Put the monitor into the PE or EPE bags
3. Put on the end-cap left / right 4. Put the monitor into carton
Face-up
5. Put all accessories into carton 6. Seal the monitor
Users manual
Power cable
LCD TV AT2002 series handling Notice
Correct Method Incorrect method
Correct Method Incorrect method
Correct Method Incorrect method
Correct Method Incorrect method
Correct Method Incorrect method
Trouble Shooting Chapter 5
1. No Power
NO POWER
Separate MB &
Check Power-board No power-board No
CN201 pin1 12V, pin5 5V Check CN201 pin1 Change
Correct ?? 12V, pin5 5V Power-board
Correct ??
Yes
Yes
Check FB14 3.3V
FB27 1.8V correct?
Separate MB & Yes
I/O-board
Change
Check CN201 pin1
I/O-board
Change 12V, pin5 5V
M/B Correct ??
No
Change
M/B
2. No picture, No backlight.
No picture
No backlight
Check Power/B CN201
Pin8 3.3V correct?
No
Yes
Change
power board Change
power board
No
Check LCD panel
3. No Characters , Missing Color
No Characters , Missing Color
Check CN6 No Change
Pin6~9 5V correct? M/B
YES
Yes
Check Change
TTL FFC cable TTL FFC cable
No
Check LCD panel
4. VGA mode Always show NO SIGNE
VGA always show No
Signal
Check VGA cable No Change
correct? VGA cable
YES
Yes
Check input CN2 Change
Pin13 H-sync ,pin14 V-sync M/B
correct?
No
Check PC
5. Video mode always show NO SIGNEL
Video-mode always show
No SignalVideo-mode
always show
Check Video cable No Change
correct? Video cable
YES
Yes
Check I/O board Change
correct? M/B
No
Change I/O
board
White-Balance, Luminance Adjustment Chapter 6
Approximately 30 minutes should be allowed for warm up before proceeding white
balance adjustment.
Before started adjust white balance ,please setting the Chroma-7120 MEM. Channel 1 to 12000 color,
MEM. channel 2 to 10000 color, MEM. channel 3 to 8000 color, MEM.
( our 12000 parameter is x = 272 ± 15, y = 278 ± 15, Y = 350 ± 7 cd/m2 ;
2
10000 parameter is x = 279 ± 15, y = 290 ± 15, Y = 350± 7 cd/m ;
2
8000 parameter is x = 295 ± 15, y = 305 ± 15, Y = 350± 7 cd/m
Color Temp. 12000 10000 8000
X 272 279 295
Y 278 290 305
Y 350 350 350
How to setting MEM. channel you can reference to Chroma-7120 user guide or simple use " SC" key and
" NEXT" key to modify x, y , Y value and use "ID" key to modify the TEXT description
Following is the procedure to do white-balance adjust
I.Press Number key Power key + manual will into the factory mode, and press Menu key the
OSD will show menu and a word "F" at LEFT top of Menu.
1. In the factory mode select "COLOR TEMP" may be select the difference color temp.
2. Select SCALER Adjustment:
RG, GG, BG R, G, B Gain adjust.
RB, GB, BB R, G, B Bias adjust.
so if the R, G, B gain and bias is 255 to 256, the "P0 256"will change to "P10">
Notes: adjust AV mode the same as PC mode, except the luminance (Pc mode is 350cd/m2,
Av is 350cd/m2).
II. Bias (Low luminance) adjustment:
1. Set the raster pattern (Black pattern with 800× ) Input.
2. Set the contrast on OSD window to the value=80, Brightness set to "80"
3. Adjust the brightness on OSD until chroma 7120 measurement reach the lowest value.
34
III, Gain adjustment:
A. Adjust 12000 color-temperature:
1. Set the Contrast of OSD function to 80 and Adjust Brightness to chroma-7120 Y>350 cd/m2
2. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
3. Switch the MEM.channel to Channel 02 (with up or down arrow on chroma-7120)
4. The LCD-indicator on chroma-7120 will show x = 272 ± 15, y = 278 ± 15, Y = 350 ± 7 cd/m2
5. Adjust the Color (user) Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value G=100
7. Adjust the Color (user) Mode: BLUE on OSD window, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure (Item 5,6,7) until chroma-7120 RGB value meet the tolerance =100±2
9. Switch the chroma-7120 to x, y, Y mode With press "MODE" button to check the color temp is in SPEC. or not.
10. Press MENU to exit the SCALER page and press Save to save the current color temp.
B. Adjust 10000 color-temperature:
1. Set the Contrast of OSD function to 80 and Adjust Brightness to chroma-7120 Y>350 cd/m2
2. Switch the chroma-7120 to RGB-mode (with press "MODE" button )
3. Switch the MEM.channel to Channel 02 ( with up or down arrow on chroma-7120 )
4. The LCD-indicator on chroma-7120 will show x = 279 ± 15, y = 290 ± 15, Y = 350 ± 7 cd/m2
5. Adjust the Color(user)Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value G=100
7. Adjust the Color(user)Mode: BLUE on OSD window, until chroma-7120 indicator reached the value B=100
8. Repeat above procedure (item 5,6,7) until chroma-7120 RGB value meet the tolerance =100 ±2
9. Switch the chroma-7120 to x, y, Y mode with press "MODE" button
10. Press MENU to exit the SCALER page and press Save to save the current color temp.
C. Adjust 8000 color-temperature:
1. Set the Contrast of OSD function to 80 and Adjust Brightness to chroma-7120 Y>350 cd/m2
2. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
3. Switch the MEM.channel to Channel 03 (with up or down arrow on chroma-7120)
4. The LCD-indicator on chroma-7120 will show x = 295 ± 15, y = 305 ± 15, Y = 350 ± 7 cd/m2
5. Adjust the Color (user) Mode: RED on OSD window, until chroma 7120 indicator reached the value R=100
6. Adjust the Color (user) Mode: GREEN on OSD window, until chroma-7120 indicator reached the value
G=100
7. Adjust the Color (user) Mode: BLUE on OSD window, until chroma-7120 indicator reached the value
B=100
8. Repeat above procedure ( item 5,6,7) until chroma-7120 RGB value meet the tolerance =100 ± 2
9. Switch the chroma-7120 to XyY mode With press "MODE" button
10. Press MENU to exit the SCALER page and press Save to save the current color temp.
35
FRU (Field Replaceable Unit) List Chapter 7
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AT2002.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.
36
Exploded Diagram (Model: AT2002)
Parts
CATEGORY PARTNAME DESCRIPTION
BOARD
MAIN BOARD FIRMWARE CTRL
POWER BOARD POWER BOARD
BUTTON BOARD KEY CTRL FIRMWARE
EARPHONE CTRL
EARPHONE BOARD
FIRMWARE
LCD PANEL 20.1"
A201SN02 V5
20.1" A201SN02 V5
CASE / COVER ASSEMBLY
FRONT BEZEL
FRONT BEZEL
WITH BEZEL PLATE
39 Chapter 4
CATEGORY PARTNAME DESCRIPTION
BACK COVER BACK COVER
BASE TO SUPPORT
BASE
THE STAND
40 Chapter 4
PCB Layout Chapter 7
.
40
CAM350 V 7.6 : Fri Jun 02 14:18:32 2006 - (Untitled) : silk_top.art
5 4 3 2 1
+5V_IN Schematic Diagram Chapter 7
R1 22/6 C1
CN1 CVBS 0.1uF/6
B4 3
D 49 50 D
SCART-1-IN_PIN8 47 48 SCART-1-IN_FB
45 46
CVBS 43 44 SCART-1-OUT_CVBS
41 42 SCART-1-OUT_CVBS 3
SVIDEO_C 39 40 TV_CVBS_1
37 38 Pb_SCART-IN_B R2 C2
Y_SCART-IN_G 35 36 TV_CVBS_1
33 34 2 1 A4 3
SCART-1-IN_CVBS 31 32 Pr_SCART-IN_R/C 20/6 0.1uF/6
29 30
SVIDEO_Y 27 28 detect
25 26 DET_SCART-COMP 3
6 5V_SCL 23 24
21 22 5V_SDA 6
19 20
6 TUNER_MONO 17 18 TUNER_SIF 6
AUDIO_LIN-1 15 16 AUDIO_RIN-1
13 14
AUDIO_LIN-2 11 12 AUDIO_RIN-2
9 10
7 8
6 SCART-1-OUT_L 5 6 SCART-1-OUT_R 6
3 4
C 1 2 +5Vt C3
C
+12V_SW
R3 20/6 0.1uF/6
3081-50p SVIDEO_C
SV4 3
GND AGND AGND GND
SVIDEO_Y
SV1 3
R4 20/6 C4
R5 0.1uF/6
. FB
PWM3-GPIO14-FB 3
SCART-1-IN_PIN8 0R/6
R6 20R/1%
R7 C5
3K/6F SCART-1-IN_CVBS
SV2 3
0.1uF/6
LBADC_IN3 3 R235
R9
SCART-1-IN_FB
SV3 3
R8
0R/6 0R/6
1K/6F C6
B R11 R10 20/6 0.1uF/6 B
Y_SCART-IN_G
B3 3
1k/6 R5 ,R9 & R11 FOR PAL ONLY
GND C7
GND R12 20/6 0.1uF/6
Pb_SCART-IN_B
C3 3
Pr_SCART-IN_R/C
A3 3
R13 2