THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS
BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY
OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES,
ERRORS OR OMISSIONS.
1
Revision List
Version
Release Date
Revision Instructions
TPV Model
A00
Oct.-10-2005
Initial Release
EAA5MNNKC3ACTM
AOC A20S431
2
Table Of Contents
Revision List .............…………...............……..............................................…………..........................
1
Table Of Contents.............................................................................................…………..........................
2
1. Specification For LCD ................................................................................…………..........................
3
1.1 General Specifications ................................................................................................…………....….
3
1.2 LCD TV Description .....................................................................…………...………........................
Audio Output: L / R
Speaker (built-in): Two 2 watt speakers
Headphone Mini-jack for stereo (3.5ø)
OSD language
English / French / Spanish / Portuguese
Table Stand
Included
Wall Mount
VESA 100 x 100 mm
Power
Power Supply
AC100V~240V, 50/60Hz
Power Consumption
<75W
Panel Tilt
Forwards/Backwards/Rotation
-4°/ +18° / ± 35°
Environment
Operating
+ 0 °C ~ + 40 °C
Storage
- 25 °C ~ + 60 °C
Operating
10% ~ 85%
Dimension
W x H x D (with stand)
498 x 489 x 256(mm)
Weight (net)
Kg (w/o Accessories)
9 Kg
Weight (Gross)
Kg (included Accessories)
11 Kg
Accessories
Remote Controller, Batteries (AAAx2), AC Power Cord,
User‟s Manual, Audio Cable
1.1 General Specifications
AOC A20S431
4
THE USE OF REMOTE CONTROL
MENU
Press repeatedly to
Display OSD menu.
V-CHIP
Press this button to setup
parental control.
SWAP
Not Supported.
SIZE
Not Supported.
POWER
Press to turn on/off the
TV. The TV is never
completely powered off
unless it is physically
unplugged.
0~9/100 Digit buttons
To select a TV channel.
CH
Press or ( or ) to
browse through the TV
channels, which are not
erased. To view a blocked
channel, use the digital
buttons to access the
channel and enter your
access code.
VOL
Press + or – to adjust the
volume.
PC
No Supported.
SLEEP
With this key you can set a
time period after which the
TV should switch itself to
standby. Press the key
repeatedly to select the
number of minutes. The
counter runs from
30,60,90,120 minutes.
PIP
Not Supported.
POP
Not Supported.
MUTE
Temporarily interrupt the
sound or restore it.
DISPLAY
Press this button to display Channel
number on the right-top corner.
MTS /SAP
Press this key to activate
Multi-channel Television
Sound, Stereo or Mono
sound.
PRE-CH
To display the previously
selected TV channel.
TV/VIDEO
Select your input source:
Press repeatedly to select
TV, AV, S-VIDEO.
CAPTION
Press this button to
Turn Closed Caption on.
Be sure you have selected
Caption On in the Setup menu.
OPERATING INSTRUCTIONS
AOC A20S431
AOC A20S431
5
MAIN MENU
TO USE THE MENU
1. Press the MENU button to display each menu.
2. Use the cursor up/down to select a menu item.
3. Use the cursor left/right to enter a submenu or enable/disable the function.
4. Press the MENU button to exit the menu.
Press the MENU button into the main OSD (On Screen Display). Adjust item include SOUND SETUP、OSD
SETUP、TV SETUP and PICTURE SETUP.
SOUND Setup
1. Volume is adjusted from 0 to 100.
2. Bass and Treble are adjusted from 0 to 100.
You can adjust picture Volume, Bass and Treble to the levels you prefer.
3. The adjustment range of balance is from 0 to 100.
0 to 50 is used to adjust the volume of right speaker from low to loud.
50 to 100 is used to adjust the volume of left speaker from loud to low.
4. The Mute is “ON” or “OFF”, and if the Mute is ON, there is no sound output.
OSD Setup
1. Set OSD language
2. Adjust the horizontal position of the OSD.
3. Adjust the vertical position of the OSD.
4. Adjust the OSD time-out.
5. OSD Background Adjustment
6
TV Setup
AOC A20S431
1. AIR/CATV for different TV input solution, RF and cable.
2. Auto searching is used for searching all TV program channels. After finishing search and exiting, the machine will
save the program automatically, you can also press “menu” to break the searching, but only the searched
programs are saved when the machine exits searching.
3. Add/Erase is for add or delete the current channel for memorizes.
4. Current Program is display the current channel number.
5. Sleep Timer
It is for set a time period after which the TV should switch itself to standby. The counter runs from Disabled 30 >
60 > 90 > 120 minutes. (The setting will be removed when using reset)
6. Closed Caption
It‟s allows you to read the dialogue of television programs on the TV screen. Designed to help the hearing
impaired, this feature uses on screen “ text boxes” to show dialogue and conversations wile the TV program is in
progress. Captions will appear on the screen only during captioned
broadcasts.
Remark: the captions do not always use correct spelling and grammar.
Not all TV programs and product commercials are made for broadcast with Closed Caption information included.
Refer to your area‟s TV program listings for the TV channels and times of closed Caption shows.
The captioned programs are usually noted in the TV listings with service Marks such as “CC”.
Caption Mode: CC1~CC4
Dialogue (and descriptions) for the action on the captioned TV program shows on screen.
Text Mode: TT1~TT4
Often used for channel guide, schedules, bulletin board information for Closed Caption programs, news, weather
information or stock marker reports.
Not all Closed Caption modes are necessarily being use by a TV channel during the transmission of a Closed
Caption program.
7
V-CHIP Setup
Select V-Chip on OSD then enter 4 digits of pin number.
Initial pin number is “0000”.
If you enter an incorrect pin number “Error” message will be displayed.
AOC A20S431
It is the parental control function (V-chip). It is used to block program viewing based on the ratings by the
broadcaster. The default setting is to allow all programs to be viewed. Viewing can be blocked by the type of
program and by the categories chosen be blocked. It is also possible to block all program viewing for a time period.
A. There are two items could be defined. One is TV Guidelines another one is Movie Guidelines.
B. Setting up TV Guidelines
Use Up/Down arrow buttons to move around the matrix and press Right arrow button to change the value form
“U” to “B” or ”B” to ”U”
U: Unblock
B: Block
C. Setting up Movie Guidelines
Use Up/Down arrow buttons to move around the matrix and press Right arrow button to change the value from
“U” to „B” or “B” to “U”
AOC A20S431
8
D. CHANGE PIN Personal Identification Number is for change password to control the V-chip setup; it‟s included
three steps. ENTER PIN to enable this function, then ENTER NEW PIN to change a new one. After that
COMFIRM NEW PIN.
Picture Setup
1. Contrast, Brightness and Saturation are adjusted from 0 to 100.
2. Hue is adjusted from 0 to 100.
3. Sharpness is adjusted from 0 to100.
Hue is only adjusted in NTSC telecast system.
You can adjust contrast, brightness, saturation, hue, black level and sharpness to the levels you prefer.
4. Color Tone is for AV、S-VIDEO and TV color, you can select warm or cool.
9
CONNECT PERIPHERAL EQUIPMENT
FRONT PANEL CONTROL KNOBS
Power Key⑦ : Press to turn on or off the TV.
MENU Key⑥ : Press to show the OSD menu and exit OSD menu at the TV.
Down / Up Key⑤④ : Press to perform select function and channel.
+ /- Key②③ :Press to confirm your function selection and adjustment.
Source Key① : Press to select your input source.
AOC A20S431
There is a wide range of video and audio equipment that can be connected to your TV. The following connection
diagrams show you how to connect them.
PREPARATION
Remove the back plate at the back of the TV as shown on the illustration opposite. Lay the LCD TV with the screen
down on a table, as it will be easier to connect your peripheral equipment. Please take precaution not to damage the
screen.
①: RF TV port
②: Earphone output port
③: Right audio input port
④: Left audio input port
⑤: AV video port
⑥: S-VIDEO video port
⑦: Power input port
AOC A20S431
10
CAMERA, CAMCORDER, VIDEO GAME SET …
VIDEO RECORDER
How to connect
1. Connect the supplied antenna cable to the RF IN port of your VCR.
2. Connect another RF cable ① from the output RF of your VCR to the Antenna input of your TV. Better quality
when playing from your VCR can be obtained if you also connect the Video, Audio LEFT AND right (only for
stereo equipment) cables ⑤ to the VIDEO, AUDIO L and R inputs AV.
If your VCR has an S-VHS video jack:
For improved picture quality, connect a S-Video cable with the S-VIDEO input on the TV instead of connecting the
VCR to the VIDEO port.
S-Video does not provide audio, audio cables must still be connected to provide sound③④.
Watching VCR
1. If you use connection①, select the TV channel search.
2. If you use connection⑤, select AV.
3. If you use connection⑥. Select s-video
4. Insert videotape in the VCR and press the PLAY button.
DVD PLAYER
Connect the video output port of DVD player to the video input port of TV.
Connect the left and right audio of DVD to the left and right channels of audio input of TV.
If your DVD player is equipped with S-VHS video port:
For better quality picture, please connect the S-video cable to the S-video input port⑥ of TV. Connecting the
audio output ports③④ through audio cable is a must since S-video input port is not attached with audio.
How to play
If you use connection⑤, please select video AV input;
If you use connection⑥, please select S-VIDEO input;
DIGITAL CAMERA
How to connect
1. Connect your digital camera, camcorder, videogame set… to VIDEO port ⑥ AUDIO R ③ AUDIO L ④ for
mono equipment.
2. S-VHS quality with an S-VHS camcorder is obtained by connecting the
S-VHS cable with the S-VIDEO input ⑥ and AUDIO input ③④.
How to use
1. Select AV or S-VIDEO.
2. Turn on the external AV equipment.
HEADPHONE
1. Insert the plug into the headphone port ②, when insert headphone will block speaker audio output.
2. Press the key on the remote control to switch off the sound from the headphone and the internal
Loudspeakers of the TV.
3. Press the cursor lift/right to adjust the volume.
11
AOC A20S431
Care of the screen
Do not rub or strike the screen with anything hard as this may scratch, mar, or damage the screen permanently.
Unplug the screen before cleaning the screen. Dust the TV by wiping the screen and the cabinet with a soft, clean
cloth. If the screen requires additional cleaning, use a clean, damp cloth. Do not use liquid cleaners or aerosol
cleaners.
Mobile telephone warning
To avoid disturbances in picture and sound, malfunctioning of your TV or even damage to the TV, keep away your
mobile telephone from the TV.
End of life directives
We are paying a lot of attention to produce environmentally friendly in green focal areas. Your new receiver contains
materials that can be recycled and reused.
At the end of its life specialized companies can dismantle the discarded receiver to concentrate the reusable
materials and to minimize the amount of materials to be disposed of.
Please ensure you dispose of your old receiver according to local regulations.
AOC A20S431
12
1.2 LCD TV Description
The LCD TV will contain a main board, a power board, a tuner board, a key board, IR board, and a headphone
board. The main board and power board will house the flat panel to control logic I2C bus, 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 six CCFLs (Cold Cathode Fluorescent Tube).
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.
1.3 Interface Connector
1) RF TV port
2) Earphone output port
3) Right audio input port
4) Left audio input port
5) AV video port
6) S-VIDEO video port
7) Power input port
AOC A20S431
13
2. Precautions And Notices
2.1 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.
Do not apply any strong mechanical shock to the LCD panel.
2.2 Operating Precaution
Please be sure to unplug the power cord before remove the rear-cover. (Be sure the power is turn-off)
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.
Please consider that LCD backlight takes longer time to become stable of radiation characteristic in low
temperature than in room temperature.
Please pay attention to displaying the same pattern for very long-time. Image might stick on LCD.
2.3 Storage Precaution
When you store LCD for a long time, it is recommended to keep the temperature between 0°C -40°C without the
exposure of sunlight and to keep the humidity less than 85% RH.
Please do not leave the LCD in the environment of high humidity and high temperature such as 60°C, 85%RH.
Please do not leave the LCD in the environment of low temperature; below -25°C.
2.4 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.
14
3. Mechanical Instructions
1). Lay TV on a flat, soft and clean surface.
AOC A20S431
2). Remove the 4 screws to remove stand and base.
3). Remove the 8 screws to remove rear cover.
15
4). Remove 3 screws to remove BKT-CARD READER.
AOC A20S431
5). Remove 3 screws to remove shield.
6). After removing the shield, disconnect the connecter wire with BKT- CARD READER and power board.
16
7). Disconnect the 20-pin header, and remove the 1 screw to remove tuner board.
AOC A20S431
8). Disconnect the connector wire.
9). Remove the 4 screws, and disconnect the connector wire to remove main board.
17
10). Remove the 6 screws to remove power board.
AOC A20S431
11). Remove the 11 screws to remove key board and two speakers.
18
4. BOM List
Location
Part NO
Description
Quantity
Unit
CBPFAA5KMNACT
CONVERSION BOARD
1
PCS
PWTV2066CM1
20" POWER BOARD
1
PCS
TUPFAAA1
TUNER BOARD FOR 20" TV
1
PCS
15T5930 8
BKT CONNECTOP
1
PCS
15T8024 1
AC-SOCKET
1
PCS
15T8152 7
MAIN FRANE
1
PCS
34T1522 GM L
HANDLE
1
PCS
34T1529 GM L
COVER CABLE
1
PCS
34T1530 GM L
COVER HINGE
1
PCS
44T2006 1
EPS 1 PCS
44T2006 2
EPS 1 PCS
44T2006624 1A
CARTON
1
PCS
44T3231 15
EVA WASHER
1
PCS
44T3231 15528
EVA WASHER
1
PCS
44TZ001200 4B
PIZZA BOX
1
PCS
45T 88606 3
PE BAG FOR BASE
1
PCS
45T 88609 20
EPE COVER-AOC
1
PCS
45T 88626 4
PE BAG FOR MONITOR
1
PCS
50T 500 1
CABLE TIE
6
PCS
50T 500509
CABLE TIE
2
PCS
52T 1186
SMALL TAPE
10
CM
52T 1209500
ALUMINIUM TAPE
1
PCS
52T 1211 A
ADHESIVE TYPE
4
PCS
52T6020 6
PROTECT FILM
1
PCS
85T 689 4
SHIELD COVER
1
PCS
89T176J 50514
FFC CABLE 5OP
1
PCS
89T401A18NHR5
POWER CORD
1
PCS
92TB1JX1A31GF
BATTERY
2
PCS
95T8014 2505
RIGHT SPERKER HARNESS
1
PCS
95T8014 3517
LEFT SPERKER HARNESS
1
PCS
95T8014 5528
EARPHONE HARNESS
1
PCS
95T8014 16609
HARNESS
1
PCS
98TR7SW3NEACF
Remote Control
1
PCS
M1T 330 4128
SCREW
2
PCS
M1T 330 4128
SCREW
3
PCS
M1T 330 4128
SCREW
1
PCS
M1T 330 6120
SCREW
3
PCS
M1T1030 14128
SCREW
4
PCS
M1T1130 6128
SCREW
15
PCS
M1T1140 4128
SCREW 4X6
1
PCS
M1T1740 14120
SCREW
4
PCS
M1T1740 14120
SCREW
4
PCS
Q1T 330 8120
SCREW 3X8mm
2
PCS
AOC A20S431
AOC A20S431
19
Q1T 340 12 47
SCREW T4X12
5
PCS
Q1T 930 6128
SCREW T3X6
2
PCS
Q1T1030 12128
SCREW
10
PCS
705G 780 77 04
SW901 ASS'Y FOR ROHS
1
PCS
705GAA5FB34002
BACK COVER ASS'Y
1
PCS
750VVMA1T01 1
CMO 20.1' C4 PANEL
1
PCS
SMTFAA5KMNACT
MAIN BOARD
1
PCS
CN113
33T802420C H
WAFER
1
PCS
CN101
33T8027 12
WAFER 2*6P 2.0MM R/A
1
PCS
CN107
33T8027 16
WAFER 16PIN 2.0mm DIP
1
PCS
40T 457624 1B
CPU LABEL
1
PCS
40T 45762412B
CBPC LABEL
1
PCS
U402
56T1125592MT3
NT68F632ALG
1
PCS
C402
67T305V101 3
1000UF +-2 16V
1
PCS
C221
67T309V100 3
10uf =_20% 16v
1
PCS
C233
67T309V100 3
10uf =_20% 16v
1
PCS
C122
67T309V470 3
47UF 16V 85C
1
PCS
C209
67T309V470 3
47UF 16V 85C
1
PCS
C216
67T309V470 3
47UF 16V 85C
1
PCS
C420
67T309V470 3
47UF 16V 85C
1
PCS
C423
67T309V470 3
47UF 16V 85C
1
PCS
C428
67T309V470 3
47UF 16V 85C
1
PCS
C438
67T309V470 3
47UF 16V 85C
1
PCS
CN103
88T 78 13 2C
RCA JACK
1
PCS
CN104
88T 100 6 TO
4PIN MINI DIN JACK
1
PCS
X401
93T 2251B J
NXS12.000AC30F-BT-2
1
PCS
X201
93T 2265B J
20.250 AE13F-BK4
1
PCS
715V1618 1
PCB 1 PCS
CN115
33T8019 50
CONNECTOR 50P
1
PCS
ZD407
56T 158501
AZ431AN-AE1
1
PCS
U401
56T 562503
NT68521-E
1
PCS
U101
56T 563 25
AIC1084-33PE
1
PCS
U103
56T 563 25
AIC1084-33PE
1
PCS
Q106
56T 566 12
AO 4801
1
PCS
U102
56T 585 7
RT9164-25PL
1
PCS
U301
56T 623 1
Z8612912SSG SOIC-18
1
PCS
U201
56T 640 1
VPC3230D
1
PCS
U405
56T1133 56
M24C16-WMN6TP
1
PCS
Q102
57T 417 4
CHIP PMBS3904 BY PHILIP
1
PCS
Q103
57T 417 4
CHIP PMBS3904 BY PHILIP
1
PCS
Q104
57T 417 4
CHIP PMBS3904 BY PHILIP
1
PCS
Q301
57T 417 4
CHIP PMBS3904 BY PHILIP
1
PCS
Q401
57T 417 4
CHIP PMBS3904 BY PHILIP
1
PCS
Q402
57T 417 4
CHIP PMBS3904 BY PHILIP
1
PCS
Q105
57T 763 3
AO4411L SO-8 BY AOS SMT
1
PCS
RP201
61V 125220 8
CHIP ARRAY 22 OHM 1/16W
1
PCS
AOC A20S431
20
RP202
61V 125220 8
CHIP ARRAY 22 OHM 1/16W
1
PCS
R210
61V0603000
CHIPR 0OHM +-5% 1/10W
1
PCS
R311
61V0603000
CHIPR 0OHM +-5% 1/10W
1
PCS
R208
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R313
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R408
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R410
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R411
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R412
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R413
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R433
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R434
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R435
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R436
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R438
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R439
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R440
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R453
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R454
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R455
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R456
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R457
61V0603101
CHIPR 100 OHM+-5% 1/10W
1
PCS
R113
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R213
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R214
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R215
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R314
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R401
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R406
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R422
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R431
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R432
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R437
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R463
61V0603102
CHIPR 1K OHM+-5% 1/10W
1
PCS
R112
61V0603103
CHIPR 10K OHM+-5% 1/10W
1
PCS
R310
61V0603103
CHIPR 10K OHM+-5% 1/10W
1
PCS
R105
61V0603104
CHIPR 100K OHM+-5% 1/10
1
PCS
R107
61V0603104
CHIPR 100K OHM+-5% 1/10
1
PCS
R109
61V0603104
CHIPR 100K OHM+-5% 1/10
1
PCS
R405
61V0603104
CHIPR 100K OHM+-5% 1/10
1
PCS
R407
61V0603104
CHIPR 100K OHM+-5% 1/10
1
PCS
R202
61V0603105
CHIP 1MOHM 1/16W
1
PCS
R409
61V0603105
CHIP 1MOHM 1/16W
1
PCS
R425
61V0603153
CHIPR 15KOHM +-5% 1/16W
1
PCS
R414
61V0603202
CHIP 2K OHM 1/16W
1
PCS
R415
61V0603202
CHIP 2K OHM 1/16W
1
PCS
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