AOC L32W432 Schematic
32″ LCD TV AOC L32W432
Service
Service
Service
显示桌面.scf
Horizontal Frequency
31. 5 kHz to 49 kHz
TABLE OF CONTENTS
Description Page Description Page
Table Of Contents.......…….............................…........1
Revision List……………………………………………....2
Important Safety Notice.......................................……......3
1. General Specification..............................………........4
2. Operating Instructions…………………….……….......6
2.1. The Use Of Remote Control…….………….…….......6
2.2. Front Panel Control Knobs……………….……….....6
2.3. To Use The Menu…...…………………….……….......7
2.4. How To Connect…….…………………….……….....14
3. Input/Output Specification…………....................…....19
4. Mechanical Instructions…………………….................21
5. Repair Flow Chart ……………………….…….…….....25
6.White-Balance, Luminance Adjustment….............31
7.PCB Layout …………..………………....….......35
7.1 Main Board…………..………….……….......35
7.2 Power Board…………..………….……….......38
7.3 Tuner Board…………………..……….......40
7.4 IR Board……………..…………..……….......41
8. Block Diagram…………………………………..42
9. Schematic Diagram………………………………...43
9.1 Main Board………...………………………….......43
9.2 Power Board………...……….……….…………...54
9.3 Tuner Board………………….………….…….......56
10.Exploded View..……………............................60
11.BOM List……………….……………………….62
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
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32″ LCD TV AOC L32W432
Revision List
Version Release Date Revision History TPV Model
A00 Dec.-20-2007 Initial Release E327MTNSW2AONN
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32″ LCD TV AOC L32W432
Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service
procedures recommended by AOC and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed for the purpose. The special
tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods
may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE NOT
EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in which
service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics may create shock,
fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission from AOC. AOC
assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may result
in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF
THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may
damage the panel.)
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32″ LCD TV AOC L32W432
1. General Specification
Características
Itens Especificações
Resolução WXGA (1366 x 768) Receptor integrado para 181 canais, com
MTS e SAP, Legenda fechada Entrada para PC Entrada HDMI Tela de
31.5polegadas
Tamanho da tela polegadasPainel de cristal líquido de 31.5
Painel de
cristal
líquido
(LCD)
Função de
TV
Entradas de
vídeo
Tamanho da Imagem V
ís i vel
Proporção (L/A) 16:9
Resolução 1366 x 768 (WXGA)
Área de visualização
(abertura) H x V
Distância entre pixels 0.1730 (H) x0.5190 (V)
Cores 16,7 milhões
Tipo / duração da
lâmpada
Temperatura de cor Fria / quente
Sistema de recepção
de TV
Sistema de som MTS / SAP
Sistemas de cor NTSC / PALN / PALM
AV1 RCA x 1 Audio L/R x 1
AV2
S-VIDEO S-VIDEO x 1 Canal de áudio L / R x 1
HDMI HDMI x 1
COMPONENTE
(480i/480p/720p/1080i)
800mm Diagonal
714.96mm x 404.6mm
Lâmp. 16 / 60000 h
NTSC, 181 canais com sintonia PLL eletrônica
RCA x 1
S-Video x 1
Y,Pb,Pr x 1 Audio L/R x 1
Audio L/R x 1 (compartilhada)
Interface de
mídia de alta
definição
Entrada para
PC
Saída de
áudio
Idioma do
OSD
Alimentação
Entrada de sinal Analógica: D-Sub de 15 pinos (cabo removível)
Compatibilidade
com PnP
Freqüência de
entrada
Resolução
recomendada
Áudio de entrada
Saída de áudio: L /
R
Inglês / espanhol / português
Alimentação 100 a 240 V CA, 50/60 Hz
DDC 2B
Analógica: FH: 31,5 a 49 kHz FV: 56 a 75 Hz
Analógica: 1024 x 768 (60 Hz)
Miniconector para fone de ouvido estéreo (ø 3,5 mm)
Alto-falante (embutido): dois alto-falantes de 15 watts
Miniconector para fone de ouvido estéreo (ø 3,5 mm)
Saída de linha (RCA L/R)
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32″ LCD TV AOC L32W432
elétrica
Ambiente
Consumo < 180W
Temperatura,
funcionando
Temperatura,
armazenamento
Umidade,
funcionamento.
+ 0°C a + 40°C
- 10°C a + 60°C
10 % a 85 %
Inclinação do
painel
Dimensões
Peso (líquido)
Acessórios
Para frente / para
trás / giro lateral
L x A x P (com
base)
kg (sem
acessórios)
Controle remoto, pilhas (x2), cabo de alimentação CA, cabo de sinal D-Sub,
Cabo de áudio, manual do usuário.
-5° / +20° / ±35°
810x 606 x 247 mm
15.6 Kg
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32″ LCD TV AOC L32W432
2. Operations Instructions
2.1 The Use of Remote Control
2.2 Front Panel Control Knobs
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32″ LCD TV AOC L32W432
: pressione para ligar e desligar o televisor.
MENU: acessa e sai do menu do televisor.
Para cima / para abaixo: serve para mudar os canais e selecionar funções.
- / +: aperte para confirmar a seleção ou o ajuste.
SOURCE: seleciona a origem do sinal de entrada.
2.3 OSD Operations
To use the menus：
1. Pressione o botão MENU para mostrar cada lista de ajustes.
2. Use o cursor para cima / para baixo para selecionar um item do menu.
3. Use o cursor esquerdo / direito para acessar um submenu ou ligar /
desligar uma função.
4. Pressione o botão MENU para sair.
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
2.4 How to Connect
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
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32″ LCD TV AOC L32W432
3. Input/Output Specification
3.1 Input Signal connector
This procedure gives you instructions for installing and using the LCD TV display.
Lay 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.
Connect the 15-pin D-SUB 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:
15 - Pin Color Display Signal Cable
Pin Signal Assignment Pin Signal Assignment
1 Red Video 9 No Pin!
2 Green Video 10 Sync. Ground
3 Blue Video 11 SDA (Remote Control)
4 SCL (Remote Control) 12 Serial Data for DDC
5 GROUND 13 Horizontal Sync.
6 Red Video Ground 14 Vertical Sync.
7 Green Video Ground 15 Serial Clock for DDC
8 Blue Video Ground
HDMI Digital connector pin assignments
Pin Signal Assignment Pin Signal Assignment
1 TMDS Data2+ 2 TMDS Data2 Shield
3 TMDS Data2- 4 TMDS Data1+
5 TMDS Data1 Shield 6 TMDS Data17 TMDS Data0+ 8 TMDS Data0 Shield
9 TMDS Data0- 10 TMDS Clock+
11 TMDS Clock Shield 12 TMDS Clock13 CEC 14 NC
15 SCL 16 SDA
17 DDC/CEC Ground 18 +5V Power
19 Hot Plug Detect
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32″ LCD TV AOC L32W432
Apply power to the display by turning the power switch to the "ON" position and allow about ten seconds for
Panel warm-up. The Power-On indicator lights "GREEN" when the display is on.
With proper signals feed to the display, a pattern or data should appear on the screen, adjust the brightness and
contrast to the most pleasing display, or press auto-adjust to get the best picture-quality.
This TV (with PC function) has power saving function following the VESA DPMS. Be sure to connect the signal
cable to the PC.
If your TV requires service, it must be returned with the power cord.
3.2 Factory Preset Display Modes:
Analog RGB input signal timing
VESA MODES
Mod
e
VGA
SVG
A
XGA
WXG
A
Resolution Total
640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175
640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500
640x480@75Hz 840 x 500 37.5 N 75 N 31.500
800x600@56Hz 1024 x 625 35.156 P 56.25 P 36.000
800x600@60Hz 1056 x 628 37.879 P 60.317 P 40.000
800x600@72Hz 1040 x 666 48.097 P 72.188 P 40.000
800x600@75Hz 1056 x 625 460875 P 75 P 49.5
1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000
1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000
1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750
1360x768@60Hz 1792x795 47.712 P 60.015 P 85.5
HDMI input signal timing
VESA MODES
Horizontal Vertical
Nominal
Frequency
(KHz)
Polarity
Sync
Nominal
Freq.
(Hz)
Sync
Polarit
y
Nominal
Pixel
Clock
(MHz)
Mode Resolution Total
720P
1080i
480P
1280×720P 45.00 60 74.25
1920X1080i 33.75 60 74.25
720X480P 31.54 60 27.00
Frequency
Horizontal Vertical
Nominal
(KHz)
20
Sync
Polarity
Nominal
Freq.
(Hz)
Sync
Polarity
Nominal
Pixel
Clock
(MHz)
32″ LCD TV AOC L32W432
4. Mechanical Instructions
Step Figure Description
Lay the LCD-TV
on a flat, soft
Preparation
and clean
surface.
Disassemble
the stand cover.
Remove
the stand
remove
the rear
cover
Remove the 7
screws
Remove the 8
screws to
remove the rear
cover
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32″ LCD TV AOC L32W432
Remove the 8
screws
Remove
the shield
And
speakers
1.Remove the
shield
2.Remove the
speakers
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32″ LCD TV AOC L32W432
Remove
the main
board &
power
board
Remove the 11
screws & 7
connectors to
remove the
main board and
power board
Remove
the main
frame
Remove the 19
screws to
remove the
main frame
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32″ LCD TV AOC L32W432
Remove
the IR
board and
KEY board
Remove the 4
screwa to
release the IR
and KEY board
Remove
the bezel
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32″ LCD TV AOC L32W432
5. Repair Flow Chart
5.1 No Power (No LED indicator)
Check power cord and board interface
Plug in power cord and interface
Check F901, BD901, D901, D902
Check IC981, D928 (12V)
OK
OK
NG
Check the load
NG
Replace F901 or BD901 or D910 or D902
Replace IC981or D928
OK
Check IC901
NG
Replace IC901
OK
Check Q901
OK
Check IC941
OK
Check Q941
OK
Check Q946 Q947
OK
Check IC927
NG
Ch
NG
NG
NG
Replace Q901
Replace IC941
Replace Q941
Replace Q946 Q947
Replace IC927
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32″ LCD TV AOC L32W432
5.2 Can not start (LED indicator yellow)
Check key board
OK
Check 5V_SB
OK
Check PWR_ON signal
Check I2C communication
OK
Check Panel inverter board
NG
NG
Return to “5.1”
NG
NG
Repair the key board
Check main board power supply and U402
Replace panel
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