AOC LC32W033 Schematic

31.5″LCD TV AOC LC32W033

Service

Horizontal Frequency

31.5~50 KHz

Table of Contents

Description Page

Table of Contents………………………………………....1

Description Page

6.3. Inverter Board…..................................................41

Important Safety Notice……………………………….…2 Revision List…………………………………..…….……3

1. General Specification...............................…….......4

2. Operating Instructions..............................................5

2.1. The Front Control Panel………..............................5

2.2. Connections……………………..............................6

2.3. Remote Control...................................................7

2.4. Instructions for Use................................................9

3. Input /Output Specification..........……………........22

3.1. Input Signal Connector............……....................22

3.2. Factory Preset Display Modes….........................23

4. Mechanical Instruction…………….………….….....24

5. Repair Flow Chart................................................27

6. PCB Layout...……..............................................34

6.1. Main Board….......................................................34

6.2. Power Board…....................................................38

SAFETY NOTICE

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS

6.4. Key Board…........................................................44

6.5. IR Board………....................................................44

7. Adjustment.....….....................................................45

7.1 White Balance Adjustment…………………………45

7.2. Firmware Instructions .........................................46

7.3. DDC Instructions……..........................................50

8. Block Diagram….....................................................51

9. Schematic Diagram...……......................................53

9.1. Main Board…………............................................53

9.2. Power Board……….............................................63

9.3. Inverter Board…..................................................65

9.4. Key Board…........................................................68

9.5. IR Board…...........................................................69

10. Exploded View…..................................................70

11. BOM List………..………….……………….............72

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

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, might 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 radiations 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.)

Revision List

Version Release Date Revision Instructions TPV Model

E32A2ANSW3E6NNX

A00 Sep.30,2010 Initial Release

E32A2ANSW3E7NNX

Add new model, lead in the new power board[PCB P/N: 715G3770P03W30003S]

A01 Jan.21,2011

A02 Nov.30, 2011 Add new model E32AGANSW3E6NNX

Update as below: PCB Layout Schematic BOM

E32AGANSW3E7NNX

1. General Specification

Modelo LC32W033 Tamaño del panel Resolución Sistema de TV

Cobertura de canales

Altavoz Impedancia de Antena Fuente de alimentación Consumo de Energía en Modo Suspendido

Terminales de Video/Audio

Entrada de S-Video*

Entrada de Video/Audio

Salida de Audio

Entrada de Componentes

Terminales HDMI

Terminales VGA

Auriculares Salida SPDIF Tamaño (Ancho x Alto x Profundidad) (con base y soporte) (mm)

Peso

Tamaño del Accesorio de montaje

Accesorios de montaje

EEquipo: Temperatura de Funcionamiento Temperatura de Almacenamiento

* Entrada de S-Video

Puede conectar el televisor a una fuente de video de alta resolución (como una grabadora de cintas Super VHS, un reproductor de Laser Disc o un equipo de Teatro en casa) para ofrecer una máxima calidad de visualización para el consumidor.

Nota:

• - Los diseños y las especificaciones están sujetos a cambios sin aviso previo.

• - Este modelo podría no ser compatible con funciones y/o especificaciones que se introduzcan en el futuro.

800 mm diagonal (31.5” visibles) 1366 x 768 NTSC estándar VHF: 2 a través de 13 UHF: 14 a través de 69 Cable TV: Banda templada (A – 8 a través de A - 1, A a través de I) Super banda (J a través de W) Hiper banda (AA a través de ZZ, AAA, BBB) Ultra banda (65 a través de 94, 100 a través de 125) 8 W x 2 75Ω 100-240VAC, 50/60Hz, 150W

<1W AV trasero x1: Entrada S-Video/Video/Audio/ Salida Audio

Lateral AV x1: Entrada Video/Audio / Salida Audio Y: 1 V(p-p), 75 ohm, sinc. negativo C: 0.286 V(p-p) (señal quemada), 75 ohm VIDEO: 1 V(p-p), 75 ohm, sinc negativo. AUDIO: 500mv (rms) VIDEO: 1 V(p-p), 75 ohm, sinc negativo. Linea de salida de Audio (R/L): Max 2.0Vrms Componente trasero x2: Y: 1V (p-p), 75 ohm, incluido sinc. Pr/Cr: ±0.35V (p-p), 75 ohm Pb/Cb: ±0.35V (p-p), 75 ohm AUDIO: 500mv (rms) ENTRADA HDMI : HDMI Trasera x2; Lateral HDMI x1 Conforme a HDCP Conforme a E-EDID ENTRADA VGA: VGA trasero (D-SUB 15 Pin) Entrada x1 Conforme a E-EDID Entrada de Audio: Mini-toma para estéreo (3.5Ø) Salida de Audio: Mini-toma para estéreo (3.5Ø) Toma de Salida de Audio Óptica Digital.

778.5 x 553.3 x 250.7

10.48Kg (con soporte) 8,93 Kg (con soporte y base)

200 x200mm (el kit de montaje a la pared no está incluido) Los accesorios opcionales no están incluidos en el empaquetado

estándar

0ºC~35 ºC

-20 ºC~50 ºC

2. Operating Instructions

2.1 The Front Control Panel

1. VOL + Pulse para subir el nivel de volumen.

2. VOL - Pulse para bajar el nivel de volumen.

3. CH ▲ Pulse para seleccionar el siguiente número de programa hacia arriba.

4. CH ▼ Pulse para seleccionar el siguiente número de programa hacia abajo.

5. Menú Pulse para abrir o cerrar el menú de visualización en pantalla.

6. ENTRADA Pulse para seleccionar la fuente de entrada.

Power

Pulse para encender / apagar (reposo) el televisor.

2.2 Connections

2.3 Remote Control

* Sonido de televisión multicanal (MTS) Estándar de transmisión que permite que los sonidos estéreos se transmitan junto con la imagen de TV.

** Programa de audio secundario (SAP) Canal de audio adicional proporcionado para el estándar de transmisión de sonido de televisión multicanal (MTS). Sonido monoaural incluido en la señal grabada o de video (generalmente, contiene una traducción en un segundo idioma para el programa que se está visualizando). *** Sleep (Temporizador de apagado) Puede establecer un período de tiempo luego del que la TV se apagará de forma automática.

2.4 Instructions for Use

Encendido y apagado

Puede encender la TV a través del botón de encendido ubicado en la TV o con el control remoto.

Configuración de idioma

Switching Input Source

OSD Manual Setting

13 14 15 16 17 18 19 20 21

3. Input /Output Specification

3.1 Input Signal Connector

VGA Connector

Pin No. Description Pin No. Description

1 Red Video 9 No Pin!

2 Green Video 10 Sync Ground

3 Blue Video 11 RXD

4 TXD 12 Serial Data for DDC

5 Ground 13 H-Sync.

6 Red Ground 14 V-Sync.

7 Green Ground 15 Serial Clock for DDC

8 Blue Ground

HDMI Connector

Pin No. Description Pin No. Description

11 15

1 TMDS Data2+ 11 TMDS Clock Shield

2 TMDS Data2 Shield 12 TMDS Clock-

3 TMDS Data2- 13 CEC

4 TMDS Data1+ 14 NC

5 TMDS Data1 Shield 15 SCL

6 TMDS Data1- 16 SDA

7 TMDS Data0+ 17 DDC/CEC Ground

8 TMDS Data0 Shield 18 +5V Power

9 TMDS Data0- 19 Hot Plug Detect

10 TMDS Clock+

3.2 Factory Preset Display Modes

PC Input Signal

Presetting PC Mode

Standard Resolution Horizontal (kHz) Vertical (Hz)

VESA 640 x 480 31.469 59.94

VESA 800 x 600 37.879 60.317

VESA 1024 x 768 48.363 60.004 VESA 1280 x 720 60.000 45.000

VESA 1360 x 768 47.72 59.799

Video Input Signal

Presetting Video Mode

Standard Resolution Horizontal (kHz) Vertical (Hz)

SD 480i 15.734 60

SD 480P 31.5 60

HD 720P 45 60

HD 1080i 33.75 60

4. Mechanical Instructions

1. Remove the screws to remove the rear cover.

2. Remove the screws to remove stand base.

3. Remove the screws to remove main board, power board and inverter board.

4. Remove the screws to remove bracket.

5. Remove the screws to separate panel and bezel.

6. Remove the screws to remove key board, IR board and speakers.

5. Repair Flow Chart

1. Sin Energía

Sin Energía (LED “Apagado”)

Revise la entrada AC. ¿La energía está en “encendida”?

Salida Power board =5V?

Revise IR board y LED

Reemplace IR board

Enciéndalo

Reemplace power board

Reemplace main board

2. No Enciende

(Chequee tecla power del control remoto, si

equipo no responde significa que es anormal).

No inicia (LED naranjo)

Salida Power board＝24V？

Revise si el botón de power funciona

Revise si el receptor IR es normal

Reemplace power board

Reemplace key board

Reemplace IR board

Reemplace main board

Reemplace la Power board

3. Imagen Anormal

Entre al menú modo de fábrica para hacer

Imagen Anormal

Revise la fuente

“EEPROM initial”&“Reset”

Reinicie la fuente

Revise main board

Revise el cable LVDS

Revise el panel

Reemplace panel

Reemplace main board

Reemplace LVDS cable

4. Sin Imagen

Revise si el TV funciona, si enciende/apaga vía control remoto y botón de power.

Revise cable LVDS

Panel Vcc = 12V?

Sin imagen (LED verde)

Revise si la luz del panel está

encendida= “On”

Vuelva a insertar o Reemplace el cable LVDS

Reemplace main board

Revise señal L/P si

está disponible

Salida de Power board＝24 V？

Reemplace main board

Reemplace the Panel

Reemplace main board

Reemplace Panel

Reemplace power board

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