AOC D32W831, D42H831, D47H831 Diagram

32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

Service

Horizontal Frequency

32”:31~60 kHz

42”/47”:31~65 kHz

TABLE OF CONTENTS

Description Page Description Page

Table Of Contents.......……..............................…........1

Important Safety Notice.......................................……......2

Revision List…………………………………………………3

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

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

2.1. Remote Control………………….….……….…….......5

2.2. Control Buttons and Connections…...………………..6

2.3. Use the Menus….…….…………………….……….....9

2.4. Front Panel Control Knobs……………….……….....10

3. Input/Output Specification…………....................…....11

4. Mechanical Instructions…………………….................13

5. Repair Flow Chart ……………………….…….…….....16

6. PCB Layout ………………..………………....….......21

6.1.Main Board…………....…..……………...……….......21

6.2.Power Board……..…..………..………….……….......24

SAFETY NOTICE

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

6.3.Tuner Board…………….……………………….......26

6.4.Key Board………………………….…………….......26

6.5.IR Board………………………….…………..….......26

7.Adjustment…………………………….…...................27

8. Block Diagram.…….................................................28

9. Schematic……………...……………………………...47

9.1.Main Board……...…………………………...….......47

9.2.Power Board….….….….…………...………….......57

9.3.Tuner Board…….……………………………….......62

9.4.Key Board………………………………….…….......70

9.5.IR Board……..…………………..….……….….......71

10.Exploded View…….…………………………….…...72

11.BOM List……………..….…………………………….75

12.Different Parts List…………………..……………186

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″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

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.)

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

Revision List

Version Release Date Revision Histoty Customer Model TPV Model

A00 Sep.-12-2008 Initial Release

D32W831

D42H831 E42RMNNSW8AE6N

D47H831 E47RMNNSW8A2NN

E32RMNNSW8AE2N E32RMNNSW8AE6N

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

1. General Specification

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

2. Operating Instructions

2.1 Remote Control

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

2.2 Control Buttons and Connections

Control Buttons

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

Connections

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

2.3 Use the Menus

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

3. Input/Output Specification

3.1 Connectors

CONNECTORS AC Power IEC : 3 Pin Cord The display shall support an IEC C-13/C-14 (Standard) type male power receptacle for connection to mains power.

AV Video

S-video

Component

Analog RGB

Pin – Assignment of 15-pin D-sub:

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 H-Sync. 6 Red Ground 14 V-Sync. 7 Green Ground 15 Serial Clock for DDC 8 Blue Ground

Digital RGB

Composite Input Connector

S-video Input Connector

HD Component YPbPr RCA Video Input (480i, 480P, 720P, 1080i) Connectors

SPDIF output test(the black port)

: Rear side / Data Cable : 15-pin D-sub female

:Rear side/Data Cable : HDMI Video Input Connector

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″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

3.2 Input Signal Timing

Analog RGB Input Signal Timing

Horizontal Vertical Sync Polarity

Presence

Screen Mode Remark

Dots ×Lines

720×400 31.47 70.00

640×480 31.47 59.94

640×480 37.50 75.00

640×480 37.86 72.81

800×600 37.88 60.32

800×600 46.88 75.00

800×600 48.08 72.19

1024×768 48.40 60.00

1360×768 47.70 60.00

1440×900 55.94 60.00

Frequency Frequency Normal FULL

(kHz) (Hz)

Horizontal Vertical Horizontal Vertical

(4:3) (16:9)

NEG POS YES YES YES YES

NEG NEG YES YES YES YES

POS POS YES YES YES YES

NEG NEG YES YES YES YES

POS POS YES YES YES YES

NEG POS YES YES YES YES

HDMI Input Signal Timing

VESA MODES

Nominal

Mode Resolution Total

720P 1280×720P 45.00 60 74.25

Frequency

Horizontal Vertical

(KHz)

Sync Polarity

Nominal

Freq.

(Hz)

Sync

Polarity

Only for

42” and 47”

Nominal

Pixel Clock (MHz)

1080i 1920X1080i 33.75 60 74.25

480P 720X480P 31.54 60 27.00

480i 720X480i 15.75 60 13.51

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

4. Mechanical Instructions

4.1 D32W831

1. Remove the base as figure 1.

Figure 1

2. Remove the rear cover as figure 2.

Figure 2

3. Remove the main board, power board and tuner board figure 3.

Figure 3

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

4. Remove the screws to remove the BKT-BASE-SUPPORT BKT-PCB-HOLDER(TOP and BTM) as figure 4.

5. Remove the key board and IR board as figure 5.

Figure 4

Figure 5

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

6. Remove the panel support as figure 6.

Figure 6

7. Remove the panel as figure 7.

8. The end.

Figure 7

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

4.2 D42H831

1. Remove the base as figure 1.

Figure 1

2. Remove the rear cover as figure 2.

Figure 2

3. Remove the main board, power board,tuner board and key board as figure 3.

Figure 3

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

4. Remove the IR board as figure 4.

Figure 4

5. Remove the BKT_VESA(big) and BKT_FIX(small) as figure 5.

6. Remove the BKT-PCB as figure 6.

Figure 5

Figure 6

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

7. Remove the panel BKT as figure 7.

.

Figure 7

8. The end.

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

4.3 D47H831

1. Remove the base as figure 1.

Figure 1

2. Remove the rear cover as figure 2.

Figure 2

3. Remove the main board, power board,tuner board and key board as figure 3.

Figure 3

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32″&42″&47″ Digital LCD TV AOC D32W831&D42H831&D47H831

4. Remove the IR board as figure 4.

Figure 4

5. Remove the BKT_FIX as figure 5.

6. Remove the BKT_VESA as figure 6.

Figure 5

Figure 6

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32″&42″&47″Digital LCD TV AOC D32W831&D42H831&D47H831

7. Remove the BKT_panel as figure 7.

8. The end.

Figure 7

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