AOC LC42H063D Schematic

31.5″&42″LCD TV AOC LC32(42)H063D

1

Service

Horizontal Frequency

31~68 KHz

TABLE OF CONTENTS

Description Page Description Page

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

6.1 Main Board…………..……………...…….…….......36

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

6.3 Key Board………………………..……..……….......44

6.4 IR Board………………………….……..……….......44

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

8. Block Diagram.…….................................................52

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

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

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

9.3 Key Board……………….……….…………….........68

9.4 IR Board……...………….……….…………….........69

10. Exploded View………………………………….…...70

11. BOM List……………….………………….………….74

Table of Contents.......……....................................…........1

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

Revision List…………………………………………………3

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

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

2.1 The Use of Remote Control…….…..……….…….......5

2.2 To Use the Menus….....………………….…..…….......7

2.3 How to Connect……..……………….…….……….....20

2.4 Front Panel Control Knobs…….………….……….....22

3. Input/Output Specification…………....................…....23

4. Mechanical Instructions…………………….................25

5. Repair Flow Chart ……………………….…….…….....30

6. PCB Layout ………………..…………………....….......36

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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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Revision List

Version Release Date Revision Instructions Customer Model TPV Model

A00 Jun.21,2010 Initial Release

LC32H063D

E32AAZNKW3ACXNX

E32AAZNKW3ACNNX

LC42H063D

E42AAZNKW3ACXNX

E42AAZNKW3ACNNX

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1. General Specification

Model LC32H063D/LC42H063D

Panel Size

LC32H063D: 800 mm diagonal (31.5” viewable)

LC42H063D: 1067 mm diagonal (42” viewable)

Resolution

1920 x 1080

TV System

NTSC standard

ATSC standard (8-VSB, Clear-QAM)

Channel Coverage

VHF: 2 through 13

UHF: 14 through 69

Cable TV:

Mild band (A - 8 through A - 1, A through I)

Super band (J through W)

Hyper band (AA through ZZ, AAA, BBB)

Ultra band (65 through 94, 100 through 125)

Speaker

LC32H063D: 10 W x 2

LC42H063D: 12 W x 2

Antenna Impedance

75Ω

Power Source

LC32H063D: 120V~60Hz, 150W

LC42H063D: 120V~60Hz, 220W

Standby Power Consumption

<1W

Video/Audio Terminals

Rear AV x1: S-Video/Video/Audio Input/Audio output.

S-Video Input*

Y: 1 V(p-p), 75 ohm, negative sync.

C: 0.286 V(p-p) (burst signal), 75 ohm

Video/Audio Input

VIDEO: 1 V(p-p), 75 ohm, negative sync.

AUDIO: 500mv (rms)

Component Input

Rear Component x1:

Y: 1V(p-p), 75 ohm, including sync.

Pr/Cr: ±0.35V(p-p), 75 ohm

Pb/Cb: ±0.35V(p-p), 75 ohm

AUDIO: 500mv (rms)

HDMI Terminals

HDMI INPUT: Side HDMI x4

HDCP compliant

E-EDID compliant

VGA Terminals

VGA INPUT:

Rear VGA (D-SUB 15 Pin) Input x1

E-EDID compliant

Audio Input: Mini-jack for stereo (3.5Ø )

Headphone

Audio Output: Mini-jack for stereo (3.5Ø )

SPDIF Output

Optical Digital Audio Out jack.

Size (W x H x D)

(With Base And Stand) (Mm)

LC32H063D: 778.51 x 552.20 x 250.5

LC42H063D: 1011.4 x 698.2x x 278.2

Weight

LC32H063D: 10.95Kg (with stand) / 9.35Kg (w/o stand and base)

LC42H063D: 18.8 Kg (with stand) / 16.5 Kg (w/o stand and base)

Wall Mount Size

LC32H063D: 200 x 200 mm (Wall mount kit is not included)

LC42H063D: 400 x 200 mm (Wall mount kit is not included)

Wall-Mount Accessory

Optional accessory and not included in standard package

Equipment:

Operation Temperature

Storage Temperature

35 ºC for moderate climates (Maximum ambient temperature)

-20 ºC~50 ºC

* S-Video Input

You can connect your TV set to a high-resolution video source (such as Super VHS videocassette recorder, Laser

Disc player, and DVD Home Theater Set) in order to provide maximum consumer viewing satisfaction.

Note:

Designs and specifications are subject to change without notice.

This model may not be compatible with features and/or specifications that may be added in the future.

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2. Operating Instructions

2.1 The Use of Remote Control

6

7

2.2 To Use the Menus

8

9

10

11

12

13

14

15

16

17

18

19

20

2.3 How to Connect

21

22

2.4 Front Panel Control Knobs

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3. Input/Output Specification

3.1 RGB Signal Input

15 - Pin Color Display Signal Cable

Pin No. Description Pin No. Description

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 Video Ground 14 V-Sync.

7 Green Video Ground 15 Serial Clock for DDC

8 Blue Video Ground

3.2 HDMI Digital Connector Pin Assignments

Pin No. Description Pin No. Description

1 TMDS Data2+ 2 TMDS Data2 Shield

3 TMDS Data2- 4 TMDS Data1+

5 TMDS Data1 Shield 6 TMDS Data1-

7 TMDS Data0+ 8 TMDS Data0 Shield

9 TMDS Data0- 10 TMDS Clock+

11 TMDS Clock Shield 12 TMDS Clock-

13 CEC 14 NC

15 SCL 16 SDA

17 DDC/CEC Ground 18 +5V Power

19 Hot Plug Detect

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3.3 Compatible Mode Table

Presetting PC Mode

Standard Resolution Horizontal Frequency(kHz) Vertical Frequency(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 44.772 59.855

VESA 1280 x 768 47.396 59.995

VESA 1280 x 1024 63.981 60.02

VESA 1440 x 900 55.469 59.901

VESA 1680 x 1050 65.29 59.954

VESA 1920 x 1080 67.5 60

Presetting Video Mode

Standard Resolution Horizontal Frequency(KHz) Vertical Frequency(Hz)

SD 480i 15.734 60

SD 480P 31.5 60

HD 720P 45 60

HD 1080i 33.75 60

FHD 1080p 67.5 60

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4. Mechanical Instructions

1. Remove the screws to remove the rear cover.

LC32H063D

LC42H063D

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2. Remove the screws to remove stand base.

LC32H063D

LC42H063D

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

LC32H063D

LC42H063D

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4. Remove the screws to remove bracket and separate panel and bezel.

LC32H063D

LC42H063D

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5. Remove the screws to remove key board and IR board.

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5. Repair Flow Chart

1. No power

No power (LED “Off”)

Check the AC input and

the

p

ower is “ON”?

Power “On”

Check the IR board and LED

Replace the IR board

Replace the main board

Power board output=5V?

Replace the power board

No

Yes

No

Yes

No