AOC L22W631 Schematic

22’’ LCD TV AOC L22W631

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

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

Revision List.….... ................... .................……...... 3

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

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

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

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

2.2. To Use The Menu…...…………………….……….......6

2.3. How To Connect…….…………………….……….....10

2.4. Front Panel Control Knobs……………….……….....12

3. Input/Output Specification…………....................…....13

4. Mechanical Instructions…………………….................16

5. Repair Flow Chart ……………………….…….…….....19

6. PCB Layout ………………..………………....….......25

6.1.Main Board…… … …. . …… … … .… …….......25

6.2.Power Board……………..………….……….......28

6.3.Tuner Board……………………..………..............30

6.4. IR Board………………………………..……….......30

7. White-Balance, Luminance Adjustment...................31

8. Block Diagram.……...........................................33

9. Schematic……………...…………..………………...34

9.1 Main Board…….…………..……………….….......34

9.2.Power Board…………….……….………….......46

9.3.Tuner Board……………………..………..............48

9.4.Key Board……………………..………..............52

10. Exploded View..……………............................…..53

11. BOM List……………….………………………….….54

12.Different Parts List…………………………………..73

Service

Service

Service

Horizontal Frequency

31.5-80 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.

1

22’’ LCD TV AOC L22W631

Version

Release Date

Revision Instructions

TPV Model

A00

Sep.-06-2007

Initial Release

E227ANNS2WAENN

A01

Nov.-06-2007

Add new model

E227ANNK2WA5NN

A02

Dec.-11-2007

Lead in CKD model for Brazil

E227ANNS2WAE3N

Revision List

2

22’’ LCD TV AOC L22W631

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.)

3

22’’ LCD TV AOC L22W631

Items

Specification

LCD Panel

Panel Type

M220EW01 V0A panel

Driving system

TFT-LCD AUO Panel

Aspect Ratio

16:10

Resolutions

1680 x1050

Pixel Pitch

0.282mm x0.282mm

Display colors

16.7 million

Color Temperature

Cool / Warm/normal

TV Function
TV Standard

NTSC-M , PAL-M, PAL-N

Sound System

STEREO

Closed Caption / V-chip For USA

Video Inputs
AV

RCA x 1

Audio L/R x 1

S-Video

S-Video x 1

Audio L/R x 1

COMPONENT

Y,Cb,Cr x 1

Audio channel L / Rx 1

Audio Output

Audio Output: L / R
Speaker (built-in): Two 5W speakers

Headphone Mini-jack for stereo (3.5ø)

OSD language

English, etc

Wall Mount

VESA 100 mm x 100 mm

Power
Power Supply

AC100V~240V, 50/60Hz

Power Consumption

≤75W

Standby

<1W

Environment
Operating

+ 0 °C ~ + 40 °C

Storage

- 25 °C ~ + 60 °C

Operating

10% ~ 85%

Dimension

W x H x D (with stand)

539 x 447x 216 (mm)

Net weight

Without accessory

6.7 Kg

Accessory

Remote controller, Battery, Power cord, Signal Cable,
Audio Cable, User manual

1. General Specification

4

22’’ LCD TV AOC L22W631

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. You
can directly input number key
in sequence to select any
channel.

CH

Press or to browse
through the TV channels,
which are not Skip. 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
Press for PC mode

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
5,10,15,30,45,60,90,120 ,
180,240 minutes or off.

PIP
Not Supported.

POP

Not Supported.

MUTE

Temporarily interrupt the
sound or restore it.

DISPLAY

Press this button to display
source information on the
left-top corner. TV mode, will
show Channel number

MTS /SAP

Press to activate
Multichannel Television
Sound, Stereo or Mono
sound.

PRE-CH

Press to display the
previously selected TV
channel.

TV/VIDEO

Select your input source:
press repeatedly to select TV,

AV, S-VIDEO, Component
or PC,HDMI.

CAPTION

Press to select Closed
Caption channel or turn it off

Up & Down

Press these keys to move
up, down in the on-screen
menus. When the
on-screen menu is closed,
press it to change program
number

Left & Right

Press Left and Right, we can
Change the Setting of
submenu. When the
on-screen menu is closed,
press it to adjust volume.

SWAP

Not supported

V-CHIP

Turn on or off Child lock
function.

Size

Switch between Normal,
Wide1, wide2, zoom or
Cinema.

2. Operating Instructions

2.1 The Use of Remote Control

5

22’’ LCD TV AOC L22W631

MAIN MENU

2.2 To Use the Menus

1. Press the MENU button to display or close main menu.

2. Use the 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 to enter the main OSD (On Screen Display). Adjust the items including Audio setup, Video
setup, V-Chip setup, Function setup and TV setup. When the input source is VGA ,HDMI ,AV, S-VIDEO or
Component mode, only the Audio setup, Video setup and Function setup can be selected;

When the input source is TV mode, the Audio Setup, Video Setup, V-chip Setup, Function Setup and TV Setup can
be selected.

Audio Setup (Same as in VGA, TV, AV , S-Video, HDMI and Components mode)

1. The range of Volume, Bass and Treble is 0~100.

2. The range of Balance is -50~+50. Adjusted from 0 to -50, the sound from the right track fades until silent.
Adjusted from 0 to +50, the sound from the left track fades until silent.

3. Preset: Select audio preset mode according to your preference. You can select Personal, Voice, Music and
Theatre mode.

4. Equalizer: You can select and adjust 100, 300, 1K, 3K and 8K respectively (the figures represent the sound
frequency range).

6

22’’ LCD TV AOC L22W631

5. Reset to default: Reset the audio setting to the factory default value.

Video setup
When the input source is in VGA mode, you can select Brightness, Contrast, Position, Video noise, Sharpness,
Auto adjust, Information, Color Temp. and Reset to default .

1. Brightness and Contrast: The range can be adjusted from 0~100.

2. Position: There are two options, Horizontal and Vertical, could adjust from -50 to +50 to adjust picture position on

screen.

3. Video noise: There are two options, Phase and Clock, could adjust from -50 to +50.

4. Sharpness: Select from five options of Normal, Softest, Soft, Sharp and Sharpest.

5. Auto adjust: Automatically adjust PC input to the optimal screen size.

6. Information: Prompt the current size for PC input definition

7. Color Temp.: There are five options of color temperature provided for users –SRGB, Normal, Cool, Warm and

User. You can select the four-color temperatures of SRGB, Normal, Cool and warm or manually adjust red, green
or blue in the user setting (you can only adjust red, green and blue in the user color).

8. Reset to default: Reset the video setting to the factory default value.

When the input source is in HDMI mode, you can select Brightness, Contrast, Sharpness, Information, Color
Temp, and Reset to default.

7

22’’ LCD TV AOC L22W631

Information: It shows the solution of signal input.
Others are same to VGA mode.
When the input source is in TV/AV/S-Video/Component mode, you can select Brightness, Contrast, Color,

Sharpness, Tint, Dyn. skin tone, Color Temp, Preset, Size and Reset to default.

1. Brightness and Contrast: The range can be adjusted from 0~100.

2. Color: Could adjust from 0 to 100 to adjust the color saturation of picture.

3. Sharpness: Select from five options of Normal, Softest, Soft, Sharp and Sharpest.

4. Tint: Could adjust from 0 to 100 to adjust the color of picture.

5. Dyn. Skin tone: When the Dynamic skin tone is ON, the skin tone of person in the picture will be more vivid.

6. Color Temp.: There are three options of color temperature provided for users –Normal, Cool and Warm.

7. Preset: Select video preset mode according to your preference. You can select Personal, Movie, Sport Weak

signal and Game.

8. Size: There are five options –Normal, Wide 1, Wide 2, Zoom and Cinema.

9. Reset to default: Reset the video setting to the factory default value.

Function Setup

When the input source is in all mode, you can select Set time, Language , Sleep time and Reset to default ,But CC
and CC Preset just only for AV/S-Video/TV mode

8

22’’ LCD TV AOC L22W631

1. Set time: You can set clock with up/down key. After pulling out power cord, clock will be called back to 12:00 AM.

You should set again when you plug power cord.

2. Language: Three languages provided - English, Portuguese and Spanish.

3. Sleep timer: Set the sleeping timer and the alert function, which will indicate the time left. You can set as

5,10,15,30,45,60,90,120,180,240 Min or off

4. CC: Set Close caption function on or off

5. CC Preset: Set Close caption channel. You can select CC1~CC4,TT1~TT4.

6. Reset to default: Reset the function setting to the factory default value.

TV Setup

The following menu appears only in the TV mode.

1. Program no.: Shows the current channel number. You can change program no with left/right key of remote

control.

2. Tuning mode: Select the mode of TV signal –Cable

3. TV System: There are four options as NTSC-M, Auto, PAL-M and PAL-N. Recommend set it to auto.

4. Auto search: Select "Auto Search" to search all signaled channel; when the search is complete, it stays at the

first channel with signal and all channels that have been located are stored. If you would like to stop "Auto
Search" during the process, press the Menu button.

5. Fine Tuning: Fine Tune frequency of current program.

6. AFC: AFC can be set to ON or OFF. When it is set to ON, the TV will search the TV signal automatically. When

there is any offset in the signal, it will automatically adjust the channel to the correct position.

7. Skip: can be set to ON or OFF. When it is set to ON, the channel without signal can be skipped by pressing the

up/down button on the remote control or on the front panel.

8. Reset to default: Reset the TV setting to the factory default value.

9

22’’ LCD TV AOC L22W631

2.3 How to Connect

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. AC power input terminal

2. VGA audio input

3. VGA signal input

4. AV signal input

5. Right audio track input (AV/S-Video)

6. Component left audio track input

7. Component right audio track input

8. TV input

9. Headphone outlet

10~12. Component signal input(Y, Pb, Pr)

13. Left audio track input (AV/S-Video)

14. S-Video signal input

15. HDMI input

Video recorder

How to connect

1. Connect the supplied antenna cable to the RF IN port of your VCR.

2. Connect another FR cable from the port of your VCR to the antenna port of you TV set. If you have connected the

video/audio cable to the video AV port, you may have better sound and picture when playing the VCR .

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.
S-Video does not provide audio, audio cables must still be connected to provide sound (AV and S terminal share
one audio input).

Watching VCR

1. If you use connection TV, select the TV channel auto search.

2. If you use connection AV, select video AV input.

3. Insert videotape in the VCR and press the PLAY button.

10

22’’ LCD TV AOC L22W631

DVD Player

How to connect

1. Connect 3 separate components signal cables to the Y, Pb and Pr ports of the component signal of the DVD

player, and the Y, Pb and Pr ports of the component signal of theTV set.

2. Connect the audio cable to the audio output port of the DVD player and the audio input port of the component

signal of the TV set.

How to use

1. Select Component mode.

2. Turn on the DVD set.

Camera camcorder video game set….

How to connect

1. Connect the camera, camcorder and game set to the ports of the audio/video set.

2. The camcorder may get better picture by connecting a S-Video cable between the equipment and the TV set.

How to use it

1. Select the video AV or S-Video input.

2. Enable the exterior AV equipment.

Digital set top box

Connect the top box to the input port of the component signal.
How to connect

1. Connect 3 separate component signal cables to the Y, Pb and Pr ports of the component signal of the Digital TV/
Top Box, and the Y, Pb and Pr ports of the component signal of theTV set.

2. Connect the audio cable with the audio port of the Digital TV/Top Box and the audio port of the TV set.

How to use

1. Select Component.

2. Turn on the DVD set-Top box set.

Headphone

1. The headphone jack is located at the rear corner of the TV.

2. The MUTE key on the remote control works on both internal speaker and the headphone.

3. Use volume key to adjust the volume.

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22’’ LCD TV AOC L22W631

2.4 Front Panel Control Knobs

VOL : Press to confirm your function selection (when the OSD main menu displayed) or adjust volume (without

OSD main menu)

CH : Select the intended function by pressing the two keys (when the OSD main menu displayed), or switch

the channels in the TV mode (without OSD main menu)

MENU : Press to show the OSD menu and exit OSD menu at the TV mode
INPUT: Press to select your input source.
POWER: Press to turn on or off the TV.

12

22’’ LCD TV AOC L22W631

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

TUNER SIGNAL

Channel Coverage

NTSC ，PAL M/N

Tuner

ChangHong

TAF5-U2F41RW

VHF Low band

IC1(55.25MHz) ～S6(127.25MHz)CH

VHF High band

S7(133.25MHz) ～ S36(361.25MHz)CH

UHF band

S37(367.25MHz)～ C57(801.25MHz)CH

IF Frequency

Picture carrier

Sound carrier

42.17 MHz

41.25 MHz

Stereo/Bilingual

BTSC / SAP

Impedance

: 75 ohm terminated

LEVEL

: 70dBuV

3. Input/Output Specification

3.1 RGB Signal input

15 - Pin Color Display Signal Cable

3.2 RF HDTV Signal input

13

22’’ LCD TV AOC L22W631

AV

(Composite Video)

Video system

PAL / NTSC-M

Amplitude

1.0Vpp (including sync)

Impedance

75 ohm terminated

S-Video

Video system

PAL/ NTSC-M

Y signal amplitude

1.0Vpp (including sync)

C signal amplitude

0.286Vpp

Impedance

75 ohm terminated

Component Video

Video System

DTV

480i, 480p, 576i,576p,720p, 1080i

Y signal amplitude

1.0Vpp (including sync)

Pr/ Pb signal amplitude

0.7Vpp

Impedance

75 ohm terminated

HDMI

( EIA/CEA-861B )

Output Formats

H/V Frequency

HZ

Resolution

Component

1.

480 I (SDTV)

15.734K / 60

720 - 240

2.

480 P(SDTV)

31.469K / 60

720 - 480

3.

576 I(SDTV)

15.625K / 50

720 - 288

4.

576 P(SDTV)

31.250K / 50

720 - 576

5.

1080I /60 (HDTV)

33.750K / 60

1920 - 1080

6.

1080I /50 (HDTV)

28.125K / 50

1920 - 1080

7.

720P /60 (HDTV)

45.00 K / 60

1280 - 720

8.

720P /50 (HDTV)

37.50 K / 50

1280 - 720

3.3 AV/S-Video/Component Video Inputs

3.4 HDMI Inputs

14

22’’ LCD TV AOC L22W631

Item

Video Mode

fH

(kHz)

fV

(Hz)

Dot
clock
(MHz

)

Sync

polarity

Horizontal (dot)

Vertical (line)

Ana

log

H

V

H-tot

al

H-wi

de

H

Back

porch

H
Front
porch

V-to

tal

V-wid

e

H

Back

porch

H
Front
porch

1

VESA

VGA 640x480

31.46

9

59.94

0

25.17

5

N N 800

96

48

16

526 2 33

11 Y 2

37.86

1

72.80

9

31.50

0

N N 832

40

128

24

520 3 28 9 Y

3

37.50

0

75.00

0

31.50

0

N N 840

64

120

16

500 3 16 1 Y

4

SVGA 800x600

35.15

6

56.25

0

36.00

0

P P 1024

72

128

24

625 2 22 1 Y

5

37.87

9

60.31

7

40.00

0

P P 1056

128

88

40

628 4 23 1 Y

6

48.07

7

72.18

8

50.00

0

P P 1040

120

64

56

666 6 23

37 Y 7

46.87

5

75.00

0

49.50

0

P P 1056

80

160

16

625 3 21 1 Y

8

XGA 1024x768

48.36

3

60.00

4

65.00

0

N N 1344

136

160

24

806 6 29 3 Y

9

56.47

6

70.06

9

75.00

0

N N 1328

136

144

24

806 6 29 3 Y

10

60.02

3

75.02

9

78.75

0

P P 1312

96

176

16

800 3 28 1 Y

11

SXG

A

1152x864

67.50

0

75.00

0

108.0

00

P P 1600

128

256

64

900 3 32 1 Y

12

1280x102

4

63.98

1

60.02

0

108.0

00

P P 1688

112

248

48

106

6

3

38 1 Y

13

79.97

6

75.02

5

135.0

00

P P 1688

144

248

16

106

6

3

38 1 Y

14

VGA

TEXT

720x400

31.46

9

70.08

7

28.32

2

N P 900

108

45

27

449 2 35

12 Y 15

Macin

tosh

640x480

35.00

0

66.66

7

30.24

0

N N 864

64

96

64

525 3 39 3 Y

16

832x624

49.72

5

74.50

0

57.28

3

N N 1152

64

224

32

667 3 39 1 Y

17

1024x768

60.15

0

74.72

0

80.00

0

N N 1330

96

168

42

805 3 31 3 Y

18 1280x768

47.77

6

59.87

0

79.50

0

N P 1664

128

192

64

798 7 20 3 Y

19 1280x960

60.00

0

60.00

0

108.0

00

P P 1800

112

312

96

100

0

3

36 1 Y

20 1440x900

55.93

5

59.88

7

106.5

N P 1904

152

232

80

934 6 25 3 Y

3.5 Compatible Mode Table

15

22’’ LCD TV AOC L22W631

4. Mechanical Instructions

1. Remove the 4 screws to remove the base.

2. Remove the 5 screws to remove the rear cover.

3. Remove the AC cover.

16

22’’ LCD TV AOC L22W631

4. Remove the shield.

5. Remove the main board, power board.

17

22’’ LCD TV AOC L22W631

6. Remove the key board & IR board & speaker.

7. Relax the clips to remove the bezel.

18

22’’ LCD TV AOC L22W631

Check CN902 Pin 1/2 = 12V

Check AC line volt 110V or 220V

Check AC input

Check the voltage of C905 (+)

Check bridge rectified circuit and F901 circuit

Check start voltage for the pin 8 of IC901

Check R904, R932, R933 or Change IC901

Check the auxiliary voltage is bigger than
10V and smaller than 20V

1) Check IC901, T901

2) Check C908, D902 circuit

OK

OK

NG

Check

Check IC901 pin 6 PWM wave

OK

Check IC901, Q901

NG

NG

NG

OK

NG

NG

OK

5. Repair Flow Chart

1. No Power (No LED indicator)

19

22’’ LCD TV AOC L22W631

Check CN801~CN804 connected ok?

Please connect them ok.

Check PT801/PT802 output circuit.

Check CN902 PIN3/4=5V&PIN1/2=12V?

Return “1”

NG

OK

Check IC801 PIN5=5V?

OK

Check IC801 pin11/pin12/pin19/pin20
output is PWM?

Check PT801/PT802 output voltage is
OK?

Check and Debug IC801 fail or the circuit
around IC801

NG

NG

Check and Debug IC801 output circuit.

OK

Check and Debug Q804/Q802/Q803 circuit

NG

NG

OK

OK

2. Can not start (LED indicator green)

20

22’’ LCD TV AOC L22W631

Replace the key board or IR board

Check U402

Replace U402

Check I2C communication

Check key board and IR board

Repalce I2C communication component

No display

OK

NG

OK

OK

NG

NG

Check main board power supply

OK

3. No display (LED indicator yellow)

21

22’’ LCD TV AOC L22W631

check TV

system

Check the source

Reset source

Check signal filter circuit

Replace the filter or inductance

IF

signal
check TU100

AV, S-video Comp signal

check LVDS cable

Check input

replace LVDS cable

check panel

replace panel

NG

OK

NG

OK

OK

NG

replace TU100

NG

Readjust

system

OK

Check U203,U204

NG

Replace U203 or

U204

Check U201

OK

NG

Replace U201

Check U107

NG

Replace U107

OK

PC，Comp signal

Check U401

OK

OK

NG

Replace U401

NG

OK

NG

4. Abnormal display

22

22’’ LCD TV AOC L22W631

Check the source

Reset source

NG
OK

Check input signal

HDMI

Check U306

NG

Replace U306

TV

Check TV

system

readjust

NG

Check TU100，

U204

NG

Replace TU100 or

U204

Check U201

OK

OK

OK

Replace U201

NG

Check U601

OK

NG

Replace U601

Check speaker

NG

Replace speaker

Check MUTE

Close MUTE

NG
OK

5. No sound

23

22’’ LCD TV AOC L22W631

OSD is unstable or not working

Is Key Pad Board connecting normally?

Connect Key Pad Board

Is Button Switch normally?

Replace Button Switch

Y

Is Key Pad Board Normally?

Replace Key Pad Board

Check Main Board

N N Y Y N

6. Key Board

24

22’’ LCD TV AOC L22W631

6. PCB Layout

6.1 Main Board

25

22’’ LCD TV AOC L22W631

26

22’’ LCD TV AOC L22W631

27

22’’ LCD TV AOC L22W631

6.2 Power Board

28

22’’ LCD TV AOC L22W631

29