AOC L32W961 Schematic

32″LCD TV AOC L32W961

Service

Horizontal Frequency

31.5~60 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 The Use of Remote Control…….…..……….…….......5

2.2 To Use the Menu….....…………………….……….......6

2.3 How to Connect……..……………….…….……….....11

2.4 Front Panel Control Knobs…….………….……….....17

3.Input/Output Specification…………....................…....19

4.Mechanical Instructions…………………….................21

5.Repair Flow Chart ……………………….…….…….....24

6.PCB Layout ………………..…………………....….......31

SAFETY NOTICE

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

6.1 Main Board…………..……………...…….…….....31

6.2 Power Board…………………….…….…………....35

6.3 Key Board………………………..……..………......46

6.4 IR Board………………………….……..………......46

7.Adjustment……..…………………………................47

8.Block Diagram.……...............................................50

9.Schematic Diagram...…………....…………………..51

9.1 Main Board………….……….………………...…....51

9.2 Power Board………..…..….….……...……..……...75

9.3 Key Board……….……….……….……………......85

9.4 IR Board……...………….……….…………….......86

10.Exploded View……………………………………....87

11.BOM List……………….………………….………….88

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

32″LCD TV AOC L32W961

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.)

32″LCD TV AOC L32W961

Revision List

Note: Check updating contents, please input keywords in the “Find box” of PDF and click “OK”. After that, it will automatically locate to the updating contents.

Version Release Date Revision Instructions TPV Model

A00 Jun.23,2009 Initial Release E329AZNK4WAENN

Add new models, lead in the new power board

A01 Jan.19,2009

A02 Sep.2,2010 Add new inverter board E329MZNK4WE6NN

A03 Dec.08,2010

A04 Dec.27,2010

A05 May.13,2011 Add new model E32A2ZNK4WE55N

[PCB P/N: 715G3332 1(adapter) and 715G3333 1(inverter)]

Add new models and lead in new main board (715G3269M01001005K) and power board (715G3652P02000003S/ 715G3811P01W30003S) Update are as below:

Repair Flow Chart PCB Layout Main & Power Board Schematic Diagram BOM List

Add new models, lead in the new power board[PCB P/N:

715G3770P03W30003S]

Update as below:

PCB Layout Schematic BOM

E329MZNK4WM55N

E32RMZNK4WA52N

E32A2ZNK4WE65N

E32A2ZNK4WE6NN

E32AGZNK4WE6NN

32″LCD TV AOC L32W961

1. General Specification

32″LCD TV AOC L32W961

2. Operating Instructions

2.1 The Use of Remote Control

32″LCD TV AOC L32W961

2.2 To Use the Menus

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

2. Use the Navigation Ring to move around to select, adjust or confirm an item in the OSD (On Screen Display) menu.

Press the MENU/EXIT button to enter the main OSD. Adjust the items including Video menu, Audio menu, Feature menu, Channel menu and VGA menu. However, some function items in the menus may only be enabled

in the particular source modes.

Channel Menu

The Channel menu in TV mode shows as below.

1. Tuning Band: Select TV source signal from the Air (antenna) or Cable (CATV).

2. Channel Strength: Show the intensity of the received DTV signal.

3. Auto CH Search: Automatically scan all NTSC / ATSC TV channels and then store in the channel table. In channel scan process, the OSD can display the number of channels which had been found.

4. Add on CH search: Add channels which are new found.

5. Channels List: Show the channel List. User can edit (add/delete) the channel numbers.

6. Channel Labels: Show the NTSC / ATSC TV channel label menu for user modifying channel labels specifically.

7. FAV Channel Setting: Show the Favorite Channel List. User can edit (add/delete) the favorite channels.

Video Menu

The Video menu in most source modes shows as below. It provides several video adjustment items for user fine tuning the video display. Only in VGA source mode, the Video menu simply provides Picture Mode, Color Temp, Backlight, Aspect Ratio and Preset items.

32″LCD TV AOC L32W961

1. Picture Mode: Adjust the best picture appearance from selecting the preset value of Vivid, Standard, PWR(Energy savings), Theater, Sport, or Custom.

2. Brightness: Video brightness adjustment, the tuning range is 0 ~ 100.

3. Contrast: Video contrast adjustment, the tuning range is 0 ~ 100.

4. Sharpness: Video sharpness adjustment, the tuning range is 0 ~ 100.

5. Color: Video color chroma adjustment, the tuning range is 0 ~ 100.

6. Tint: Video tint adjustment, the tuning range is R50 ~ G50.

7. Color Temp: Three color temperature modes. (Normal / Warm / Cool)

8. Backlight: Backlight strength adjustment, the tuning range is 0 ~ 30.

9. Aspect Ratio: Choose the display aspect: Auto, Normal, Zoom, Wide, or Cinema mode. (Auto: TV only)

10. Preset: Restore the default video settings.

Audio Menu The Audio menu in TV mode shows as below. It provides audio adjustment for user to modify the audio setting.

Audio language setting is only available with ATSC TV source, the option is disable under other source modes.

1. Sound Mode: Choose the sound mode: Standard, Movie, News, or Custom.

2. Bass: Bass tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled)

3. Treble: Treble tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled)

4. Balance: Audio balance adjustment, the tuning range is L50 ~ R50.

5. Audio Source: Select the audio source from Mono, Stereo, or SAP. (This function works in ATV only).

6. Audio Language: Change the audio language setting on ATSC TV programs. The number of the supported audio languages depends on the ATSC TV programs. (English / Français / Español)

7. SPDIF: Digital audio output format. Select from RAW and PCM.

8. Speaker: Choose to turn on / off the TV internal speaker. The digital audio output signals and earphone output signals will not be turned off even though the TV speaker is off. The default setting is On.

9. AVL: Choose On or off to adjust volume to be consistent across programs and channels automatically.

10. Preset: Restore the default audio settings.

Feature Menu

The Feature menu in TV mode shows as below. This menu gives users the most flexibilities to satisfy their generally demands. According to the various requirements in different source modes, certain features should be hidden (disable) on the menu. The details footnotes will be described clearly below.

32″LCD TV AOC L32W961

1. Menu Language: Select the menu display language. (English / Français / Español)

2. Time: Set current time. The sub-menu includes Time Mode, Time Zone and Daylight Savings.

[Time Mode] – Choose from Auto or Manual. [Time Zone] – Set current time zone. [Daylight Savings] – Set to On or Off.

3. Advanced Video: Provide the Noise Reduction, Adaptive Contrast, and DCR for enhancing video quality. [Noise Reduction] – Gives four NR effect degrees, such as: Low, Mid, High and Off. The default setting is Mid.

[Adaptive Contrast] – Choose On or off to adjust the gamma after analyzing the input signal automatically.

[DCR] – Dynamic Contrast Ratio (DCR) auto adjusts the backlight of the screen.

[Preset] – Restore the default advanced video option settings.

4. Transparency: Adjust the transparency of the on-screen menu from range 1 to 10.

5. Password Setting: Change the 4-numeral parental control password. Three steps are required for changing the

password: Enter Old Password -> Enter New Password -> Confirm New Password. Note: This item is only available in TV, Composite and S-Video source modes. The default password is 『0 0 0 0』.

32″LCD TV AOC L32W961

6. Parental Control: provide the parental Control (V-chip) function setting. Before entering the Parental Control

sub-menu, user has to key in the password first. Enter the Parental Locks item, then the user can modify the restricted table about MPAA or TV Rating respectively. While exiting the sub-menu, the parental control function is working. The inhibitive channels or source signals can be un-lock through pressing the V-CHIP key on the remote control and then key in the correct password. Note: This feature is only available in TV, Composite and S-Video source modes. (The default password is: 0 0 0 0.)

[Button Lock] – Select On or Off to lock or unlock the control buttons on the side panel of the TV. When this

function enables, the control buttons on your TV will be locked and TV will be controlled by remote control only.

[Block Unrated TV] – When Block Unrated TV is set to on, your TV will block unrated program.

[USA Parental Locks] – Set the parental control level by MPAA or TV Rating.

[Canadian Parental Locks] – Set the parental control level by English Rating or French Rating.

[Open V-Chip] – Open V-Chip is an advanced V-Chip rating system for digital channels that are received.

The rating table will be updated by downloading the RRT5 data for blocking.

32″LCD TV AOC L32W961

7. Closed Captions: Select a closed caption options. (Off /On / With Mute)

8. Analog Captions: Select an analog caption options. (CC 1-4 / TEXT 1-4)

9. Digital Captions: Select a digital caption options. (SERVICE 1-6)

10. Digital Captions Setup: Provide numerous options for setting the digital closed caption style in the sub-menu. [Style] – Set to Automatic or Custom mode. If Custom mode is selected, user can modify the detail styles

described below. The setting result will be shown immediately on the bottom of the sub-menu OSD. Note: This feature is only available in Digital TV (ATSC) mode.

[Size] – Digital closed caption font size, which can be set as Automatic, Small, Normal or Large. [Font] – Digital closed caption font style, which can be chosen as Automatic, Default or Font 1 ~ 7. [Text Color] – Automatic / White / Red / Green / Blue / Yellow / Magenta / Cyan / Black [Text Opacity] – Automatic / Solid / Flashing / Transparent / Translucent [Background Color] – Automatic / Black / White/ Red / Green / Blue/ Yellow / Magenta / Cyan [Background Opacity] – Automatic / Solid / Flashing / Transparent / Translucent [Edge Effect] – Automatic / None / Raised / Depressed / Uniform / Left Shadow / Right Shadow [Edge Color] – Automatic / Red / Green / Blue / Yellow / Magenta / Cyan / Black / White.

11. Input Labels: User can edit the input labels.

12. Component Setting: This option only shows and is available in component mode, which provides fine tuning

component display.

[Phase] – Adjust Picture Phase to reduce Horizontal-Line noise. The tuning range is from 0 to 100. [Preset] – Restore the default component setting values.

13. Reset to Default: Restore all the default settings.

VGA Menu

This option only shows and is available in VGA mode, which provides several items for the VGA display fine tuning.

1. H-Position: Adjust the horizontal position of the picture. (0-100)

2. V-Position: Adjust the vertical position of the picture. (0-100)

3. Clock: Adjust picture clock to reduce Vertical-Line noise. (0-100)

4. Phase: Adjust Picture Phase to reduce Horizontal-Line noise. (0-100)

5. Auto Adjust: Adjust the settings automatically.

6. Preset: Restore the default VGA setting values.

32″LCD TV AOC L32W961

2.3 How to Connect

Connecting Equipment

Coaxial (RF)

Using Your Antenna or Digital Cable for DTV

1. Turn off the the HDTV.

2. Connect the coaxial (RF) connector from your antenna or digital cable (out-of-the-wall, not from the Cable Box) to

the TV connector.

3. Turn on the HDTV.

4. Select TV using the SOURCE button on the remote, side of the HDTV or directly by pressing the TV button on the

Remote Control.

Using Your Antenna or Cable for DTV

1. Turn off the the HDTV.

2. Connect the coaxial (RF) connector from your antenna or cable (out-of-the-wall, not from the Cable Box) to the TV

connector at the rear of the HDTV

3. Turn on the the HDTV.

4. Select TV using the SOURCE button on the remote, side of the HDTV, or pressing the TV button on the Remote

Control.

Using the Antenna or Cable for your VCR

32″LCD TV AOC L32W961

1. Turn off the HDTV and VCR.

2. Connect the “Output to TV”, “RF Out” or “Antenna Out” connector on the rear of your VCR to the TV connector at

the rear of the HDTV.

3. Turn on the HDTV and VCR.

4. Select TV using the SOURCE button on the remote, side of the HDTV or directly by pressing the TV button on the

Remote Control.

Connecting Your HDTV Set-Top Box

Using HDMI

HDTV Set-Top Boxes that have a HDMI digital interface should be connected to the HDMI input of the LCD HDTV for optimal results.

Connecting your HDTV Set-Top Box (Best)

1. Turn off the HDTV and HDTV Set-Top Box.

2. Connect a HDMI cable to the HDMI output of your HDTV Set-Top Box and the other end to the HDMI Input at the

rear of the HDTV.

3. Turn on the HDTV and HDTV Set-Top Box.

4. Select HDMI using the SOURCE button on the remote, side of the HDTV, or directly by pressing the HDMI/PC

button on the Remote Control.

For HDTV Set-Top Boxes with DVI

1. Turn off the HDTV and HDTV Set-Top Box.

2. Using a HDMI-DVI cable, connect the DVI end to your HDTV Set-Top Box and the HDMI end to the HDMI Input at

the rear of the HDTV.

3. Turn on the HDTV and HDTV Set-Top Box.

4. Select HDMI using the SOURCE button on the remote, side of the HDTV, or directly by pressing the HDMI/PC

button on the Remote Control.

Using Component Video

Connecting your HDTV Set-Top Box (Better):

32″LCD TV AOC L32W961

1. Turn off the HDTV and HDTV Set-Top Box.

2. Connect the Pr (red color) connector on your HDTV Set-Top Box to the corresponding Pr (red color) connector in

the Component group.

3. Connect the Pb (blue color) connector on your HDTV Set-Top Box to the corresponding Pb (blue color) connector

in the Component group.

4. Connect the Y (green color) connector on your HDTV Set-Top Box to the corresponding Y (green color) connector

in the Component group.

5. Using an audio cable (red and white connectors), connect the cable to the audio output connectors associated

with the Component output on your HDTV Set-Top Box and connect the other end to the audio connectors associated with the Component.

6. Turn on the HDTV and HDTV Set-Top Box.

7. Select Component using the SOURCE button on the remote, side of the HDTV or directly by pressing the COMP

button on the Remote Control.

Connecting Your Basic Set-Top Box

Using Composite Video

1. Turn off the HDTV and Set-Top Box.

2. Using an AV Cable, connect the Video (yellow color) connector on your Set-Top Box to the corresponding Video

(yellow color) connector in the AV group at the rear of the HDTV.

3. Using the red and white connectors, connect the cable to the audio output connectors associated with the Video

output on your Set-Top Box and connect the other end to the audio connectors associated with the AV input at the rear of the HDTV.

4. Turn on the HDTV and Set-Top Box.

5. Select AV using the SOURCE button on the remote, side of the HDTV or directly by pressing the VIDEO button on

the Remote Control.

Using Coax (RF)

1. Turn off the HDTV and Set-Top Box.

2. Using a Coax (RF) cable, connect one end to the TV OUT (RF) on your Set Top Box and the other end to the TV

input at the rear of the HDTV.

3. Turn on the HDTV and Set-Top Box.

4. Select TV using the SOURCE button on the remote, side of the HDTV or directly by pressing the TV button on the

32″LCD TV AOC L32W961

Remote Control.

Connecting Your DVD Player

Using HDMI

DVD players that have a digital interface such as HDMI (High Definition Multimedia Interface) should be connected to the HDMI input of the LCD HDTV for optimal results.

Connecting your DVD Player (Best)

1. Turn off the HDTV and DVD player.

2. Connect a HDMI cable to the HDMI output of your DVD player and the other end to the HDMI Input at the rear of

the HDTV.

3. Turn on the HDTV and DVD player.

4. Select HDMI using the SOURCE button on the remote, side of the HDTV or directly by pressing the HDMI/PC

button on the Remote Control.

For DVD Players with DVI:

1. Turn off the HDTV and DVD player.

2. Using a HDMI-DVI cable, connect the DVI end to your DVD player and the HDMI end to the HDMI Input at the

rear of the HDTV.

3. Turn on the HDTV and your DVD player.

4. Select HDMI using the SOURCE button on the remote or side of the HDTV, or directly by pressing the HDMI/PC

button on the Remote.

Using Component Video Connecting your DVD Player (Better)

1. Turn off the HDTV and DVD player.

2. Connect the Pr (red color) connector on your DVD player to the corresponding Pr (red color) connector in the

Component at the rear of the HDTV.

3. Connect the Pb (blue color) connector on your DVD player to the corresponding Pb (blue color) connector in the

32″LCD TV AOC L32W961

Component group at the rear of the HDTV.

4. Connect the Y (green color) connector on your DVD player to the corresponding Y (green color) connector in the

Component group at the rear of the HDTV.

5. Using an audio cable (red and white connectors), connect the cable to the audio output connectors associated

with the Component output on your DVD player and connect the other end to the audio connectors associated with the Component input at the rear of the HDTV.

6. Turn on the HDTV and DVD player.

7. Select Component using the SOURCE button on the remote, side of the HDTV or directly by pressing the COMP

button on the Remote Control.

Using S-Video (AV)

Connecting your DVD Player (Good):

1. Turn off the HDTV and DVD player.

2. Connect the S-Video jack on the rear of your DVD player to the S-Video jack in the AV group on the rear of the

HDTV.

3. Connect an audio cable (white and red connectors) to the audio output connectors associated with the S-Video

output on your DVD player and connect the other end to the audio connectors associated with the AV input on the rear of the HDTV.

4. Turn on the HDTV and DVD player.

5. Select AV using the SOURCE button on the remote, side of the HDTV, or directly by pressing the VIDEO button

on the Remote Control.

Using Composite (AV) Video

Connecting your DVD Player (Good)

1. Turn off the HDTV and DVD player.

2. Connect the Video (yellow color) connector on your DVD player to the Video (yellow color) connector in the AV

group.

3. Connect the R (red color) and L (white color) audio connectors on your DVD player to the corresponding R (red

color) and L (white color) audio input connectors in the AV group.

4. Turn on the HDTV and DVD Player.

32″LCD TV AOC L32W961

5. Select AV using the SOURCE button on the remote, side of the HDTV or directly by pressing the VIDEO button on

the Remote Control.

Connecting Your VCR or Video Camera

1. Turn off the HDTV and VCR or Video Camera.

2. Connect the S-Video jack on the rear of your VCR or Video Camera to the S-Video jack in the AV group on the

rear of the HDTV.

3. Connect an audio cable (white and red connectors) cable to the audio output connectors associated with the

S-Video output on your VCR or Video Camera and connect the other end to the audio connectors associated with the AV input on the rear of the HDTV.

4. Turn on the HDTV and VCR or Video Camera.

5. Select AV using the SOURCE button on the remote, side of the HDTV or directly by pressing the VIDEO button on

the Remote Control.

Connecting to a PC

1. Turn off the HDTV and PC.

2. Connect a 15-pin D-Sub RGB (VGA) cable to the RGB output of your PC and the other end to the VGA input at

the rear of the HDTV.

3. Connect the Audio Out on your computer to the AUDIO input at the rear of the HDTV.

4. Turn on the HDTV and PC.

5. Select VGA using the SOURCE button on the remote, side of the HDTV or directly by pressing the HDMI/PC

button on the Remote.

32″LCD TV AOC L32W961

2.4 Front Panel Control Knobs

32″LCD TV AOC L32W961

Peripheral Connection

1. HDMI – Connect the primary source for digital video such as a DVD multimedia player or set top box through this

all digital connector. The white color band on the rear of the TV indicates this connection.

2. PC IN – Connect the video and audio cables from a computer here.

3. AV IN (AV/S-VIDEO) – Connect the primary source for composite video devices, such as a VCR or video game.

Use the white and red connectors to connect the external audio from the same source. The signal being carried by the S-Video cable and connector, if connected, will take priority over the Video RCA connector (yellow connector).

4. COMPONENT (Y/Pb/Pr with Audio L/R) – Connect the primary source for component video devices such as a

DVD Player or set top box here. From left to right, use red for Pr, blue for Pb, green for Y, red for right audio (R) and white for left audio (L) inputs.

5. TV – Connect to an antenna or digital cable (out-of-the-wall, not from Cable Box) for Digital TV.

6. SPDIF (Optical Digital Audio Out) – When a digital audio signal is associated with the input selected for viewing,

the digital audio will be available on this SPDIF connection to your home theater system.

32″LCD TV AOC L32W961

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 Clock13 CEC 14 NC 15 SCL 16 SDA 17 DDC/CEC Ground 18 +5V Power 19 Hot Plug Detect

32″LCD TV AOC L32W961

3.3 AV/S-Video/Component Video Inputs

AV (Composite Video Input) Video1

Amplitude 1.0 V (p-p), negative sync. Impedance 75 ohm terminated

S-Video (Y / C Input)

S-Video2

System NTSC Y signal amplitude 1.0Vpp (including sync) C signal amplitude 0.286Vpp Impedance 75 ohm terminated

Component (Y, Pb/Cb, Pr/Cr Input)

Video3

Y signal amplitude 1.0Vpp (including sync)

Impedance 75 ohm terminated

3.4 Compatible Mode Table

System NTSC

System 1080i, 480p, 720p, 480i

Cr, (R-Y) / Cb, (B-Y)

Signal amplitude

±0.35Vpp, 75 ohm

Mode Resolution

640x480@60Hz 31.469 N 59.940 N 25.175

VGA

SVGA

XGA

WXGA

640x480@72Hz 37.861 N 72.809 N 31.500

640x480@75Hz 37.5 N 75 N 31.500 720x400@70Hz 31.469 N 70.087 P 28.322

800x600@56Hz 35.156 P 56.25 P 36.000 800x600@60Hz 37.879 P 60.317 P 40.000 800x600@72Hz 48.077 P 72.188 P 50.000

800x600@75Hz 46.875 P 75 P 49.5 1024x768@60Hz 48.363 N 60.004 N 65.000 1024x768@70Hz 56.476 N 70.069 N 75.000 1024x768@75Hz 60.023 P 75.029 P 78.750

1280x720@60Hz 45 P 60 P 74.25 1280x768@60Hz 47.396 P 59.995 N 68.25

1360x768@60Hz 47.712 P 60.015 P 85.5

VESA MODES

Horizontal Vertical

Nominal

Frequency

(KHz)

Sync

Polarity

Nominal

Freq.

(Hz)

Sync

Polarity

Nominal

Pixel Clock (MHz)

32″LCD TV AOC L32W961

4. Mechanical Instructions

1. Remove the screws to remove the stand base and rear cover.

2. Release connectors.

32″LCD TV AOC L32W961

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

4. Remove the screws to remove speaker.

5. Remove the screws to remove bracket.

32″LCD TV AOC L32W961

6. Remove panel.

7. Remove key board and IR board.

32″LCD TV AOC L32W961

5. Repair Flow Chart

1. No power

No power (LED “Off”)

Check the AC input and the

ower is “ON”?

Yes

Power board output=5V?

Yes

Check the IR board and LED

Replace the IR board

Replace the main board

Power “On”

Replace the power board

32″LCD TV AOC L32W961

2. Can’t start

Check the power key is under control?

Can’t start (LED Red)

Power board output＝12V?

Yes

Check the IR receiver is normal?

Replace the main board

Replace the Power board

Replace the power board

Yes

Replace the key board

Yes

Replace the IR board

32″LCD TV AOC L32W961

3. Abnormal Display

Abnormal Display

Check the source

Yes

Enter factory mode to do

“EEPROM initial”&“Reset”

Reset the source

Check the main board

Yes

Check the LVDS cable

Yes

Check the panel

Replace the panel

Replace the main board

Replace the LVDS cable

32″LCD TV AOC L32W961

4. No display

Check TV is under control and power on/off by remote control and power key?

Yes

Check the LVDS cable

Yes

Panel Vcc = 12V?

Yes

Replace the Panel

No display (LED Blue)

Yes

Check the backlight is

“On”?

Reinsert or replace the LVDS cable

Replace the main board

Check the B/L

signal is available?

Yes

Power board output＝12V？

Yes

Replace the Panel

Replace main board

Replace the power board

32″LCD TV AOC L32W961

5. Sound problem

Check the speaker resistance value is in spec (Remark: The value is marked on the speaker)?

No sound or sound abnormal

Check the audio source connection

and the TV system are correct？

Yes

Check the TV is muted, adjust the

volume or enter the menu to reset?

Enter factory mode to do “Reset”

Check the cable between the speakers and main board is OK?

Yes

Reinsert the audio cable or change the TV system

Replace the cable

Replace the main board

Replace the speaker

32″LCD TV AOC L32W961

prop

6. Remote Control malfunction

Remote Control malfunction

Check the remote control battery is not

erly placed or no power?

Use the other remote controls

Whether the IR board is

abnormal?

Yes

Replace the battery

Yes

Replace the remote control

Yes

Replace the IR board

Replace the main board

32″LCD TV AOC L32W961

7. OSD is unstable or can’t work normally

OSD is unstable or can’t work normally

Key board connected properly?

Yes

Buttons are OK?

Yes

Key board is OK?

Yes

Enter factory mode to do “Reset”

Replace the main board

Reconnect the key board

Replace the button function

Replace the key board

+ 192 hidden pages

AOC L32W961 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual