AOC L32W431 Manual de usuario
32″LCD TV AOC L32W431
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Service
Service
Service
显示桌面.scf
Horizontal Frequency
31.5kHzto49kHz
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
Table Of Contents.......…….............................…........1
Revision List……………………………………………....2
Important Safety Notice.......................................……......3
1. General Specification..............................………........4
2. Operating Instructions…………………….……….......5
2.1. The Use Of Remote Control…….………….…….......5
2.2. Front Panel Control Knobs……………….……….....6
2.3. To Use The Menu…...…………………….……….......7
2.4. How To Connect…….…………………….……….....13
3. Input/Output Specification…………....................…....15
4. Mechanical Instructions…………………….................17
5. Repair Flow Chart ……………………….…….…….....20
6.White-Balance, Luminance Adjustment….............26
7.PCB Layout …………..………………....….......30
7.1 Main Board…………..………….……….......30
7.2 Power Board…………..………….……….......33
7.3 Tuner Board…………………..……….......35
8. Block Diagram…………………………………..37
9. Schematic Diagram………………………………...38
9.1 Main Board………...………………………….......38
9.2 Power Board………...……….……….…………...49
9.3 Tuner Board………………….………….…….......51
10.Exploded View..……………............................55
11.BOM List……………….……………………….56
12.Different Parts List………………………………107
32″LCD TV AOC L32W431
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Revision List
Version Release Date Revision History TPV Model
A00 Apr.-02-2007 Initial Release E326MTNSD1A3NP
A01 May-29-2007 Second Release E326MTNCW1GLN
A02 Jan-07-2008 Add SKD model for Brazil E327MTNSW1AC6N
32″LCD TV AOC L32W431
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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 may 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 radiation 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 L32W431
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1. General Specification
Items Specification
LCD Panel
Screen Size 32”(81cm)TFT-LCD Panel
Panel type TV 32" B1-L04 CMO
Aspect Ratio 16:9
Resolution (Native) 1366 x 768 WXGA
Active Area 714.96 (H) x 404.6 (V) mm
Pixel Pitch 0.1730 (H) x 0.5190 (V) mm
Contrast Ratio 700:1 (Typical)
Brightness 420 nits (Typical)
Response Time 6.5ms (G-G)
Display colors 16.7 million
Rated Life (Backlight) > 60000 Hrs (at 4.5mA)
Preset Color Cool /warm
TV Function
TV Tuning System NTSC 181 channel (PLL band) electronic adjustment
system
Sound System MTS + SAP
Color systems NTSC / PALN / PALM
Video Input
AV1 RCA x 1 Audio channel L / Rx 1
AV2 RCA x 1
S-Video x 1
Audio channel
L / R x 1（shared）
S-VIDEO S-VIDEO x 1 Audio channel L / Rx 1
HDMI HDMI x 1 High Definition Media
Interface
COMPONENT
(480i/480p/720p/1080i) Y,Pb,Pr x 1 Audio channel L / Rx 1
PC Input
Signal Input Analog: D-Sub 15 pin (detachable cable)
PnP compatibility DDC 2B
Input frequency Analog: FH: 31.5kHz to 49kHz
FV: 56Hz to 75Hz
Recommended Analog:1024 x 768 (60Hz)
Input Audio Headphone Mini-jack for stereo (3.5ø)
Audio Output Audio Output: L / R
Speaker (built-in): Two 15W speakers
Headphone Mini-jack for stereo (3.5ø)
Line Output (RCA L/R)
OSD language English / Spanish / Portuguese
Wall Mount VESA 100mm X 100mm
Power
Power Input AC100V~240V, 50/60Hz
Power
Consumption <200W
Environment
Operating Temperature + 0 °C ~ + 40 °C
Operating Humidity 10% to 85%
Storage Temperature - 10 °C ~ + 60 °C
Accessories Remote Controller, Batteries (x2), AC Power Cord, D-sub Signal Cable, Audio
Cable ,User’s Manual
32″LCD TV AOC L32W431
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2. Operations Instructions
2.1 The Use of Remote Control
32″LCD TV AOC L32W431
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2.2 Front Panel Control Knobs
: Press to turn the TV on or off.
MENU Key: Press to show the OSD menu and exit OSD menu at the TV.
Down / Up Key: Press to select OSD function or change channel.
- / + Key: Press to confirm your function selection and make adjustment.
Source Key: Press to select your input source.
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2.3 OSD Operations
To use the menus：
1. Press the MENU button to display each menu.
2. Use the cursor 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.
Main menu
SOURCE SELECT
Press the INPUT key on remote control or SOURCE key on keyboard to select source:
TV>AV1>AV2>S-VIDEO>COMPONENT>VGA>HDMI
Menu screen in TV mode:
Press the MENU button to enter into the OSD MENU in TV mode. Items adjustable include: VIDEO SETTING,
SOUND SETTING, OPTIONS SETTING, and CHANNEL SETTING
VIDEO SETTING:
1. PICTURE: User can select PERSONAL,VIVID,STANDARD,MILD,if selected except PERSONAL
item, Contrast, Brightness ,Saturation,Sharpness,NR,Backlight can’t adjust.
2. CONTRAST: Adjust black and white level, suitable contrast can make picture more lightly. Adjustment range is
from 0 to 100.
3. BRIGHTNESS: Adjust background brightness, user can collocation it with contrast adjustment range is from 0 to
100.
32″LCD TV AOC L32W431
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When adjust any item sub-OSD will show up like this.
4. SATURATION: Adjust color saturation, range is from 0 to 100.
5. SHARPNESS: Adjustment picture sharpness, range is from 0 to 100.
6. NR: When the signal is poor, you can turn on the noise reduction function.
7. BACKLIGHT: The adjustment range of Black Level is from 0 to 10.
You can adjust contrast, brightness, Saturation, Sharpness to your prefer level.
SOUND SETTING
1. VOLUME: The Volume adjustment range is from 0 to 100
You can adjust the Volume of the picture to the level you prefer.
2.EFFECT：You can choice your prefer mode of CUSTOM, STEREO, NEWS, MOVIE, MUSIC, BBE VIVA.
3.120Hz, 500Hz, 1500Hz, 5 KHz, 10KHZ. Choice the prefer frequency to increase or decrease.
OPTIONS SETTING:
English
1. MENU LANGUAGE: This indicates the different languages available for the OSD menu, including English, panish
and Portuguese. The default is English.
2. MENU TIMEOUT: OSD stay timer.
3. MENU BACKGROUND: User can select Opaque or transparency with Menu background.
4. SLEEP TIMER: Use this button to set a time period after which the TV will enter into standby mode. The time
period can be 0>15>30>45 > 60 > 90 >120 minutes. The timer will begin to count down from the selected number of
minutes after the OSD menu disappears.
32″LCD TV AOC L32W431
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Note: To check the remaining time, press the SLEEP button. To cancel the sleep timing, press the SLEEP button
repeatedly until 0 appears. If you turn off the TV after you set the sleep timing, the setting will be cleared. You will
need to set it again.
5. BLUE SCREEN: When there is no signal input in TV, AV, S-Video and HDTV modes, the screen will become blue.
If set to on, the screen will become blue. If set to Off, the screen will display a snowy picture when in TV signal mode
and become black in other signal modes. The default is On.
6. CC: You can enter to select the closed caption function.
7. RESET: Used to resume the TV’s default settings.
CHANNEL SETTING:
1. AIR/CABLE: You can select the TV signal AIR or CABLE.
2. AUTO SEARCH: Used to scan all the TV channels and save to memory.The TV’s total number of channels is 125
(1-125). If you use the remote control to select a number out of the range of 1-125, it will automatically skip to the
channel number you previously watched.
Menu screen in VGA mode:
The TV has a VGA analog interface, which can be switched using the INPUT button on the remote control.
32″LCD TV AOC L32W431
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Press the MENU button to enter into the OSD Main Menu. Adjustable items include: VIDEO SETTING, SOUND
SETTING, OPTIONS SETTING, VGA SETTING
VIDEO SETTING:
1. CONTRAST: Adjust black and white level, suitable contrast can make picture more lightly. Adjustment range is
from 0 to 100.
2. BRIGHTNESS: Adjust background brightness, user can collocation it with contrast adjustment range is from 0 to
100.
SOUND SETTING:
1. VOLUME: The Volume adjustment range is from 0 to 100
You can adjust the Volume of the picture to the level you prefer.
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