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32 LCD TV AOC L32W431
Service
Service
Service
.scf
Horizontal Frequency
31. 5 kHz to 49 kHz
TABLE OF CONTENTS
Description Page Description Page
Table Of Contents.....................................................1 7.PCB Layout ..............................................30
Revision List.......................................................2 7.1 Main Board...........................................30
Important Safety Notice...................................................3 7.2 Power Board...........................................33
1. General Specification...............................................4 7.3 Tuner Board.......................................35
2. Operating Instructions.........................................5 8. Block Diagram.........................................37
2.1. The Use Of Remote Control.................................5 9. Schematic Diagram.......................................38
2.2. Front Panel Control Knobs.................................6 9.1 Main Board.................................................38
2.3. To Use The Menu...............................................7 9.2 Power Board...............................................49
2.4. How To Connect..............................................13 9.3 Tuner Board................................................51
3. Input/Output Specification.......................................15 10.Exploded View.............................................55
4. Mechanical Instructions.........................................17 11.BOM List...............................................56
5. Repair Flow Chart ..............................................20 12.Different Parts List....................................107
6.White-Balance, Luminance Adjustment................26
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
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32 LCD TV AOC L32W431
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
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32 LCD TV AOC L32W431
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.)
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32 LCD TV AOC L32W431
1. General Specification
Items Specification
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
LCD Panel
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
NTSC 181 channel (PLL band) electronic adjustment
TV Tuning System
system
TV Function Sound System MTS + SAP
Color systems NTSC / PALN / PALM
AV1 RCA x 1 Audio channel L / Rx 1
RCA x 1 Audio channel
AV2
S-Video x 1 L / R x 1shared
Video Input S-VIDEO S-VIDEO x 1 Audio channel L / Rx 1
High Definition Media
HDMI HDMI x 1
Interface
COMPONENT
Y,Pb,Pr x 1 Audio channel L / Rx 1
(480i/480p/720p/1080i)
Signal Input Analog: D-Sub 15 pin (detachable cable)
PnP compatibility DDC 2B
PC Input Analog: FH: 31.5kHz to 49kHz
Input frequency
FV: 56Hz to 75Hz
Recommended Analog:1024 x 768 (60Hz)
Input Audio Headphone Mini-jack for stereo (3.5