Service Manuals, User Guides, Schematic Diagrams or docs for : AOC LCD L27W431 aoc_l27w431_lcd_tv

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27'' LCD TV                                                                                                         AOC L27W431



Service
Service
Service




                                                                 .scf


                                                                                                                  Horizontal Frequency
                                                                                                                       31.5 kHz to 49 kHz
                                                        TABLE OF CONTENTS


Description                                                     Page Description                                                    Page


Table Of Contents...........................................................1 6.White-Balance, Luminance Adjustment...........25
Revision List..........................................................2 7.PCB Layout ..................................................29
Important Safety Notice...................................................3 7.1.Main Board...............................................29
1.General Specification..................................................4 7.2.Power Board..............................................32
2.Operating Instructions............................................5 7.3.Tuner Board................................................34
2.1.The Use Of Remote Control..................................5 8.Block Diagram..............................................36
2.2.Front Panel Control Knobs....................................6 9. Schematic................................................37
2.3.To Use the Menus................................................7 9.1.Main Board.................................................37
2.4.How To Connect...............................................13 9.2.Power Board..............................................48
3. Input/Output Specification.......................................15 9.3.Tuner Board...............................................50
4. Mechanical Instructions.........................................17 10.Exploded View................................................54
5. Repair Flow Chart ..............................................19 11.BOM List....................................................55




                                                             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



                                                                       1
27'' LCD TV                                               AOC L27W431
                             Revision List

    Version   Release Date     Revision History       TPV Model

     A00      Apr.-05-2007       Initial Release   E276MTNSD1A4NP




                                   2
27'' LCD TV                                                                                        AOC L27W431
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.)




                                                            3
27'' LCD TV                                                                          AOC L27W431
1. General Specification
                 Items                                             Specification
                 Screen Size                 27" TFT-LCD Panel
                 Panel type                  TV 27" B1-L03 CMO
                 Aspect Ratio                16:9
                 Resolution (Native)         1366 x 768 WXGA
                 Active Area                 603.22 (H) x 341.98 (V) mm
                 Pixel Pitch                 0.1455 (H) x 0.4365 (V) mm
 LCD Panel
                 Contrast Ratio              1200:1 (Typical)
                 Brightness                  500 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



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