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19" Wide LCD Color Monitor AOC 1912VWA
Service
Service
Service
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Horizontal Frequency
30 kHz-80 kHz
TABLE OF CONTENTS
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Description Page
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Table Of Contents..........................................................1 6. Schematic.....................................................19
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Revision List.................................................................2 6.1 Main Board..........................................................19
Important Safety Notice...............................................3 6.2 Power Board.......................................................24
1. Monitor Specification..................................................4 6.3 Key Board ...................................................26
2. LCD Monitor Description........................................5 6.4 Audio Board..........................................................27
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3. Operation Instruction.............................................6 7. PCB Layout.....................................................28
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3.1 General Instructions...................................................6 7.1 Main Board.....................................................28
3.2 Control Button....................................................6 7.2 Power Board.........................................................31
3.3 Adjusting the Picture..........................................8 7.3 Audio Board.................................................33
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4. Input/Output Specification.......................................10 7.4 Keypad Board..............................................33
4.1 Input Signal Connector.......................................10 8. Maintainability................................................34
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4.2 Factory Preset Display Modes.........................11 8.1. Equipments and Tools Requirement.....................34
4.3 Panel Specification...............................................12 8.2. Trouble Shooting................................................35
5.Block Diagram........................................................15 9. White-Balance, Luminance adjustment...................41
5.1 Software Flow Chart..........................................15 10.Monitor Exploded View...................................42
5.2 Electrical Block Diagram.................................17 11.BOM List...............................................................43
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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19" Wide LCD Color Monitor AOC 1912VWA
Revision List
Revision Date Revision History TPV Model
A00 Dec-27-2006 Initial release T96HNNNQWCAO8P
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19" Wide LCD Color Monitor AOC 1912VWA
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.
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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,
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or other hazards.
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Under no circumstances should the original design be modified or altered without written permission from AOC. AOC
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assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
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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.
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CAUTION -The use of optical instruments with this product will increase eye hazard.
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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
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THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
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-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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19" Wide LCD Color Monitor AOC 1912VWA
1. Monitor Specifications
Driving system TFT Color LCD
LCD Panel Size 48cm(19.0")
Pixel pitch 0.2835mm( H )