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AOC LM929
SERVICE MANUAL
19" LCD MONITOR
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LM929
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THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
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AOC LM929
Table of Content
Revision List......................................................................................................................... 4
1. Monitor Specifications........................................................................................................ 4
2. LCD Monitor Description..................................................................................................... 5
3. Operating Instructions........................................................................................................ 6
3.1 General Instructions......................................................................................................... 6
3.2 Front Panel Control......................................................................................................... 6
3.3 Adjusting the Picture........................................................................................................ 7
4. Input/Output Specification................................................................................................... 9
4.1 Input Signal Connector..................................................................................................... 9
4.2 Power Supply Requirements............................................................................................. 10
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4.3 Factory Preset Display Modes............................................................................................ 11
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4.4 Panel Specification.......................................................................................................... 12
4.4.1 General Features...................................................................................................... 12
4.4.2 Display Characteristics............................................................................................... 12
4.4.3 Optical Characteristics................................................................................................ 12
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4.4.4 Electrical Characteristics............................................................................................. 13
5. Block Diagram................................................................................................................... 14
5.1 Monitor Exploded View..................................................................................................... 14
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5.2 Software Flowing Chart.................................................................................................... 15
5.3 Electrical Block Diagram................................................................................................... 17
5.3.1 Main Board............................................................................................................... 17
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5.3.2 Inverter/Power Board.................................................................................................. 18
6. Schematic......................................................................................................................... 19
6.1 Main Board.................................................................................................................... 19
6.2 Power Board.................................................................................................................. 26
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6.3 Audio Board.................................................................................................................. 28
7. PCB Layout...................................................................................................................... 29
7.1 Main Board.................................................................................................................... 29
7.2 Power Board.................................................................................................................. 30
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7.3 Audio Board................................................................................................................... 31
7.4 Key Board..................................................................................................................... 31
7.5 CNPC Board.................................................................................................................. 31
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8. Maintainability................................................................................................................... 32
8.1 Equipments and Tools Requirement.................................................................................... 32
8.2 Trouble Shooting............................................................................................................. 33
8.2.1 Main Board............................................................................................................... 33
8.2.2 Power /Inverter Board................................................................................................. 36
8.2.3 Keypad Board........................................................................................................... 38
9. White-Balance, Luminance Adjustment................................................................................. 39
10. EDID Content................................................................................................................... 41
11. BOM LIST........................................................................................................................ 42
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AOC LM929
Revision List
Version Date Revision History TPV Model Name
A00 Feb-15-06 Initial Release T980KAQDBCAOW
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AOC LM929
1. Monitor Specifications
Items Description
Driving system TFT Color LCD
Type M190EN02
Size 48.0cm(19.0")
LCD Panel
Pixel pitch 0.294mm (H) x 0.294mm (V)
Viewable angle 170(H) 170(V)
Response time 25 ms
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Sync. Type H/V TTL
15Pin Analog
Input Signal
Input 24Pin Digital
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H-Frequency 30kHz