Service Manuals, User Guides, Schematic Diagrams or docs for : AOC Monitor LM925
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AOC LM925
SERVICE MANUAL
19" LCD MONITOR
LM925
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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 LM925
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............................................................................................. 9
4.3 Factory Preset Display Modes............................................................................................ 10
4.4 Panel Specification.......................................................................................................... 11
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4.4.1 Panel Features......................................................................................................... 11
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4.4.2 Display Characteristics............................................................................................... 11
4.4.3 Optical Characteristics................................................................................................ 12
4.4.4 Electrical Characteristics............................................................................................. 13
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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
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6.1 Main Board.................................................................................................................... 19
6.2 Audio Board.................................................................................................................. 25
6.3 Power Board.................................................................................................................. 26
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7. PCB Layout...................................................................................................................... 29
7.1 Main Board.................................................................................................................... 29
7.2 Audio Board................................................................................................................... 30
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7.3 Power Board.................................................................................................................. 31
7.4 Key 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 LM925
Revision List
Version Date Revision History TPV Model Name
A00 Feb-08-06 Initial Release T980KH4HBAA1AP
A01 Oct-14-2006 Add TPV Model in item11 T980KA2HLAMGAP
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AOC LM925
1. Monitor Specifications
Items Description
Driving system TFT Color LCD
Type HSD190ME13
Size 48.0cm(19.0")
LCD Panel
Pixel pitch 0.294mm (H) x 0.294mm (V)
Viewable angle 150(H) 135(V)
Response time 8 ms
Sync. Type H/V TTL
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Input Signal 15Pin Analog
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Input
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