Text preview for : LM927U.pdf part of AOC LM927U AOC Monitor LM927U.pdf
Back to : LM927U.pdf | Home
AOC LM927U
SERVICE MANUAL
19" LCD Monitor
LM927U
t
ne
el.
wj
w.
ww
://
tp
ht
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 RELIABILITY
FOR CHANGES, ERRORS OR OMISSIONS.
1
AOC LM927U
Table of Content
Revision List................................................................................................................... 3
1. Monitor Specifications.................................................................................................. 4
2. LCD Monitor Description............................................................................................... 5
3. Operating Instructions.................................................................................................. 6
3.1 General Instructions................................................................................................... 6
3.2 Control Buttons......................................................................................................... 6
3.3 Adjusting the Picture..................................................................................................... 7
4. Input/Output Specification............................................................................................. 9
4.1 Input Signal Connector............................................................................................... 9
4.2 Factory Preset Display Modes...................................................................................... 10
4.3 Power Supply Requirements.......................................................................................... 11
t
4.4 Panel Specification.................................................................................................... 11
ne
4.4.1 Panel Feature....................................................................................................... 11
4.4.2 Display Characteristics............................................................................................ 11
4.4.3 Optical Characteristics.......................................................................................... 12
el.
4.4.4 Parameter Guide Line For CCFL Inverter.................................................................. 12
5. Block Diagram............................................................................................................. 13
wj
5.1 Monitor Exploded View............................................................................................... 13
5.2 Software Flow Chart................................................................................................... 14
5.3 Electrical Block Diagram............................................................................................. 16
w.
5.3.1 Main Board........................................................................................................... 16
5.3.2 Inverter/Power Board............................................................................................ 17
ww
6. Schematic................................................................................................................... 19
6.1 Main Board................................................................................................................. 19
6.2 Power Board............................................................................................................. 25
://
6.3 Audio Board............................................................................................................. 28
7. PCB Layout................................................................................................................... 29
7.1 Main Board................................................................................................................. 29
tp
7.2 Power Board............................................................................................................. 30
7.3 Audio Board............................................................................................................. 31
ht
7.4 Key Board................................................................................................................ 31
7.5 USB Board................................................................................................................ 31
7.6 CNPC Board............................................................................................................. 31
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............................................................................................................. 40
11. BOM LIST..................................................................................................................... 41
2
AOC LM927U
Revision List
Revision Date Change Description
A00 Jul-11-05 Original Revision
t
ne
el.
wj
w.
ww
://
tp
ht
3
AOC LM927U
MONITOR SPECIFICATIONS
Driving system TFT Color LCD
Size 48.0cm(19.0")
Pixel pitch 0.294mm( H )x 0.294mm( V )
LCD Panel
Viewable angle 170