Service Manual AOC 931SW+
3
CONTENTS
1. LCD Specifications ........................................................................................................................... 4
1.1 Product Features ......................................................................................................... 4
1.2 Factory preset modes .................................................................................................. 5
1.3 VGA Interface description ............................................................................................ 5
2. Operation instruction ..................................................................................................................... 6
2.1 Control Buttons ............................................................................................................ 6
2.2 OSD User mode adjustment ..................................................................................... 7
2.3 OSD Lock Function ................................................................................................... 9
3. Panel Feature .................................................................................................................................. 10
3.1 General Specifications ............................................................................................... 10
3.2 Electrical Absolute Ratings ........................................................................................ 10
3.3 Electrical Characteristics ............................................................................................ 11
3.4 TFT LCD Module Block Diagram ............................................................................... 11
3.5 LCD module input terminal pin assignment ............................................................... 12
4.Block Diagram .................................................................................................................................. 13
4.1 LCD Block Diagram ................................................................................................... 13
4.2 MainBoard Block Diagram ......................................................................................... 13
4.3 Power Board Block Diagram ...................................................................................... 14
4.4 Software Flow Chart .................................................................................................. 15
5. Circuit Schematic ............................................................................................................................ 16
5.1 Main Board-715G3244-2-2 ........................................................................................ 16
5.2 Power Board 715G2510-2-4 ...................................................................................... 20
5.3 Key Board 715G3098-2-2 .......................................................................................... 22
6.Exploded Views ................................................................................................................................ 23
7. PCB Layout ...................................................................................................................................... 24
7.1 MainBoard- 715G3244-2-2 ........................................................................................ 24
7.2 PowerBoard 715G-2510-2-4 ...................................................................................... 25
7.3 KeyBoard 715G3098 2 2 ...................................................................................... 26
8.Trouble treatment ............................................................................................................................. 27
8.1 Maintainability Requirement ....................................................................................... 27
8.2 Trouble Shooting ........................................................................................................ 27
8.3 Software update step（SOP） .................................................................................. 32
8.4 Writing DDC program step ......................................................................................... 38
8.5 Factory mode adjustment .......................................................................................... 40
9.BOM List ............................................................................................................................................ 41
9.1 Model：T9ANR5NYNNACNNJ ........... ............... ............. ............. ............. ............. .... 41
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