Service manual

18.5″ LCD Color Monitor BenQ G925HDA
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Content Index
1. About this Manual ................................................................................................................................................... 5
1.1 Important ............................................................................................................................................................ 5
1.2 Trademark .......................................................................................................................................................... 5
2. Introduction ............................................................................................................................................................. 6
2.1 RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS. .................................................... 6
2.2 Safety Warning and Notice ................................................................................................................................. 6
2.3 Compliance Statement ....................................................................................................................................... 7
3. General Description ................................................................................................................................................ 8
4. Related service information................................................................................................................................... 8
5. Product Overview ................................................................................................................................................... 9
5.1 Monitor Specifications ........................................................................................................................................ 9
5.2 Packing ............................................................................................................................................................. 11
Level 1 Cosmetic / Appearance / Alignment Service ............................................................................................ 13
Visual Inspection & Cleaning .................................................................................................................................. 13
Software/Firmware Upgrade Process .................................................................................................................... 13
Level 2 Circuit Board and Standard Parts Replacement ...................................................................................... 27
Product Exploded View .......................................................................................................................................... 27
Six Angles’ View ..................................................................................................................................................... 29
Product Disassembly .............................................................................................................................................. 30
Block Diagram ........................................................................................................................................................ 34
Schematic Diagram ................................................................................................................................................ 36
Troubleshooting ...................................................................................................................................................... 44
PCB LAYOUT ......................................................................................................................................................... 50
Appendix 1 – Screw List / Torque ........................................................................................................................... 57