BenQ G2220HD - 21.5" LCD Monitor, Service Manual, Page: 2 / 47

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Content Index
1. About This Manual............................................................................................................... 3
1.1 Trademark ...................................................................................................................... 3
2. Precautions & Safety Notices.............................................................................................. 4
2.1 Safety Precaution ........................................................................................................... 4
2.2 Product Safety Notice..................................................................................................... 4
2.3 Service Notes ................................................................................................................. 4
3. Product Overview ................................................................................................................ 5
3.1 Power Supply ................................................................................................................. 5
3.2 Signal Interface............................................................................................................... 5
3.3 Scan Range.................................................................................................................... 5
3.4 Support Timings.............................................................................................................. 6
3.5 Operational & Function Specification.............................................................................. 7
3.6 LCD Characteristics...................................................................................................... 10
3.7 User Controls................................................................................................................ 10
3.8 Mechanical Characteristics........................................................................................... 10
3.9 Pallet & Shipment ......................................................................................................... 11
4 Level 1 Cosmetic / Appearance / Alignment Service .......................................................... 12
4.1 Software / Firmware Upgrade Process ......................................................................... 12
4.2 Alignment Procedure (for function adjustment)............................................................. 13
5. Level 2 Disassembly/Assembly/Circuit Board/Standard Parts Replacement..................... 18
5.1 Exploded Diagram ........................................................................................................ 18
5.2 Assembly Block ............................................................................................................ 19
5.3 Disassembly Block ....................................................................................................... 23
5.4 Block diagram............................................................................................................... 27
5.5 Lay out.......................................................................................................................... 35
5.6 Circuit operation theory ................................................................................................ 38
5.7 Trouble Shooting Guide................................................................................................ 41
6. Dimmession drawing…………………………………………………………………….....…….47