Acer AL501, Manual

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1
1. ELECTRICAL REQUIREMENTS .................................................................................... 2
A. LCD Panel Specification............................................................................................................................ 2
B. Controls ..................................................................................................................................................... 3
C. Power Management .................................................................................................................................. 3
D. Display Modes FOR Inspections ............................................................................................................... 5
2. ADJUSTMENT CONDITIONS......................................................................................... 6
A. Measuring Apparatuses Used ................................................................................................................... 6
B. Input Signal................................................................................................................................................ 6
C. Indication ................................................................................................................................................... 6
3. ADJUSTMENT OF POWER SUPPLY ...................................................................... 6
A. Adjustment of Switching Regulator (Adapter) ........................................................................................... 6
4. ADJUSTMENT OF BOARDS.......................................................................................... 7
A. Connection Method ................................................................................................................................... 7
5. VL-531 DISPLAY CONTROL BOARD............................................................................ 7
A. Description................................................................................................................................................. 7
B. Features .................................................................................................................................................... 7
C. Block Diagram (Control Ckt)...................................................................................................................... 8
D. Connector Locations.................................................................................................................................. 9
E. Connector Type ......................................................................................................................................... 9
F. Connector Pin Assignment ...................................................................................................................... 10
6. VK-531 CONTROL PANEL BOARD............................................................................. 14
A. Description............................................................................................................................................... 14
B. Connector and Switch Locations ............................................................................................................. 14
C. Connector type ........................................................................................................................................ 14
D. Connector pin Assignment ...................................................................................................................... 15
7. VP-531 POWER BOARD .............................................................................................. 17
A. Description............................................................................................................................................... 17
B. Electrical characteristics .......................................................................................................................... 17
C. Connector locations................................................................................................................................. 18
8. CIRCUIT DESCRPTION ............................................................................................... 20
A. Micro-Controller Circuit............................................................................................................................ 20
B. Circuit of Plug and Play ........................................................................................................................... 20
C. System Clock........................................................................................................................................... 20
D. Image Engine (Zoom).............................................................................................................................. 20
E. Power Regulator...................................................................................................................................... 20
9. INTRODUCTION ........................................................................................................... 21
A. Front Panel Control And Led ................................................................................................................... 21
B. Rear Panel Connector Input Signals ....................................................................................................... 22
10.TROUBLESHOOTING................................................................................................. 23
A. Main Procedure ....................................................................................................................................... 23
APPENDIX A: PARATS LISTS……………..…………………………………………………..28
APPENDIX B: DISPLAY UNIT ASSEMBLY…………………………………………………..35
APPENDIX C: P.C.B.A ASSEMBLY………………………………………………………… ...40