Acer AL501 Manual

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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

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

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