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
4.
ADJUSTMENT OF BOARDS.......................................................................................... 7
A.
Connection Method ................................................................................................................................... 7
5.
VL-547 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-546 CONTROL PANEL BOARD............................................................................. 13
A.
Description............................................................................................................................................... 13
B.
Connector and Switch Locations ............................................................................................................. 13
C.
Connector type ........................................................................................................................................ 13
D.
Connector pin Assignment ...................................................................................................................... 14
7.
POWER BOARD........................................................................................................... 15
A.
Description............................................................................................................................................... 15
B.
Electrical characteristics .......................................................................................................................... 15
C.
Connector locations................................................................................................................................. 16
8.
CIRCUIT DESCRPTION ............................................................................................... 17
A.
Micro-Controller Circuit............................................................................................................................ 17
B.
Circuit of Plug and Play ........................................................................................................................... 17
C.
System Clock........................................................................................................................................... 17
D.
Image Engine (Zoom).............................................................................................................................. 17
E.
Power Regulator...................................................................................................................................... 17
9.
INTRODUCTION ........................................................................................................... 18
A.
Front Panel Control and Led ................................................................................................................... 18
B. Rear Panel connector Input Signals ........................................................................................................ 19
10.TROUBLESHOOTING................................................................................................. 20
A.
Main Procedure ....................................................................................................................................... 20
APPENDIX A: DISPLAY UNIT ASSEMBLY.................................................................... 25
APPENDIX A: DISPLAY UNIT ASSEMBLY..................................................................... 35
Содержание AL511
Страница 11: ...11 F 2 ...
Страница 20: ...20 10 TROUBLESHOOTING A Main Procedure ...
Страница 21: ...21 A 1 Power Circuit Troubleshooting ...
Страница 22: ...22 A 2 Backlights Troubleshooting ...
Страница 23: ...23 A 3 Performance Troubleshooting ...
Страница 24: ...24 A 4 Function Troubleshooting ...