Table of Contents
Advertisement
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
4. ADJUSTMENT OF BOARDS ..........................................................................................7
A. Connection Method................................................................................................................................... 7
5. DISPLAY CONTROL BOARD .........................................................................................8
A. Description ................................................................................................................................................ 9
B. Features .................................................................................................................................................... 9
C. Block Diagram (Control CKT) ................................................................................................................... 9
D. Connector Locations ............................................................................................................................... 11
E. Connector Type ...................................................................................................................................... 11
F. Connector pin assignment ...................................................................................................................... 12
6. VK-546 CONTROL PANEL BOARD .............................................................................16
A. Description .............................................................................................................................................. 16
B. Connector and Switch Locations ............................................................................................................ 16
C. Connector type........................................................................................................................................ 16
D. Connector pin Assignment...................................................................................................................... 17
7. POWER BOARD............................................................................................................19
A. Description .............................................................................................................................................. 19
B. Electrical characteristics ......................................................................................................................... 19
C. Connector locations ................................................................................................................................ 20
8. CIRCUIT DESCRIPTION ...............................................................................................21
A. Micro-Controller Circuit ........................................................................................................................... 21
B. Circuit of Plug and Play........................................................................................................................... 21
C. System Clock .......................................................................................................................................... 21
D. Image Engine (Zoom) ............................................................................................................................. 21
E. Power Regulator ..................................................................................................................................... 21
9. INTRODUCTION............................................................................................................22
A. Front Panel Control and Led................................................................................................................... 22
B. Rear Panel connector Input Signals......................................................................................................... 24
10.
TROUBLESHOOTING .............................................................................................25
A. Main Procedure....................................................................................................................................... 25
11.
MECHANICAL PARTS AND DRAWINGS ...............................................................30
12.
PCB PARTS AND DRAWINGS................................................................................40
Table of Contents
.......................................................................6
1
Advertisement
Table of Contents
