Hitachi CML153, Service Manual

Page: 2 / 42

1. ELECTRICAL REQUIREMENTS .............................................1
A. LCD Panel Specification................................................................................. 1
B. Controls.......................................................................................................... 2
C. Power Management ....................................................................................... 2
D. Display Modes for Inspections........................................................................ 4
2. ADJUSTMENT CONDITIONS..................................................5
A. Measuring Apparatuses Used ........................................................................ 5
B. Input Signal .................................................................................................... 5
C. Indication........................................................................................................ 5
3. ADJUSTMENT OF POWER SUPPLY .....................................6
A. Adjustment of Switching Regulator................................................................. 6
4. ADJUSTMENT OF BOARDS...................................................6
A. Connection Method ........................................................................................ 6
5. VL-531 DISPLAY CONTROL BOARD.....................................7
A. Description ..................................................................................................... 7
B. Features......................................................................................................... 7
C. Block Diagram (Control CKT)......................................................................... 7
D. Connector Locations ...................................................................................... 8
E. Connector Type.............................................................................................. 8
F. Connector Pin Assignment ............................................................................. 8
6. VK-526 CONTROL PANEL AND AUDIO BOARD...................13
A. Description ..................................................................................................... 13
B. Electrical characteristics................................................................................. 13
C. Connector and Switch Locations .................................................................... 13
D. Connector Type ............................................................................................. 13
E. Connector Pin Assignment ............................................................................. 14
7. VP-531 POWER BOARD.........................................................16
A. Description ..................................................................................................... 16
B. Electrical characteristics................................................................................. 16
C. Connector locations ....................................................................................... 17
8. CIRCUIT DESCRIPTION .........................................................19
A. Micro-Controller Circuit................................................................................... 19
B. Circuit of Plug and Play .................................................................................. 19
C. System Clock ................................................................................................. 19
D. Image Engine ( Zoom) ................................................................................... 19