Casio QV-5500SX, Service Manual & Parts List

Page: 2 / 48

CONTENTS
SPECIFICATIONS ....................................................................................................................................... 1
BLOCK DIAGRAM ...................................................................................................................................... 3
ADJUSTMENT ............................................................................................................................................ 4
1. Whole unit .......................................................................................................................................... 5
1-1. Loading ADJ program ................................................................................................................. 5
1-2. White balance and Sensitivity adjustment ................................................................................ 7
1-3. White scratch correction ............................................................................................................. 8
1-4. Flash operation and charge current check ............................................................................... 9
1-5. VCOM DC adjustment ................................................................................................................ 11
1-6. Current consumption check ..................................................................................................... 11
2. D-PCB Assy ...................................................................................................................................... 12
2-1. Operation check ......................................................................................................................... 12
3. L,BL PCBs Assy ............................................................................................................................... 13
3-1. VCC2 adjustment and VCC13, VCC7, VEE2 checks ............................................................... 13
3-2. VCC free run frequency adjustment ........................................................................................ 13
3-3. BL drive voltage adjustment ..................................................................................................... 14
3-4. VCOM AC and VCOM DC coarse adjustment .......................................................................... 14
3-5. Brightness voltage setting and contrast adjustment ............................................................. 15
4. L,BL PCBs Assy ............................................................................................................................... 16
4-1. VCC18, VCC15, VEE7 adjustments ........................................................................................... 16
DISASSEMBLY ......................................................................................................................................... 17
EXPLODED VIEW ..................................................................................................................................... 25
PARTS LIST .............................................................................................................................................. 26
PRINTED CIRCUIT BOARDS ................................................................................................................... 32
SCHEMATIC DIAGRAMS ......................................................................................................................... 37
TROUBLESHOOTING .............................................................................................................................. 44
APPENDIX ................................................................................................................................................. 45
1. The distinction method of a model ................................................................................................. 45