Table Of Contents - Casio QV-770 Service Manual

SPECIFICATIONS ...................................................................................................................................... 1
BLOCK DIAGRAM .....................................................................................................................................2
ADJUSTMENT ...........................................................................................................................................3
1-1. Loading color parameter ................................................................................................................3
1-2. Defect correct ..................................................................................................................................4
1-3. Strobe adjust ...................................................................................................................................4
1-4. Strobe check ...................................................................................................................................5
1-5. Display appearance when using flash. ......................................................................................... 7
1-6. Current consumption .....................................................................................................................7
1-7. IrDA Test ..........................................................................................................................................7
1-8. Test program ...................................................................................................................................8
1. Standard test program (including QV-770 Built in ROM) ........................................................8
2. Special test program (including QV-770 Built in ROM) ......................................................... 12
Battery check ............................................................................................................................12
Key check ..................................................................................................................................13
Last memory set .......................................................................................................................13
2. Adjustment of PCB-DA .................................................................................................................... 14
Adjustment of VCC7, VCC3, voltage check of VCC1 ....................................................................15
Operation Check ..............................................................................................................................15
3. Adjustment of PCB-L .......................................................................................................................16
VCC3, VCC5 voltage check LA-PCB ..............................................................................................17
VCC2 adjustment and VCC7, VCC8, VEE2 voltage check ...........................................................17
VCO free run frequency adjustment ..............................................................................................17
BL drive voltage adjustment ........................................................................................................... 18
VCOM AC adjustment and VCOM DC coarse adjustment ............................................................18
Bright voltage setting and contrast adjustment (PCB-LA) ..........................................................19
Color adjustment (PCB-LA) ............................................................................................................19
TINT adjustment ...............................................................................................................................20
DISASSEMBLY ........................................................................................................................................21
EXPLODED VIEW .................................................................................................................................... 26
PARTS LIST ............................................................................................................................................. 28
PRINTED CIRCUIT BOARDS .................................................................................................................. 33
SCHEMATIC DIAGRAMS ........................................................................................................................37
TROUBLE SHOOTING ............................................................................................................................43
CONTENTS