Casio QV-770 Specifications download pdf (Page 2)

CONTENTS

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