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
Summary of Contents for QV-770
Page 1: ...R QV 770 APR 1998 without price KX 773...
Page 16: ...14 2 Adjustment of PCB DA Adjustment points of PCB K773 DA...
Page 28: ...26 EXPLODED VIEW 38 35 S3 S3 39 27 32 S3 38 33 38 S3 S2 37 33 34 36 S1 29 40 30 28 31...
Page 35: ...33 PRINTED CIRCUIT BOARDS D board PCB K773A DA...
Page 36: ...34 L board PCB K773A LA...
Page 37: ...35 L board PCB K773A LB CA board PCB K773A CA...
Page 38: ...36 K board PCB K773A KA PCB K773A KB...
Page 39: ...37 SCHEMATIC DIAGRAMS DA CIR K0773AAA...
Page 40: ...38 LA CIR K0773AAA...
Page 41: ...39 LB CIR ZK0773AAA...
Page 42: ...40 KX CIR ZK0773AAA...
Page 43: ...41 KA CIR K0773AAA...
Page 44: ...42 KB CIR K0773AAA...
