1
CONTENTS
SAFETY INFORMATION ..................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................ 5
A
2.1 PACKING ................................................................................................................................................... 8
2.2 EXTERIOR SECTION.............................................................................................................................. 10
2.3 FRONT PANEL SECTION ....................................................................................................................... 12
2.4 LOADING MECHA ASSY ........................................................................................................................ 14
3.1 BLOCK DIAGRAM ................................................................................................................................... 18
3.4 DVDM ASSY 2/4 [FR BLOCK] ................................................................................................................. 26
B
3.9 SACDB ASSY .......................................................................................................................................... 36
3.12 ILKB ASSY............................................................................................................................................. 42
3.13 POWER SUPPLY UNIT.......................................................................................................................... 44
3.14 WAVEFORMS [DVDM ASSY] ................................................................................................................ 45
3.15 WAVEFORMS [JACB ASSY] ................................................................................................................. 46
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 47
4.1 LOAB ASSY ............................................................................................................................................. 47
C
4.2 DVDM ASSY ............................................................................................................................................ 48
4.3 JACB ASSY ............................................................................................................................................. 50
4.4 SACDB ASSY .......................................................................................................................................... 54
4.5 SCRB ASSY ............................................................................................................................................ 55
4.6 FLKY and KEYB ASSYS ......................................................................................................................... 56
4.7 POWER SUPPLY UNIT............................................................................................................................ 58
4.8 ILKB ASSY............................................................................................................................................... 59
4.9 MSWB ASSY ........................................................................................................................................... 60
5. PCB PARTS LIST ........................................................................................................................................... 61
6. ADJUSTMENT ............................................................................................................................................... 68
D
6.4 TEST MODE ............................................................................................................................................ 70
6.5 MECHANISM ADJUSTMENT .................................................................................................................. 71
7. GENERAL INFORMATION ............................................................................................................................. 74
7.1 DIAGNOSIS ............................................................................................................................................. 74
7.1.6 ERROR DISPLAY ................................................................................................................................. 81
E
7.1.8 TROUBLE SHOOTING ......................................................................................................................... 86
7.1.9 DISASSEMBLY ..................................................................................................................................... 88
7.2 IC ............................................................................................................................................................. 97
7.4 CLEANING............................................................................................................................................. 153
8. PANEL FACILITIES ...................................................................................................................................... 154
F
4
1
2
DV-757Ai
2
3
3
4
4