1 SAFETY PRECAUTIONS 3
2 PREVENTION OF ELECTRO-STATIC DISCHARGE (ESD) TO
ELECTROSTATICALLY SENSITIVE (ES) DEVICES 4
3 OPERATION GUIDE 5
4 SERVICE NOTES (PLEASE READ) 11
4.1. SERVICE NOTES 11
4.2. IC, TRANSISTOR AND CHIP PART INFORMATION 20
5 DISASSEMBLY/ASSEMBLY PROCEDURES 21
5.1. CABINET SECTION 21
5.2. MECHANISM SECTION 24
5.3. CASSETTE UP ASS'Y SECTION 36
6 ADJUSTMENT PROCEDURES 38
6.1. SERVICE FIXTURES AND TOOLS 38
6.2. MECHANICAL ADJUSTMENT 39
6.3. ELECTRICAL ADJUSTMENT 44
6.4. TEST POINTS AND CONTROL LOCATION 46
7 SCHEMATIC DIAGRAMS 47
7.1. SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT
NOTES 47
7.2. MAIN I (SYSTEM CONTROL/SERVO) SCHEMATIC
DIAGRAM 48
7.3. MAIN II (SIGNAL PROCESS/AUDIO) SCHEMATIC
DIAGRAM 49
7.4. MAIN III (POWER SUPPLY) SCHEMATIC DIAGRAM 51
7.5. MAIN IV (Hi-Fi) SCHEMATIC DIAGRAM (E, F) 52
7.6. MAIN V (OPERATION) SCHEMATIC DIAGRAM 54
7.7. MAIN VI (CYLINDER DRIVE/ADVANCE) SCHEMATIC
DIAGRAM 55
7.8. HEAD AMP (A) / AUDIO CONTROL HEAD SCHEMATIC
DIAGRAM 56
7.9. HEAD AMP (B, C, D) / AUDIO CONTROL HEAD
SCHEMATIC DIAGRAM 57
7.10. Hi-Fi AUDIO/VIDEO HEAD AMP (E, F) / AUDIO
CONTROL HEAD SCHEMATIC DIAGRAM 58
7.11. CAPSTAN STATOR SCHEMATIC DIAGRAM 59
7.12. INTERCONNECTION SCHEMATIC DIAGRAM 60
7.13. SIGNAL WAVEFORM 61
7.14. VOLTAGE CHART 63
8 CIRCUIT BOARD LAYOUT 67
8.1. MAIN C.B.A. (A, C) 67
8.2. MAIN C.B.A. (B, D, E, F) 68
8.3. HEAD AMP C.B.A. (A, B, C, D) / Hi-Fi AUDIO/VIDEO
HEAD AMP C.B.A. (E, F) / CAPSTAN STATOR / AUDIO
CONTROL HEAD P.C.B. 69
9 BLOCK DIAGRAMS 71
9.1. POWER SUPPLY BLOCK DIAGRAM 71
9.2. VIDEO SIGNAL PATH BLOCK DIAGRAM 72
9.3. AUDIO SIGNAL PATH BLOCK DIAGRAM 73
9.4. Hi-Fi AUDIO SIGNAL PATH BLOCK DIAGRAM 74
9.5. SYSTEM CONTROL BLOCK DIAGRAM 75
9.6. SERVO BLOCK DIAGRAM 76
9.7. OPERATION BLOCK DIAGRAM 77
10 EXPLODED VIEWS 79
10.1. MECHANISM (TOP) SECTION 79
10.2. MECHANISM (BOTTOM) SECTION 80
10.3. CASSETTE UP COMPARTMENT SECTION 81
10.4. CHASSIS FRAME AND CASING PARTS SECTION 82
10.5. PACKING PARTS AND ACCESSORIES SECTION 83
11 REPLACEMENT PARTS LISTS 84
11.1. REPLACEMENT NOTES 84
11.2. MECHANICAL REPLACEMENT PARTS LIST 86
11.3. ELECTRICAL REPLACEMENT PARTS LIST 87
CONTENTS
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PVQ-V200 / PV-V4020 / VHQ-400 / VHQ-40M / PV-V4520 / PV-V4540
