Video Cassette Recorder
PVQ-V200
PV-V4020
VHQ-400
VHQ-40M
PV-V4520
PV-V4540
ORDER NO. MKE0001000C1
B3
2000 Matsushita-Kotobuki Electronics Industries
LTD. All rights reserved. Unauthorized copying and
distribution is a violation of law.
PVQ-V200 / PV-V4020 / VHQ-400 / VHQ-40M / PV-V4520 / PV-V4540
CONTENTS
Page Page
1 SAFETY PRECAUTIONS 3
2 PREVENTION OF ELECTRO-STATIC DISCHARGE (ESD) TO
ELECTROSTATICALLY SENSITIVE (ES) DEVICES
3 OPERATION GUIDE
4 SERVICE NOTES (PLEASE READ)
4.1. SERVICE NOTES
4.2. IC, TRANSISTOR AND CHIP PART INFORMATION
5 DISASSEMBLY/ASSEMBLY PROCEDURES
5.1. CABINET SECTION
5.2. MECHANISM SECTION
5.3. CASSETTE UP ASS'Y SECTION
6 ADJUSTMENT PROCEDURES
6.1. SERVICE FIXTURES AND TOOLS
6.2. MECHANICAL ADJUSTMENT
6.3. ELECTRICAL ADJUSTMENT
6.4. TEST POINTS AND CONTROL LOCATION
7 SCHEMATIC DIAGRAMS
7.1. SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT
NOTES
7.2. MAIN I (SYSTEM CONTROL/SERVO) SCHEMATIC
DIAGRAM
7.3. MAIN II (SIGNAL PROCESS/AUDIO) SCHEMATIC
DIAGRAM
7.4. MAIN III (POWER SUPPLY) SCHEMATIC DIAGRAM
7.5. MAIN IV (Hi-Fi) SCHEMATIC DIAGRAM (E, F)
7.6. MAIN V (OPERATION) SCHEMATIC DIAGRAM
7.7. MAIN VI (CYLINDER DRIVE/ADVANCE) SCHEMATIC
DIAGRAM
7.8. HEAD AMP (A) / AUDIO CONTROL HEAD SCHEMATIC
DIAGRAM
7.9. HEAD AMP (B, C, D) / AUDIO CONTROL HEAD
SCHEMATIC DIAGRAM
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7.10. Hi-Fi AUDIO/VIDEO HEAD AMP (E, F) / AUDIO
CONTROL HEAD SCHEMATIC DIAGRAM
7.11. CAPSTAN STATOR SCHEMATIC DIAGRAM
7.12. INTERCONNECTION SCHEMATIC DIAGRAM
7.13. SIGNAL WAVEFORM
7.14. VOLTAGE CHART
8 CIRCUIT BOARD LAYOUT
8.1. MAIN C.B.A. (A, C)
8.2. MAIN C.B.A. (B, D, E, F)
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.
9 BLOCK DIAGRAMS
9.1. POWER SUPPLY BLOCK DIAGRAM
9.2. VIDEO SIGNAL PATH BLOCK DIAGRAM
9.3. AUDIO SIGNAL PATH BLOCK DIAGRAM
9.4. Hi-Fi AUDIO SIGNAL PATH BLOCK DIAGRAM
9.5. SYSTEM CONTROL BLOCK DIAGRAM
9.6. SERVO BLOCK DIAGRAM
9.7. OPERATION BLOCK DIAGRAM
10 EXPLODED VIEWS
10.1. MECHANISM (TOP) SECTION
10.2. MECHANISM (BOTTOM) SECTION
10.3. CASSETTE UP COMPARTMENT SECTION
10.4. CHASSIS FRAME AND CASING PARTS SECTION
10.5. PACKING PARTS AND ACCESSORIES SECTION
11 REPLACEMENT PARTS LISTS
11.1. REPLACEMENT NOTES
11.2. MECHANICAL REPLACEMENT PARTS LIST
11.3. ELECTRICAL REPLACEMENT PARTS LIST
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