Hitachi DV-PF3A(S), Service Manual

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CONTENTS
1 CAUTIONS FOR SAFETY IN PERFORMING
REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1-1 LASER BEAM SAFETY PRECAUTIONS . . . . . . . . 1-1
1-2 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . 1-2
1-2-1 Product Safety Notice . . . . . . . . . . . . . . . . . . . . . 1-2
1-2-2 Precautions during Servicing. . . . . . . . . . . . . . . . 1-2
1-2-3 Safety Check after Servicing . . . . . . . . . . . . . . . . 1-3
1-3 STANDARD NOTES FOR SERVICING. . . . . . . . . . 1-4
1-3-1 Circuit Board Indications . . . . . . . . . . . . . . . . . . . 1-4
1-3-2 Instructions for Connectors . . . . . . . . . . . . . . . . . 1-4
1-3-3 How to Remove/Install Flat Pack-IC . . . . . . . . . . 1-4
1-3-4 Instructions for Handling Semi-conductors . . . . . 1-6
1-4 NOTES WHEN USING SERVICE MANUAL . . . . . . 1-7
2 GENERAL INFORMATION . . . . . . . . . . . . . . . . .2-1
2-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 COMPARISON OF MODELS . . . . . . . . . . . . . . . . . 2-2
2-2-1 VCR Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2-2 DVD Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-3 OPERATING CONTROLS AND FUNCTIONS . . . . 2-4
3 MAINTENANCE AND INSPECTION. . . . . . . . . .3-1
3-1 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . 3-1
3-1-1 Power Supply Section . . . . . . . . . . . . . . . . . . . . . 3-1
3-1-2 DVD Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3-1-3 VCR Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3-2 FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . 3-15
3-2-1 How to Update the Firmware Version . . . . . . . . 3-15
3-2-2 How to Verify the Firmware Version . . . . . . . . . 3-15
3-3 STANDARD MAINTENANCE . . . . . . . . . . . . . . . . 3-16
3-3-1 Service Schedule of Components . . . . . . . . . . . 3-16
3-3-2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
4 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . . 4-1
4-1-1 Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . 4-1
4-1-2 Disassembly Method . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 DISASSEMBLY/ASSEMBLY PROCEDURES
OF DECK MECHANISM . . . . . . . . . . . . . . . . . . . . . 4-6
4-3 ALIGNMENT PROCEDURES OF MECHANISM. . 4-13
5 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5-1 PREPARATION FOR SERVICING . . . . . . . . . . . . . 5-1
5-1-1 How to Enter the Service Mode. . . . . . . . . . . . . . 5-1
5-2 FIXTURE AND TAPE FOR ADJUSTMENT . . . . . . . 5-2
5-2-1 How to Use The Fixtures And Tape. . . . . . . . . . . 5-2
5-3 ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . 5-3
5-3-1 Test Equipment Required . . . . . . . . . . . . . . . . . . 5-3
5-3-2 Head Switching Position Adjustment. . . . . . . . . . 5-3
5-4 MECHANICAL ALIGNMENT PROCEDURES . . . . . 5-4
5-4-1 Service Information . . . . . . . . . . . . . . . . . . . . . . . 5-4
5-4-2 Tape Interchangeability Alignment . . . . . . . . . . . 5-5
1-A. Preliminary/Final Checking and
Alignment of Tape Path . . . . . . . . . . . . . . . . . . . . 5-6
1-B. X Value Alignment . . . . . . . . . . . . . . . . . . . . . . . . 5-6
1-C. Checking/Adjustment of Envelope Waveform . . . 5-7
1-D. Azimuth Alignment of
Audio/Control/Erase Head. . . . . . . . . . . . . . . . . . 5-7
6 EXPLODED VIEWS AND PARTS LIST . . . . . . 6-1
6-1 EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6-1-1 Cabinet Section. . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6-1-2 Deck Mechanism View 1 Section . . . . . . . . . . . . .6-2
6-1-3 Deck Mechanism View 2 Section . . . . . . . . . . . . .6-2
6-1-4 Deck Mechanism View 3 Section . . . . . . . . . . . . .6-3
6-2 REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . .6-4
6-2-1 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . .6-4
6-2-2 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . .6-5
SCHEMATIC, CIRCUIT BOARD AND BLOCK
DIAGRAMS
1 WIRING DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 VCR Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-2 DVD Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . 3
2-1 Main 1/9 Schematic Diagram . . . . . . . . . . . . . . . . . . 3
2-2 Main 2/9 & Sensor Schematic Diagrams. . . . . . . . . . 4
2-3 Main 3/9 Schematic Diagram . . . . . . . . . . . . . . . . . . 5
2-4 Main 4/9 Schematic Diagram . . . . . . . . . . . . . . . . . . 6
2-5 Main 5/9 Schematic Diagram . . . . . . . . . . . . . . . . . . 7
2-6 Main 6/9 Schematic Diagram . . . . . . . . . . . . . . . . . . 8
2-7 Main 7/9 Schematic Diagram . . . . . . . . . . . . . . . . . . 9
2-8 Main 8/9 & DVD OPEN/CLOSE Schematic
Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2-9 Main 9/9 Schematic Diagram . . . . . . . . . . . . . . . . . 11
2-10 Power Supply & Junction Schematic Diagrams . . . 12
2-11 Jack Schematic Diagram. . . . . . . . . . . . . . . . . . . . . 13
2-12 Function Schematic Diagram . . . . . . . . . . . . . . . . . 14
2-13 AFV Schematic Diagram . . . . . . . . . . . . . . . . . . . . . 15
2-14 DVD Main 1/3 Schematic Diagram . . . . . . . . . . . . . 16
2-15 DVD Main 2/3 Schematic Diagram . . . . . . . . . . . . . 17
2-16 DVD Main 3/3 Schematic Diagram . . . . . . . . . . . . . 19
3 WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4 CIRCUIT BOARD DIAGRAMS . . . . . . . . . . . . . . . . . . . 21
4-1 Main CBA Top View & Sensor CBA Top View . . . . . 21
4-2 Main CBA Bottom View . . . . . . . . . . . . . . . . . . . . . . 22
4-3 Function CBA Top/Bottom View &
DVD OPEN/CLOSE CBA Top/Bottom View . . . . . . 23
4-4 Power Supply CBA Top/Bottom View &
Junction CBA Top/Bottom View . . . . . . . . . . . . . . . . .24
4-5 Jack CBA Top/Bottom View &
AFV CBA Top/Bottom View . . . . . . . . . . . . . . . . . . . .25
5 BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5-1 Servo/System Control Block Diagram . . . . . . . . . . . 26
5-2 Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . 27
5-3 Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . 28
5-4 Hi-Fi Audio Block Diagram . . . . . . . . . . . . . . . . . . . 29
5-5 Power Supply Block Diagram . . . . . . . . . . . . . . . . . 30
5-6 DVD System Control/Servo Block Diagram . . . . . . 31
5-7 Digital Signal Process Block Diagram . . . . . . . . . . . 32
5-8 DVD Video / Audio Block Diagram . . . . . . . . . . . . . 33
6 SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . 34
7 IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . 39
8 LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 42