Hitachi DVPF 2 E Service Manual

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CONTENTS SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . E1-1-1 LASER BEAM SAFETY PRECAUTIONS . . . . . . . . . . E1-2-1 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . E1-3-1 Product Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . E1-3-1 Precautions during Servicing . . . . . . . . . . . . . . . . . . . E1-3-1 Safety Check after Servicing . . . . . . . . . . . . . . . . . . . E1-3-2 STANDARD NOTES FOR SERVICING . . . . . . . . . . . E1-4-1 Circuit Board Indications . . . . . . . . . . . . . . . . . . . . . . E1-4-1 Instructions for Connectors . . . . . . . . . . . . . . . . . . . . E1-4-1 How to Remove/Install Flat Pack-IC . . . . . . . . . . . . . E1-4-1 Instructions for Handling Semi-conductors . . . . . . . . E1-4-3 PREPARATION FOR SERVICING . . . . . . . . . . . . . . . E1-5-1 How to Enter the Service Mode . . . . . . . . . . . . . . . . . E1-5-1 OPERATING CONTROLS AND FUNCTIONS . . . . . . E1-6-1 FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . . . E1-7-1 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . E1-8-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . E2-1-1 1. Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . . E2-1-1 2. Disassembly Method . . . . . . . . . . . . . . . . . . . . . . . E2-1-1 DISASSEMBLY/ASSEMBLY PROCEDURES OF DECK MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . E2-2-1 ALIGNMENT PROCEDURES OF MECHANISM . . . . E2-3-1 ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . . E2-4-1 Test Equipment Required . . . . . . . . . . . . . . . . . . . . . E2-4-1 Head Switching Position Adjustment . . . . . . . . . . . . . E2-4-1 FIXTURE AND TAPE FOR ADJUSTMENT . . . . . . . . E2-5-1 How To Use The Fixtures And Tape . . . . . . . . . . . . . E2-5-1 MECHANICAL ALIGNMENT PROCEDURES . . . . . . E2-6-1 Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . E2-6-1 1. Tape Interchangeability Alignment . . . . . . . . . . . . . E2-6-2 1-A.Preliminary/Final Checking and Alignment of Tape Path . . . . . . . . . . . . . . . . . . E2-6-3 1-B.X Value Alignment . . . . . . . . . . . . . . . . . . . . . . . E2-6-3 1-C.Checking/Adjustment of Envelope Waveform . . E2-6-4 1-D.Azimuth Alignment of Audio/Control/Erase Head . . . . . . . . . . . . . . . . E2-6-4 STANDARD MAINTENANCE . . . . . . . . . . . . . . . . . . . E2-7-1 Service Schedule of Components . . . . . . . . . . . . . . . E2-7-1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E2-7-2 EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1 Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1 Deck Mechanism View 1 . . . . . . . . . . . . . . . . . . . . . . . 3-1-2 Deck Mechanism View 2 . . . . . . . . . . . . . . . . . . . . . . . 3-1-2 Deck Mechanism View 3 . . . . . . . . . . . . . . . . . . . . . . . 3-1-3 REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . 3-2-1 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-1 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-3 SCHEMATIC DIAGRAMS/CBAS AND TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-1 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-3 Main 1/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-4 Main 2/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-5 Main 3/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-6 Main 4/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-7 Main 5/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-8 Main 6/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-9 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-10 Main 7/8 Schematic Diagram . . . . . . . . . . . . . . . . . . 4-1-11 Main 8/8 Schematic Diagram . . . . . . . . . . . . . . . . . . 4-1-12 Power Supply Schematic Diagram . . . . . . . . . . . . . . 4-1-13 Function Schematic Diagram . . . . . . . . . . . . . . . . . . 4-1-14 Front Jack Schematic Diagram . . . . . . . . . . . . . . . . . 4-1-15 AFV Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . 4-1-16 Main CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-17 Main CBA Bottom View . . . . . . . . . . . . . . . . . . . . . . . 4-1-18 Power Supply CBA Top/Bottom View . . . . . . . . . . . . 4-1-19 Function CBA Top/Bottom View . . . . . . . . . . . . . . . . 4-1-20 Front Jack CBA Top/Bottom View . . . . . . . . . . . . . . . 4-1-21 AFV CBA Top/Bottom View. . . . . . . . . . . . . . . . . . . . 4-1-22 Junction-A CBA Top/Bottom View. . . . . . . . . . . . . . . 4-1-22 Junction-B CBA Top/Bottom View. . . . . . . . . . . . . . . 4-1-22 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-23 DVD Main 1/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-24 DVD Main 2/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-25 DVD Main 3/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-26 DVD Main 4/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-27 BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-1 Servo/System Control Block Diagram . . . . . . . . . . . . . 4-2-1 Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-2 Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-3 Hi-Fi Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . 4-2-4 Power Supply Block Diagram . . . . . . . . . . . . . . . . . . . 4-2-5 DVD System Control Block Diagram . . . . . . . . . . . . . . 4-2-6 RF Signal Process/Servo Block Diagram . . . . . . . . . . 4-2-7 DVD Signal Process Block Diagram . . . . . . . . . . . . . . 4-2-8 DVD Video Block Diagram . . . . . . . . . . . . . . . . . . . . . 4-2-9 DVD Audio Block Diagram . . . . . . . . . . . . . . . . . . . . 4-2-10 SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . 4-3-1 IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . 4-4-1 LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 4-5-1 CHAPTER 1 GENERAL INFORMATION CHAPTER 2 DISASSEMBLY AND ADJUSTMENT CHAPTER 3 EXPLODED VIEWS AND PARTS LIST CHAPTER 4 SCHEMATIC AND BLOCK DIAGRAMS/ CBAS

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E1-1-1 SPECIFICATIONS Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories. "DTS" and "DTS Digital Out" are trademarks of Digital Theater Systems Inc. CHAPTER 1 GENERAL INFORMATION Product type:DVD/VCR player with Video Cassette Recorder Discs: DVD video Audio CD Video Cassette tape Converter output: UHF Channel 22 to 69. Power source: 220-240V +/- 10%, 50Hz +/- 0.5% Power consumption: 30 W (standby: 5.7 W) Operating temperature: 5˚ C to 40˚C Dimensions: W 17-1/8" (435 mm) H 4" (99 mm) D 10-1/2" (266 mm) Weight: 8.8 lbs (4 kg) Designs and specifications are subject to change without notice.

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4-2-3 Audio Block Diagram RECAMP 100 3 AUTOBIAS 2 1 +5V +5V Q404 Q406 BIAS OSC Q403 N-A-PB TO Hi-Fi AUDIO BLOCK N-A-REC Q401 (PB=ON) Q402 (PB=ON) Q405 SWITCHING D-REC-OFF 5 EQAMP 9 8 7 LINEAMP REC-ON AUDIO HD-SWCONTROL MUTE 11 6 PB-ON SP/LP-ON P TUNER IN2 IN1 R ALCDET ALC IC301(AUDIO SIGNAL PROCESS) 15 13 17 4 A-PB/REC CL504 3 A-COM 1 AE-H 2 FE-H A-PB/REC 4 A-COM 3 AE-H 1 FE-H 2 CL287 AUDIOHEAD AUDIO ERASE HEAD ACE HEAD ASSEMBLY FE HEAD 2 FE-H 1 FE-H-GND CL501 MAIN CBA PB-AUDIO SIGNAL REC-AUDIO SIGNAL Mode : SP/REC 71 A-MUTE-H IIC-BUS-SCL IIC-BUS-SDA TO SERVO/SYSTEM CONTROL BLOCK FULL ERASE HEAD 68 69 SERIALDECODER (DECK ASSEMBLY) 12 16 INV ATT