Hitachi DVP 325 U Service Manual

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Hitachi DVP 325 U Service Manual

Extracted text from Hitachi DVP 325 U Service Manual (Ocr-read)

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CONTENTS SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1-1 COMPARISON OF MODELS . . . . . . . . . . . . . . . . . . . . . . .1-2-1 LASER BEAM SAFETY PRECAUTIONS. . . . . . . . . . . . . .1-3-1 IMPORTANT SAFETY PRECAUTIONS. . . . . . . . . . . . . . .1-4-1 Product Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4-1 Precautions during Servicing . . . . . . . . . . . . . . . . . . . . . .1-4-1 Safety Check after Servicing . . . . . . . . . . . . . . . . . . . . . .1-4-2 STANDARD NOTES FOR SERVICING . . . . . . . . . . . . . . .1-5-1 Circuit Board Indications . . . . . . . . . . . . . . . . . . . . . . . . .1-5-1 Instructions for Connectors . . . . . . . . . . . . . . . . . . . . . . .1-5-1 How to Remove/Install Flat Pack-IC . . . . . . . . . . . . . . . .1-5-1 Instructions for Handling Semi-conductors . . . . . . . . . . .1-5-3 ORERATING CONTROLS AND FUNCTIONS. . . . . . . . . .1-6-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . . . .1-7-1 1. Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . . . . .1-7-1 2. Disassembly Method . . . . . . . . . . . . . . . . . . . . . . . . . .1-7-1 ROM RENEWAL MODE . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8-1 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9-1 BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-1 System Control Block Diagram . . . . . . . . . . . . . . . . . . .1-10-1 RF Signal Process/Servo Block Diagram . . . . . . . . . . .1-10-2 DVD Signal Process Block Diagram . . . . . . . . . . . . . . .1-10-3 Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-4 Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-5 Power Supply Block Diagram . . . . . . . . . . . . . . . . . . . .1-10-6 SCHEMATIC DIAGRAMS/CBAS AND TEST POINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11-1 DVD Main 1/4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-3 DVD Main 2/4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-4 DVD Main 3/4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-5 DVD Main 4/4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-6 AV 1/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . .1-11-7 AV 2/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . .1-11-8 AV 3/3, Function & Switch Schematic Diagram . . . . . .1-11-10 AV CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11-11 AV CBA Bottom View. . . . . . . . . . . . . . . . . . . . . . . . . .1-11-12 Function CBA Top View . . . . . . . . . . . . . . . . . . . . . . . .1-11-13 Function CBA Bottom View . . . . . . . . . . . . . . . . . . . . .1-11-13 Switch CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . .1-11-13 Switch CBA Bottom View . . . . . . . . . . . . . . . . . . . . . . .1-11-13 WAVEFORMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11-9 WIRING DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12-1 SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . . .1-13-1 IC PIN FUNCTION DESCRIPTIONS. . . . . . . . . . . . . . . . .1-14-1 LEAD IDENTIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . .1-15-1 EXPLODED VIEWS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-16-1 MECHANICAL PARTS LIST. . . . . . . . . . . . . . . . . . . . . . .1-17-1 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . .1-18-1

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1-1-1 SPECIFICATIONS Manufatured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works. (1992-1997 Dolby Laboratories, Inc. All rights reserved.) "DTS" and "DTS Digital Out" are trademarks of Digital Theater Systems Inc.