Table Of Contents - Hitachi SM9303 Service Manual

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
2 GENERAL INFORMATION . . . . . . . . . . . . . . . . .2-1
2-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 COMPARISON OF MODELS . . . . . . . . . . . . . . . . . 2-2
2-3 OPERATING CONTROLS AND FUNCTIONS . . . . 2-4
3 MAINTENANCE AND INSPECTION. . . . . . . . . .3-1
3-1 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . . 3-7
3-2-1 How to Update the Firmware Version . . . . . . . . . 3-7
3-2-2 How to Verify the Firmware Version . . . . . . . . . . 3-7
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
5 EXPLODED VIEW AND PARTS LIST . . . . . . . .5-1
5-1 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2 REPLACEMENT PARTS LIST. . . . . . . . . . . . . . . . . 5-2
5-2-1 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . 5-2
5-2-2 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . 5-3
CONTENTS
SCHEMATIC AND BLOCK DIAGRAMS/CBA'S
1 SCHEMATIC DIAGRAMS/CBA'S AND TEST POINTS . 1
2 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . 4
3-1 DVD Main 1/3 Schematic Diagram . . . . . . . . . . . . . . . 4
3-2 DVD Main 2/3 Schematic Diagram . . . . . . . . . . . . . . . 5
3-3 DVD Main 3/3 Schematic Diagram . . . . . . . . . . . . . . . 7
3-4 AV 1/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . 8
3-5 AV 2/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . 9
3-6 AV 3/3 & Function Schematic Diagram . . . . . . . . . . . 10
4 WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 CIRCUIT BOARD DIAGRAMS . . . . . . . . . . . . . . . . . . . 12
5-1 AV CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5-2 AV CBA Bottom View. . . . . . . . . . . . . . . . . . . . . . . . . 13
5-3 Function CBA Top/Bottom View . . . . . . . . . . . . . . . . 14
6 BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6-1 System Control/Servo Block Diagram . . . . . . . . . . . . 15
6-2 Digital Signal Process Block Diagram . . . . . . . . . . . . 16
6-3 Video/Audio Block Diagram . . . . . . . . . . . . . . . . . . . . 17
6-4 Power Supply Block Diagram . . . . . . . . . . . . . . . . . . 18
7 SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . 19
8 IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . 20
9 LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 21