Table Of Contents - Sanyo VHR-VK210A Service Manual

SECTION 1
SUMMARY
KEY TO ABBREVIATIONS . . . . . . . . . . . . . . . . 1-1
IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . 1-2
• Precautions During Servicing
SAFETY CHECK AFTER SERVICING . . . . . . . . 1-3
• Insulation resistance test
• Dielectric strength test
• Clearance distance
• Leakage current test
PROPOSAL FOR APPLYING SHORT
PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
SERVICE NOTICE ON REPLACING EEPROM . .1-5
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 1-6
LOCATION OF CUSTOMER CONTROLS . . . . . 1-7
SECTION 2
CABINET & MAIN CHASSIS
SERVICE METHOD . . . . . . . . . . . . . . . . . . . . . 2-1
Electrical Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . 2-2
1. Cabinet & Main Frame Section . . . . . . . . . . . . . 2-2
2. Packing & Accessory Section
3. Remote Control Section
SECTION 3
ELECTRICAL
ELECTRICAL ADJUSTMENT POINTS
ARRANGEMENT . . . . . . . . . . . . . . . . . . . . . . . .3-1
ELECTRICAL ADJUSTMENT PROCEDURES . . 3-2
1. Servo Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
ELECTRICAL TROUBLESHOOTING GUIDE . . . 3-3
1. Power Circuit(SMPS) . . . . . . . . . . . . . . . . . . . . . 3-3
2. Servo Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
3. System & Front Panel Circuit . . . . . . . . . . . . . . . .3-9
4. Y/C Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
5. Tuner/IF Circuit . . . . . . . . . . . . . . . . . . . . . . . . .3-15
6. Hi-Fi Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-18

TABLE OF CONTENTS

. . . . . . . . . . . . . . 2-3
. . . . . . . . . . . . . . . . . . 2-4
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . .3-20
1. Power Block Diagram . . . . . . . . . . . . . . . . . . . .3-20
2. Tuner/IF, NICAM & A2 Block Diagram . . . . . . . .3-22
3. Y/C Block Diagram . . . . . . . . . . . . . . . . . . . . . .3-24
4. System Block Diagram . . . . . . . . . . . . . . . . . . .3-26
5. Hi-Fi Block Diagram . . . . . . . . . . . . . . . . . . . . .3-28
CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . .3-30
1. Power, Tuner, NICAM/A2 Circuit Diagram . . . . .3-30
2. A/V Circuit Diagram . . . . . . . . . . . . . . . . . . . . . .3-32
3. System Circuit Diagram . . . . . . . . . . . . . . . . . . .3-35
4. Hi-Fi JACK Circuit Diagram . . . . . . . . . . . . . . . .3-38
5. SHUTTLE & KEY Circuit Diagram . . . . . . . . . . .3-40
PRINTED CIRCUIT BOARD DIAGRAMS . . . . .3-42
1. MAIN P.C.Board . . . . . . . . . . . . . . . . . . . . . . . .3-42
2. KEY 1 P.C.Board . . . . . . . . . . . . . . . . . . . . . . . .3-44
3. KEY 2 P.C.Board . . . . . . . . . . . . . . . . . . . . . . . .3-45
SECTION 4
MECHANISM
NOTE) The table of contents for this section is edited
NOTE) separately.
SECTION 5
REPLACEMENT PARTS LIST
• Mechanical Section . . . . . . . . . . . . . . . . . . . . . . . .5-1
• Electrical Section . . . . . . . . . . . . . . . . . . . . . . . . .5-6