Sony sb v 55 a service manual

Page 1

2 SB-V55A TABLE OF CONTENTS 1. GENERAL Locating the parts and controls ............................................... 3 Connections ............................................................................. 3 Connecting the power source .................................................. 3 2. DISASSEMBLY 2-1. Cover, Upper ....................................................................... 4 2-2. Main Board ......................................................................... 4 3. DIAGRAMS 3-1. IC Pin Description ............................................................... 5 3-2. Block Diagram -“Main Section-“ .......................................... 6 3-3. Printed Wiring Board -“Main Section-“ ................................ 8 3-4. Schematic Diagram -“Main Section-“ ................................. 10 4. EXPLODED VIEWS 4-1. Main Section ..................................................................... 13 5. ELECTRICAL PARTS LIST ........................................ 14 SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. Notes on Chip Component Replacement -Never reuse a disconnected chip component. -Notice that the minus side of a tantalum capacitor may be dam- aged by heat.