Sony wm ex 660 service manual

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Ð 2 Ð TABLE OF CONTENTS 1. SERVICING NOTES ............................................... 3 2. GENERAL ................................................................... 5 3. DISASSEMBLY ......................................................... 8 4. MECHANICAL ADJUSTMENTS ....................... 13 5. ELECTRICAL ADJUSTMENTS ......................... 13 6. DIAGRAMS 6-1. Block Diagram ................................................................ 14 6-2. Printed Wiring Board ...................................................... 16 6-3. Schematic Diagram ......................................................... 19 6-4. IC Pin Function Description ........................................... 25 7. EXPLODED VIEWS ................................................ 27 8. ELECTRICAL PARTS LIST ............................... 30 Flexible Circuit Board Repairing ¥ Keep the temperature of the soldering iron around 270 ûC dur- ing repairing. ¥ Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). ¥ Be careful not to apply force on the conductor when soldering or unsoldering. 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. SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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 PUB- LISHED BY SONY.