Sony XR-4758RDS, Service Manual

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TABLE OF CONTENTS
1. GENERAL
Location of Controls ........................................................ 3
2. DISASSEMBLY
......................................................... 4
3. ASSEMBLY OF MECHANISM DECK
........... 6
4. MECHANICAL ADJUSTMENTS
....................... 12
5. ELECTRICAL ADJUSTMENTS
Test Mode ........................................................................ 12
Tape Deck Section ........................................................... 13
Tuner Section ................................................................... 13
6. DIAGRAMS
6-1. IC Pin Function Description ............................................ 16
6-2. Printed Wiring Boards – MAIN Section – ..................... 18
6-3. Schematic Diagram – MAIN Section – ........................... 21
6-4. Printed Wiring Board – KEY Section – ......................... 27
6-5. Schematic Diagram – KEY Section – ............................ 29
7. EXPLODED VIEWS
................................................ 34
8. ELECTRICAL PARTS LIST
................................ 38
SERVICING NOTES
Flexible Circuit Board Repairing
•
Keep the temperature of the soldering iron around 270 ˚ C 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.