Sony Walkman WM-FX571, Service Manual

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TABLE OF CONTENTS
1. GENERAL
.................................................................... 3
2. SERVICE NOTE ..........................................................
3
3. DISASSEMBLY
3-1. Case Assy ............................................................................ 4
3-2. Tuner Board ........................................................................ 4
3-3. Audio Board ........................................................................ 5
3-4. Cassette Lid Assy ................................................................ 5
3-5. Tape Mechanism Deck ........................................................ 6
4. MECHANICAL ADJUSTMENTS
..............................
7
5. ELECTRICAL ADJUSTMENTS
Tape Section ............................................................................ 7
Tuner Section ........................................................................... 8
6. DIAGRAMS
6-1. Block Diagram .................................................................... 9
6-2. IC Pin Description ............................................................. 11
6-3. Printed Wiring Boards –Tuner Section– ........................... 13
6-4. Schematic Diagram –Tuner Section– ................................ 17
6-5. Schematic Diagram –Audio Section– ............................... 20
6-6. Printed Wiring Board –Audio Section– ............................ 23
7. EXPLODED VIEWS
7-1. Cabinet Section ................................................................. 29
7-2. Audio and Tuner Board Section ........................................ 30
7-3. Tape Mechanism Section .................................................. 31
8. ELECTRICAL PARTS LIST
....................................
32
Flexible Circuit Board Repairing
•
Keep the temperature of the soldering iron around 270˚C during
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.