Table Of Contents - Sony WM-EX527 Service Manual

WM-EX527
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TABLE OF CONTENTS

1. SERVICING NOTES
2. GENERAL
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3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 6
3-2. Cassette Lid Assy ............................................................ 6
3-3. Case Block Assy .............................................................. 7
3-4. Reel Ornament Block Assy ............................................. 7
3-5. Battery Holder ................................................................. 8
3-6. Belt (F2) .......................................................................... 8
3-7. MAIN Board ................................................................... 9
3-8. Motor (Capstan/Reel) (M901) ........................................ 10
3-9. Holder (FS) Section ........................................................ 10
3-10. Pinch Lever (N) Assy, Pinch Lever (R) Assy ................. 11
3-11. Magnetic Head (Playback) (HP901) .............................. 11
4. MECHANICAL ADJUSTMENTS
5. ELECTRICAL ADJUSTMENTS
6. DIAGRAMS
6-1. Block Diagram ................................................................ 12
6-2. Note for Printed Wiring Board and
Schematic Diagram ......................................................... 13
6-3. Printed Wiring Board ...................................................... 14
6-4. Schematic Diagram ......................................................... 15
6-5. IC Pin Function Description ........................................... 16
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7. EXPLODED VIEWS
7-1. Case Section .................................................................... 18
7-2. Mechanism Deck Section (MT-WMEX505-162) .......... 19
8. ELECTRICAL PARTS LIST
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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.
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