Sony WM-FX522 User Manual

2
WM-FX522
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 3
2. GENERAL ................................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 6
3-2. Cassette Lid Assy ............................................................ 6
3-3. Case Block Assy.............................................................. 7
3-4. Ornament Reel ................................................................ 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) Assy............................................................. 10
3-10. Pinch Lever (N) Assy, Pinch Lever (R) Assy ................. 11
3-11. Magnetic Head (Playback) (HP901) .............................. 11
4. MECHANICAL ADJUSTMENTS ....................... 12
5. ELECTRICAL ADJUSTMENTS......................... 12
6. DIAGRAMS
6-1. Block Diagram – TUNER Section – ............................. 15
6-2. Block Diagram – MAIN Section – ................................ 16
6-3. Note for Printed Wiring Board
and Schematic Diagrams ................................................ 17
6-4. Schematic Diagram – MAIN Board (1/2) – .................. 18
6-5. Schematic Diagram – MAIN Board (2/2) – .................. 19
6-6. Printed Wiring Board ...................................................... 20
6-7. IC Pin Function Description ........................................... 23
7. EXPLODED VIEWS
7-1. Case Section .................................................................... 25
7-2. Bracket, MAIN Board Section ....................................... 26
7-3. Mechanism Deck Section (MT-WMEX505-162) .......... 27
8. ELECTRICAL PARTS LIST ............................... 28
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.
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.

Sony WM-FX522 Specifications

General

Brand	Sony
Model	WM-FX522
Category	Cassette Player
Language	English