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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 ............................... 28Notes 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 ΛC 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.
