Table Of Contents - Sony WM-EX900 Service Manual

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 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.

TABLE OF CONTENTS

1. SERVICING NOTE
1-1. Service Mode ...................................................................... 3
1-2. Rotational System ............................................................... 4
2. GENERAL
Location of controls ................................................................. 5
3. DISASSEMBLY
3-1. Cassette Lid Assy ................................................................ 6
3-2. Case ..................................................................................... 6
3-3. Ornament (OPEN) Block Assy ........................................... 7
3-4. SUB Board, LEAF Switch, MAIN Board ........................... 7
3-5. Belt (F1), Motor (F1) (M701) ............................................. 8
4. MECHANICAL ADJUSTMENTS ..............................
5. ELECTRICAL ADJUSTMENTS ...............................
6. DIAGRAMS
6-1. Block Diagram .................................................................. 10
6-2. Printed Wiring Boards ....................................................... 12
6-3. Schematic Diagram ........................................................... 15
6-4. Pin Description .................................................................. 18
7. EXPLODED VIEWS
7-1. Case Section ...................................................................... 21
7-2. Mechanism Deck Section .................................................. 22
8. ELECTRICAL PARTS LIST .....................................
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