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TABLE OF CONTENTS
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron aroud 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
damaged by heat.
1. GENERAL ······································································ 3
2. DISASSEMBLY
2-1. Cabinet (Front) Assy ·························································· 5
2-2. Main Board········································································· 6
2-3. Mechanism Deck ································································ 6
2-4. Cassette Lid Sub Assy ························································ 7
2-5. Display Board····································································· 7
3. MECHANICAL ADJUSTMENT······························· 8
4. ELECTRICAL ADJUSTMENT ································ 8
5. DIAGRAMS
IC Block Diagrams··························································· 11
5-1. Block Diagram ································································· 13
5-2. Printed Wiring Board -Main Section- ······························ 15
5-3. Schematic Diagram -Main Section- ································· 17
5-4.
Printed Wiring Board -Display Section-(FX483/FX485
)··19
5-5. Schematic Diagram
-Display Section-(FX483/FX485
) ···· 21
5-6.
Printed Wiring Board -Display Section-(FX487
) ·············· 23
5-7. Schematic Diagram
-Display Section-(FX487
) ················ 25
5-8. IC Pin Function ································································ 27
6. EXPLODED VIEWS
6-1. Cassette Lid Section ························································· 29
6-2. Cabinet Section································································· 31
6-3. Mechanism Deck Section ················································· 32
7. ELECTRICAL PARTS LIST ··································· 33
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