2
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.
TABLE OF CONTENTS
1.
GENERAL
Location of controls ........................................................
3
Setting the clock ..............................................................
3
Installation .......................................................................
4
Connections .....................................................................
5
2.
DISASSEMBLY
.........................................................
8
3.
ASSEMBLY OF MECHANISM DECK
........... 10
4.
MECHANICAL ADJUSTMENT
.......................... 13
5.
ELECTRICAL ADJUSTMENT
............................ 13
6.
DIAGRAMS
6-1. Block Diagram – TUNER Section – .............................. 14
6-2. Block Diagram – TAPE/MAIN Section – ...................... 15
6-3. Block Diagram – DISPLAY/
KEY CONTROL/BUS CONTROL/
POWER SUPPLY Section – ........................................... 16
6-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 17
6-5. Printed Wiring Board
– MAIN Board (Component Side) – .............................. 18
6-6. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................ 19
6-7. Schematic Diagram – MAIN Board (1/2) – ................... 20
6-8. Schematic Diagram – MAIN Board (2/2) – ................... 21
6-9. Printed Wiring Board – KEY Board – ........................... 22
6-10. Schematic Diagram – KEY Board – ............................. 23
6-11. Printed Wiring Board – SUB Board – ........................... 24
6-12. Schematic Diagram – SUB Board – .............................. 24
6-13. IC Pin Function Description ........................................... 28
7.
EXPLODED VIEWS
................................................ 32
8.
ELECTRICAL PARTS LIST
............................... 35
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