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SECTION 1
SERVICING NOTES
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
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 ûC 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 HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
1. SERVICING NOTES ááááááááááááááááááááááááááááááááááááááááááááááááááá\
3
2. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááá 6
3. DISASSEMBLY
3-1. Case ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááááááááááááááá 8
3-2. Front Panel Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááá 8
3-3. Tape Mechanism Deck Section (TCM-230AWR2) áááááááááááá 9
3-4. CD Mechanism Deck section (CDM38LH-5BD32L) áááááááá 9
3-5. Main Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááááá 10
4. TEST MODE ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááá 11
5. MECHANICAL ADJUSTMENTS áááááááááááááááááááááááááá 13
6. ELECTRICAL ADJUSTMENTS ááááááááááááááááááááááááááá 13
7. DIAGRAMS
7-1. Circrit Boards Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\
á 18
7-2. Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááá 19
· CD Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááá 19
· Tape Deck Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááá 21
· Main Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááá 23
· Display/Key Con Section áááááááááááááááááááááááááááááááááááááááááááááá 25
7-3. Printed Wiring Board Ð CD Section Ð áááááááááááááááááááááááááááááá 29
7-4. Schematic Diagram ÐCD Section Ð áááááááááááááááááááááááááááááááááá 31
7-5. Printed Wiring Board Ð CD Motor Section Ð ááááááááááááááááááá 33
7-6. Schematic Diagram Ð CD Motor Section Ð áááááááááááááááááááááá 35
7-7. Printed Wirint Board Ð Tape Deck Section Ð ááááááááááááááááááá 37
7-8. Schematic Diagram Ð Tape Deck Section Ð ááááááááááááááááááááá 39
7-9. Printed Wiring Board Ð Leaf SW Section Ð ááááááááááááááááááááá 41
7-10. Schematic Diagram Ð Leaf SW Section Ð áááááááááááááááááááááááá 42
7-11. Printed Wiring Board Ð Main Section Ð ááááááááááááááááááááááááááá 43
7-12. Schematic Diagram Ð Main Section (1/4) Ð ááááááááááááááááááááá 45
7-13. Schematic Diagram Ð Main Section (2/4) Ð ááááááááááááááááááááá 47
7-14. Schematic Diagram Ð Main Section (3/4) Ð ááááááááááááááááááááá 49
7-15. Schematic Diagram Ð Main Section (4/4) Ð ááááááááááááááááááááá 51
7-16. Printed Wiring Board Ð Panel Section Ð ááááááááááááááááááááááááááá 53
7-17. Schematic Diagram Ð Panel Section Ð ááááááááááááááááááááááááááááá 55
7-18. Printed Wiring Board Ð AC Sec Standby Section Ð áááááááááá 57
7-19. Schematic Diagram Ð AC Sec Standby Section Ð áááááááááááá 59
7-20. Printed Wiring Board Ð CD SW Section Ð ááááááááááááááááááááááá 61
7-21. Schematic Diagram Ð CD SW Section Ð áááááááááááááááááááááááááá 61
7-22. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááá 63
7-23. IC PIN Function Description áááááááááááááááááááááááááááááááááááááááááááá 66
8. EXPLODED VIEWS
8-1. Case Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááá 69
8-2. Front Panel Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááá 70
8-3. Chassis Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááá 71
8-4. CD Mechanism Deck Section-1 (CDM38LH-5BD32L) áá 73
8-5. CD Mechanism Deck Section-2 (CDM38LH-5BD32L) áá 74
8-6. Base Unit Section (BU-5BD32L) ááááááááááááááááááááááááááááááááááááá 75
8-7. Tape Mechanism Deck Section-1 (TCM-230AWR2) áááááá 76
8-8. Tape Mechanism Deck Section-2 (TCM-230AWR2) áááááá 77
9. ELECTRICAL PARTS LIST ááááááááááááááááááááááááááááááááááá 78
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