– 3 –
TABLE OF CONTENTS
7-12. Schematic Diagram – Main (1/5) Section – ..................... 53
7-13. Schematic Diagram – Main (2/5) Section – ..................... 55
7-14. Schematic Diagram – Main (3/5) Section – ..................... 57
7-15. Schematic Diagram – Main (4/5) Section – ..................... 59
7-16. Schematic Diagram – Main (5/5) Section – ..................... 61
7-17. Printed Wiring Board – Power Section – ......................... 63
7-18. Schematic Diagram – Power (1/2) Section – ................... 65
7-19. Schematic Diagram – Power (2/2) Section – ................... 67
7-20. Schematic Diagram – Leaf SW Section – ........................ 69
7-21. Printed Wiring Board – Leaf SW Section – ..................... 69
7-22. Schematic Diagram – Panel FL Section – ........................ 71
7-23. Printed Wiring Board – Panel FL Section – ..................... 73
7-24. Schematic Diagram – Panel VR Section – ....................... 75
7-25. Printed Wiring Board – Panel VR Section – .................... 77
7-26. Schematic Diagram – TC Panel Section – ....................... 79
7-27. Printed Wiring Board – TC Panel Section – ..................... 81
7-28. Schematic Diagram – CD Panel Section – ....................... 83
7-29. Printed Wiring Board – CD Panel Section – .................... 85
7-30. Schematic Diagram – CD Motor Section – ...................... 87
7-31. Printed Wiring Board – CD Motor Section – ................... 89
7-32. Schematic Diagram – Jack Section – ............................... 91
7-33. Printed Wiring Board – Jack Section – ............................ 93
7-34. Schematic Diagram – Trans Section – ............................. 95
7-35. Printed Wiring Board – Trans Section – ........................... 97
7-36. IC Block Diagrams ........................................................... 98
7-37. IC Pin Functions ............................................................. 101
8. EXPLODED VIEWS
8-1. Case and Back Panel Section ............................................ 111
8-2. Front Panel Section 1 ........................................................ 112
8-3. Front Panel Section 2 ........................................................ 113
8-4. Chassis Section ................................................................. 114
8-5. TC Mechanism Section 1 (TCM230AWR2/230PWR2) ... 115
8-6. TC Mechanism Section 2 (TCM230AWR2/230PWR2) ... 116
8-7. CD Mechanism Section (CDM37L-5BD34L) .................. 117
8-8. Base Unit Section (BU-5BD34L) ..................................... 118
9. ELECTRICAL PARTS LIST
.................................. 119
1. SERVICING NOTE
.......................................................... 4
2. GENERAL
....................................................................
6
3. DISASSEMBLY
3-1. Front Panel ............................................................................ 8
3-2. Main Board ........................................................................... 8
3-3. Sub Panel .............................................................................. 9
3-4. CD-L/CD-R Board and CD Lid Assembly ........................... 9
3-5. Tape Mechanism Deck and Cassette Lid ............................ 10
3-6. CD Mechanism Deck .......................................................... 10
3-7. Base Unit ............................................................................. 10
3-8. Disc Table ........................................................................... 11
4. TEST MODE
..................................................................... 12
5. MECHANICAL ADJUSTMENTS
..........................
13
6. ELECTRICAL ADJUSTMENTS
............................... 13
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 18
7-2. Block Diagrams
• BD Section ....................................................................... 19
• Deck Section .................................................................... 21
• Main (1/2) Section ........................................................... 23
• Main (2/2) Section ........................................................... 25
• Video Section ................................................................... 27
• Power Section .................................................................. 29
• Display Section ................................................................ 31
7-3. Printed Wiring Board – BD Section – ................................. 35
7-4. Schematic Diagram – BD Section – ................................... 37
7-5. Schematic Diagram – Deck Section – ................................ 39
7-6. Printed Wiring Board – Deck Section – .............................. 41
7-7. Printed Wiring Board – Video Section – ............................. 43
7-8. Schematic Diagram – Video (1/3) Section – ....................... 45
7-9. Schematic Diagram – Video (2/3) Section – ....................... 47
7-10. Schematic Diagram – Video (3/3) Section – .................... 49
7-11. Printed Wiring Board – Main Section – ........................... 51
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output four times.
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