Read Sony HCD-V8900 / HCD-V8900AV / LBT-V8900AV Service Manual online
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TABLE OF CONTENTS
7-12. Printed Wiring Board – Main Section – ........................... 47
7-13. Schematic Diagram – Main (1/5) Section – ..................... 49
7-14. Schematic Diagram – Main (2/5) Section – ..................... 51
7-15. Schematic Diagram – Main (3/5) Section – ..................... 53
7-16. Schematic Diagram – Main (4/5) Section – ..................... 55
7-17. Schematic Diagram – Main (5/5) Section – ..................... 57
7-18. Printed Wiring Board – Deck Section – ........................... 59
7-19. Schematic Diagram – Deck Section – .............................. 61
7-20. Printed Wiring Board – Power Section – ......................... 63
7-21. Schematic Diagram – Power Section – ............................ 65
7-22. Schematic Diagram – Panel Section – ............................. 67
7-23. Printed Wiring Board – Panel Section – ........................... 69
7-24. Printed Wiring Board – TC/CD Panel-1 Section – ........... 71
7-25. Schematic Diagram – TC/CD Panel-1 Section – ............. 73
7-26. Schematic Diagram – HP/Mic Section – .......................... 75
7-27. Printed Wiring Board – HP/Mic Section – ....................... 77
7-28. Printed Wiring Board – CD Motor Section – ................... 79
7-29. Schematic Diagram – CD Motor Section – ...................... 81
7-30. Printed Wiring Board – Trans Section – ........................... 83
7-31. Schematic Diagram – Trans Section – ............................. 85
7-32. Printed Wiring Board – Surround Section – ..................... 87
7-33. Schematic Diagram – Surround Section – ....................... 88
7-34. IC Block Diagrams ........................................................... 89
7-35. IC Pin Functions ............................................................... 96
7-13. Schematic Diagram – Main (1/5) Section – ..................... 49
7-14. Schematic Diagram – Main (2/5) Section – ..................... 51
7-15. Schematic Diagram – Main (3/5) Section – ..................... 53
7-16. Schematic Diagram – Main (4/5) Section – ..................... 55
7-17. Schematic Diagram – Main (5/5) Section – ..................... 57
7-18. Printed Wiring Board – Deck Section – ........................... 59
7-19. Schematic Diagram – Deck Section – .............................. 61
7-20. Printed Wiring Board – Power Section – ......................... 63
7-21. Schematic Diagram – Power Section – ............................ 65
7-22. Schematic Diagram – Panel Section – ............................. 67
7-23. Printed Wiring Board – Panel Section – ........................... 69
7-24. Printed Wiring Board – TC/CD Panel-1 Section – ........... 71
7-25. Schematic Diagram – TC/CD Panel-1 Section – ............. 73
7-26. Schematic Diagram – HP/Mic Section – .......................... 75
7-27. Printed Wiring Board – HP/Mic Section – ....................... 77
7-28. Printed Wiring Board – CD Motor Section – ................... 79
7-29. Schematic Diagram – CD Motor Section – ...................... 81
7-30. Printed Wiring Board – Trans Section – ........................... 83
7-31. Schematic Diagram – Trans Section – ............................. 85
7-32. Printed Wiring Board – Surround Section – ..................... 87
7-33. Schematic Diagram – Surround Section – ....................... 88
7-34. IC Block Diagrams ........................................................... 89
7-35. IC Pin Functions ............................................................... 96
8. EXPLODED VIEWS
8-1. Case and Back Panel Section ............................................ 113
8-2. Front Panel Section-1 ........................................................ 114
8-3. Front Panel Section-2 ........................................................ 115
8-4. Chassis Section ................................................................. 116
8-5. TC Mechanism Section-1 (TCM-220WR2) ..................... 117
8-6. TC Mechanism Section-2 (TCM-220WR2) ..................... 118
8-7. TC Mechanism Section-3 (TCM-220WR2) ..................... 119
8-8. CD Mechanism Section (CDM37L-5BD21L) .................. 120
8-9. Base Unit Section (BU-5BD21AL) .................................. 121
8-2. Front Panel Section-1 ........................................................ 114
8-3. Front Panel Section-2 ........................................................ 115
8-4. Chassis Section ................................................................. 116
8-5. TC Mechanism Section-1 (TCM-220WR2) ..................... 117
8-6. TC Mechanism Section-2 (TCM-220WR2) ..................... 118
8-7. TC Mechanism Section-3 (TCM-220WR2) ..................... 119
8-8. CD Mechanism Section (CDM37L-5BD21L) .................. 120
8-9. Base Unit Section (BU-5BD21AL) .................................. 121
9. ELECTRICAL PARTS LIST
...................................... 122
1. GENERAL
.......................................................................... 4
2. DISASSEMBLY
2-1. Front Panel ........................................................................... 5
2-2. Main Board ........................................................................... 6
2-3. Tape Mechanism Deck .......................................................... 6
2-4. Cassette Lid Assembly .......................................................... 7
2-5. CD Lid Assembly .................................................................. 7
2-6. CD Mechanism Deck ............................................................ 8
2-7. Base Unit .............................................................................. 8
2-8. Disc Table ............................................................................. 8
2-2. Main Board ........................................................................... 6
2-3. Tape Mechanism Deck .......................................................... 6
2-4. Cassette Lid Assembly .......................................................... 7
2-5. CD Lid Assembly .................................................................. 7
2-6. CD Mechanism Deck ............................................................ 8
2-7. Base Unit .............................................................................. 8
2-8. Disc Table ............................................................................. 8
3. SERVICE MODE
.............................................................. 9
4. TEST MODE
..................................................................... 11
5. MECHANICAL ADJUSTMENTS
..........................
12
6. ELECTRICAL ADJUSTMENTS
............................... 12
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 17
7-2. Block Diagrams
7-2. Block Diagrams
• KEY CON Section ........................................................... 18
• CD Section ....................................................................... 19
• Video Section ................................................................... 21
• Deck Section .................................................................... 23
• Main Section .................................................................... 25
• Power Section .................................................................. 27
• CD Section ....................................................................... 19
• Video Section ................................................................... 21
• Deck Section .................................................................... 23
• Main Section .................................................................... 25
• Power Section .................................................................. 27
7-3. Printed Wiring Board – CD Section – ................................. 31
7-4. Schematic Diagram – CD Section – ................................... 33
7-5. Printed Wiring Board – Video Section – ............................. 35
7-6. Schematic Diagram – Video (1/4) Section – ....................... 37
7-7. Schematic Diagram – Video (2/4) Section – ....................... 39
7-8. Schematic Diagram – Video (3/4) Section – ....................... 41
7-9. Schematic Diagram – Video (4/4) Section – ....................... 43
7-10. Printed Wiring Board – Key Control Section – ................ 45
7-11. Schematic Diagram – Key Control Section – ................... 46
7-4. Schematic Diagram – CD Section – ................................... 33
7-5. Printed Wiring Board – Video Section – ............................. 35
7-6. Schematic Diagram – Video (1/4) Section – ....................... 37
7-7. Schematic Diagram – Video (2/4) Section – ....................... 39
7-8. Schematic Diagram – Video (3/4) Section – ....................... 41
7-9. Schematic Diagram – Video (4/4) Section – ....................... 43
7-10. Printed Wiring Board – Key Control Section – ................ 45
7-11. Schematic Diagram – Key Control Section – ................... 46
MODEL IDENTIFICATION
— BACK PANEL —
— BACK PANEL —
V8900AV: SP, MY
V8900AV: CH
V8900AV: IA
V8900
MODEL
PARTS No.
4-900-073-0π
4-900-073-1π
4-900-073-2π
4-900-073-3π
• Abbreviation
SP : Singapore model
MY : Malaysia model
IA : Indonesian model
CH : Chinese model
MY : Malaysia model
IA : Indonesian model
CH : Chinese model
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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.
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.
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
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output two times.
that the S curve waveform is output two times.
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