SAVA-D900, SAVA-D900FR, SAVA-D900R, SS-T900 - Sony Audio Service Manual (repair manual). Page 3

3

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.

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.

Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output several times.

......................................................................... 4

2-1. Grille Frame (B) Assy ................................................... 6
2-2. Amplifier Assy .............................................................. 6
2-3. Amplifier Chassis .......................................................... 7
2-4. AMP Board ................................................................... 7
2-5. Power Transformer (T900) ............................................ 8
2-6. PS Board ........................................................................ 8
2-7. Mechanism Section ....................................................... 9
2-8. Video Board ................................................................... 9
2-9. Main Board and DVD Board ....................................... 10
2-10. Mechanism (CDM53J-DVBU1) ................................. 10
2-11. Base Unit (DVBU1) .................................................... 11
2-12. Magnet Assy ................................................................ 11
2-13. Tray (SUB) .................................................................. 12
2-14. Chassis (Mold B), Stocker, Slider (Selection) ............. 12
2-15. How to Assemble the Gears ........................................ 13
2-16. How to Attach the Slider (Selection) ........................... 13
2-17. How to Attach the Stocker ........................................... 14
2-18. How to Attach the Chassis (Mold B) ........................... 14

..................................................................... 15

................................. 26

4-1. Adjustment of Video System ....................................... 26
4-2. Adjustment Related Parts Arrangement ...................... 27

5-1. Circuit Boards Location .............................................. 28
5-2. Block Diagrams ........................................................... 30

– DVD Section – ......................................................... 30
– Main Section – ......................................................... 31

5-3. Printed Wiring Board – DVD Section – ...................... 32
5-4. Schematic Diagram – DVD (1/12) Section – .............. 34
5-5. Schematic Diagram – DVD (2/12) Section – .............. 35
5-6. Schematic Diagram – DVD (3/12) Section – .............. 36
5-7. Schematic Diagram – DVD (4/12) Section – .............. 37
5-8. Schematic Diagram – DVD (5/12) Section – .............. 38
5-9. Schematic Diagram – DVD (6/12) Section – .............. 39
5-10. Schematic Diagram – DVD (7/12) Section – .............. 40
5-11. Schematic Diagram – DVD (8/12) Section – .............. 41
5-12. Schematic Diagram – DVD (9/12) Section – .............. 42
5-13. Schematic Diagram – DVD (10/12) Section – ............ 43
5-14. Schematic Diagram – DVD (11/12) Section – ............ 44
5-15. Schematic Diagram – DVD (12/12) Section – ............ 45
5-16. Printed Wiring Board – TK Section – ......................... 46
5-17. Schematic Diagram – TK Section – ............................ 47
5-18. Schematic Diagram – MAIN Section – ...................... 48
5-19. Printed Wiring Board – MAIN Section – ................... 49
5-20. Schematic Diagram – AMP Section – ........................ 50
5-21. Printed Wiring Board – AMP Section – ...................... 51
5-22. Schematic Diagram – VIDEO Section – ..................... 52
5-23. Printed Wiring Board – VIDEO Section – .................. 53
5-24. Schematic Diagram – DISPLAY Section – ................. 54
5-25. Printed Wiring Board – DISPLAY Section – .............. 55
5-26. Schematic Diagram – MOTOR Section – ................... 56
5-27. Printed Wiring Board – MOTOR Section – ................ 57
5-28. Printed Wiring Board – PS Section – .......................... 58
5-29. Schematic Diagram – PS (1/2) Section – .................... 60
5-30. Schematic Diagram – PS (2/2)  Section – ................... 61
5-31. Printed Wiring Board – POWER Section – ................. 62
5-32. IC Pin Functions .......................................................... 63
5-33. IC Block Diagrams ...................................................... 67

6-1. Overall Section ............................................................ 72
6-2. Main Unit (SAVA-D900) Section ................................ 73
6-3. Main Chassis Section .................................................. 74
6-4. Amplifier Chassis Section ........................................... 75
6-5. Mechanism Section-1 (CDM53J-DVBU1) ................. 76
6-6. Mechanism Section-2 (CDM53J-DVBU1) ................. 77
6-7. Woofer Speaker (SAVA-D900R) Section .................... 78
6-8. Front Speaker (SAVA-D900FR) Section ..................... 79
6-9. Center/Rear Speaker (SS-T900) Section ..................... 80

.................................

81