Service manual

4
TABLE OF CONTENTS
SELF-DIAGNOSIS FUNCTION ..................................... 2
1. SERVICING NOTES ............................................... 5
2. GENERAL ................................................................... 16
3. DISASSEMBLY ......................................................... 18
4. TEST MODE ............................................................... 26
5. ELECTRICAL ADJUSTMENTS
MD Section ..................................................................... 30
CD Section ...................................................................... 38
6. DIAGRAMS
6-1. Block Diagram – CD SERVO Section – ....................... 39
6-2. Block Diagram – MD SERVO Section (1/2) – ............. 40
6-3. Block Diagram – MD SERVO Section (2/2) – ............. 41
6-4. Block Diagram – MAIN Section – ................................ 42
6-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 43
6-6. Printed Wiring Board – BD (CD) Board – .................... 44
6-7. Schematic Diagram – BD (CD) Board – ....................... 45
6-8. Schematic Diagram – BD (MD) Board (1/2) – ............. 46
6-9. Schematic Diagram – BD (MD) Board (2/2) – ............. 47
6-10. Printed Wiring Board – BD (MD) Board – ................... 48
6-11. Schematic Diagram – BD SW (MD) Board – ............... 49
6-12. Printed Wiring Board – BD SW (MD) Board – ............ 49
6-13. Schematic Diagram – LOADING (CD) Board – .......... 49
6-14. Printed Wiring Board – LOADING (CD) Board – ....... 49
6-15. Printed Wiring Board – MD DIGITAL Board – ........... 50
6-16. Schematic Diagram – MD DIGITAL Board – .............. 51
6-17. Printed Wiring Board – MAIN Board – ........................ 52
6-18. Schematic Diagram – MAIN Board (1/3) – .................. 53
6-19. Schematic Diagram – MAIN Board (2/3) – .................. 54
6-20. Schematic Diagram – MAIN Board (3/3) – .................. 55
6-21. Printed Wiring Boards – AMP/SP Boards – .................. 56
6-22. Schematic Diagram – AMP/SP Boards – ...................... 57
6-23. Printed Wiring Board – PANEL Board – ...................... 58
6-24. Schematic Diagram – PANEL Board – ........................ 59
6-25. Printed Wiring Board – POWER Board – ..................... 60
6-26. Schematic Diagram – POWER Board – ........................ 61
6-27. IC Pin Function Description ........................................... 70
7. EXPLODED VIEWS ................................................ 80
8. ELECTRICAL PARTS LIST ............................... 86
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 ˚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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation 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.