PMC-DR50L, PMC-DR70L - Sony Audio Service Manual (repair manual). Page 2

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Specifications ...........................................................................  1

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3-1.   Case(bottom), “Cover ASSY, Top” .......................... 6
3-2.   CD ASSY .................................................................. 7
3-3.   Main Board, Jack Board ........................................... 7
3-4.   Tray ........................................................................... 8
3-5.   ASP Board ................................................................ 8
3-6.   Belt ........................................................................... 9
3-7.   Motor Board, Loding Motor (M651) ........................ 9
3-8.   Optical Pick-up Block ............................................ 10
3-9.   Mechanism Deck .................................................... 10
3-10. TC RF Board, Head Relay Board,
          Capstan/Reel Motor (M160) ................................... 11
3-11. Control Board .......................................................... 11
3-12. Display Board ......................................................... 12
3-13. DSP Board, CPU board .......................................... 12
3-14. VOL Board ............................................................. 13
3-15. “Cabinet, Wood”, “Cabinet (R) Bottom” ............... 13
3-16. Speaker (R-CH) (SP101) ........................................ 14
3-17. Power Board ........................................................... 14
3-18. AMP Board, AMP IC Board ................................... 15
3-19. Speaker Board ........................................................ 15
3-20. “Cabinet, Wood”, “Cabinet (L) Bottom” ................ 16
3-21. Speaker (L-CH) (SP201) ........................................ 16
3-22. Power Transfomer Board ........................................ 17
3-23. SP Main Board, SP AMP IC Board ........................ 17
3-24. AC Outlet Board, SP Jack Board ............................ 18
3-25. Cabinet (SWF) Bottom, Connector Board ............. 18
3-26. Speaker (SP601), “Cabinet, Front” ......................... 19
3-27. LED Board, Volume Board ..................................... 19

4-1. Mechanical Adjustments .......................................... 20
4-2. Electrical Adjustments .............................................. 20

5-1.   Explanation of IC Terminals ................................... 23
5-2.   Block Diagrams – Tuner Section – ......................... 27
5-3.   Block Diagrams – CD Section– .............................. 29
5-4.   Block Diagrams – Tape Section– ........................... 31
5-5.   Block Diagrams – Speaker Section– ...................... 33
5-6.   Printed Wiring Boards – Main Section– ................. 35
5-7.   Schematic Diagram – Main Section (1/3) – ........... 37
5-8.   Schematic Diagram – Main Section (2/3) – ........... 39
5-9.   Schematic Diagram – Main Section (3/3) – ........... 41
5-10. Printed Wiring Boards – Jack Section – ................. 43
5-11. Schematic Diagram – Jack Section – ...................... 45
5-12. Printed Wiring Boards – CD Section – ................... 47
5-13. Schematic Diagram – CD • ASP Section – ............. 49
5-14. Schematic Diagram – CD • DSP Section – ............ 51
5-15. Printed Wiring Boards – Control Section – ............ 53
5-16. Schematic Diagram – Control Section – ................ 55
5-17. Schematic Diagram – System Control Section – .... 57
5-18. Printed Wiring Boards – AMP Section – ................ 59
5-19. Schematic Diagram – AMP Section – .................... 61
5-20. Printed Wiring Boards – Woofer Section – ............ 63
5-21. Schematic Diagram – Woofer Section – ................. 65

6-1.   Case Section ........................................................... 72
6-2.   Control Section ....................................................... 73
6-3.   CD Mechanism Section .......................................... 74
6-4.   Mechanism Deck Section -1 ................................... 75
6-5.   Mechanism Deck Section -2 ................................... 76
6-6.   CD Optical Pick-up Section ................................... 77
6-7.   Speaker (R-CH) Section ......................................... 78
6-8.   Speaker (L-CH) Section (DR50L Only) ................. 79
6-9.   Speaker (L-CH) Section (DR70L Only) ................. 80
6-10. Super Woofer Section (DR70L Only) .................... 81

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