HCD-V909AV, MHC-V909AV - Sony Audio Service Manual (repair manual). Page 3

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.......................................................................... 6

3-1. Back Panel ........................................................................... 7
3-2. Loading Panel ....................................................................... 8
3-3. CD Mechanism Deck ............................................................ 8
3-4. Front Panel ........................................................................... 9
3-5. TC Mechanism Deck and DECO Board ............................... 9
3-6. HP/MIC Board, Display Board and TC SW Board ............ 10
3-7. Disc Tray ........................................................................... 10

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11

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12

............................... 12

7-1. Circuit Boards Location ...................................................... 17
7-2. Block Diagrams

• KEY CON Section ........................................................... 18
• CD Section ....................................................................... 19
• Video Section ................................................................... 21
• Deck Section .................................................................... 23
• Main Section .................................................................... 25
• Power Section .................................................................. 27

7-3. Printed Wiring Board — CD Section — ............................. 29
7-4. Schematic Diagram — CD Section — ............................... 31
7-5. Schematic Diagram — Video Section — ........................... 33
7-6. Printed Wiring Board — Video Section — ......................... 37
7-7. Printed Wiring Board — Main Section — .......................... 40
7-8. Schematic Diagram — Main Section — ............................ 43
7-9. Schematic Diagram — Deck Section — ............................ 47
7-10. Printed Wiring Board — Deck Section — ....................... 51
7-11. Schematic Diagram — Panel Section — ......................... 54
7-12. Printed Wiring Board — Panel Section — ....................... 57
7-13. Schematic Diagram — Power Section — ........................ 61
7-14. Printed Wiring Board — Power Section — ..................... 65
7-15. Schematic Diagram — CD Motor Section — .................. 68
7-16. Printed Wiring Board — CD Motor Section — ............... 69
7-17. Schematic Diagram — KEY CON Section — ................. 71
7-18. Printed Wiring Board — KEY CON Section — .............. 72
7-19. IC Block Diagrams ........................................................... 73
7-20. IC Pin Functions ............................................................... 80

8-1. Case Section ........................................................................ 97
8-2. Main Board Section ............................................................ 98
8-3. Panel Board Section ............................................................ 99
8-4. Front Panel Section ........................................................... 100
8-5. TC Mechanism Section 1 (TCM-220WR2) ...................... 101
8-6. TC Mechanism Section 2 (TCM-220WR2) ...................... 102
8-7. CD Mechanism Section 1 (CDM38L-5BD29AL) ............ 103
8-8. CD Mechanism Section 2 (CDM38L-5BD29AL) ............ 104
8-9. Base Unit Section (BU-5BD29AL) .................................. 105

...................................... 106

1

Remove the Case.

2

Remove the Back panel.

4

 Pull-out the disc tray.

3

 Turn the cam to the 

direction of arrow.

BU cam

groove

Section A

Note : When attaching the Base unit. insert the 

section A into the groove of BU cam.      

Note : When attaching the 

BU cam, engage the 
Rotary encoder switch 
as shown in the figure.