Read Sony HCD-BX7DAB Service Manual online
3
HCD-BX7DAB
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
4
2.
GENERAL
...................................................................
6
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
7
3-2.
Panel (Side L/R) ..............................................................
7
3-3.
LID (CD) Assy ................................................................
8
3-4.
Panel (Top) ......................................................................
8
3-5.
MAIN Board, Shield Plate (PWB Main) .........................
9
3-6.
DAB Board, Module (DAB Tuner) ................................. 10
3-7.
Front Panel/Headphone Boards, Panel (Front) Assy ....... 10
3-8.
D.C. Fan (M301), Panel (Rear) ....................................... 11
3-9.
Power Transformer (T1) .................................................. 11
3-10. Loading Mechanism Block ............................................. 12
3-11. Base Unit ......................................................................... 12
3-12. Belt .................................................................................. 13
3-13. OP Base Assy (KSM-213D), CD board .......................... 13
3-11. Base Unit ......................................................................... 12
3-12. Belt .................................................................................. 13
3-13. OP Base Assy (KSM-213D), CD board .......................... 13
4.
TEST MODE
.............................................................. 14
5.
ELECTRICAL CHECKS
........................................ 16
6.
DIAGRAMS
6-1.
Block Diagram – CD SERVO Section – ......................... 17
6-2.
Block Diagram – TUNER, USB, DAB Section – ........... 18
6-3.
Block Diagram – MAIN Section – .................................. 19
6-4.
Block Diagram
– PANEL, POWER SUPPLY Section – .......................... 20
– PANEL, POWER SUPPLY Section – .......................... 20
6-5.
Printed Wiring Boards – CD Section – ........................... 22
6-6.
Schematic Diagram – CD Board – .................................. 23
6-7.
Printed Wiring Board – USB Board – ............................. 24
6-8.
Schematic Diagram – USB Board – ................................ 25
6-9.
Printed Wiring Board – DAB Board – ............................. 26
6-10. Schematic Diagram – DAB Board – ............................... 27
6-11. Printed Wiring Boards – REGULATOR Section – ......... 28
6-12. Schematic Diagram – REGULATOR Section – .............. 28
6-13. Printed Wiring Board – MAIN Section – ........................ 29
6-14. Schematic Diagram – MAIN Section (1/4) – .................. 30
6-15. Schematic Diagram – MAIN Section (2/4) – .................. 31
6-16. Schematic Diagram – MAIN Section (3/4) – .................. 32
6-17. Schematic Diagram – MAIN Section (4/4) – .................. 33
6-18. Printed Wiring Board – AMP Board – ............................ 34
6-19. Schematic Diagram – AMP Board – ............................... 35
6-20. Printed Wiring Boards – SPEAKER Section – ............... 36
6-21. Schematic Diagram – SPEAKER Section – .................... 37
6-22. Printed Wiring Boards – PANEL Section – ..................... 38
6-23. Schematic Diagram – PANEL Section – ......................... 39
6-24. Printed Wiring Board – POWER Board – ....................... 40
6-25. Schematic Diagram – POWER Board – .......................... 41
6-11. Printed Wiring Boards – REGULATOR Section – ......... 28
6-12. Schematic Diagram – REGULATOR Section – .............. 28
6-13. Printed Wiring Board – MAIN Section – ........................ 29
6-14. Schematic Diagram – MAIN Section (1/4) – .................. 30
6-15. Schematic Diagram – MAIN Section (2/4) – .................. 31
6-16. Schematic Diagram – MAIN Section (3/4) – .................. 32
6-17. Schematic Diagram – MAIN Section (4/4) – .................. 33
6-18. Printed Wiring Board – AMP Board – ............................ 34
6-19. Schematic Diagram – AMP Board – ............................... 35
6-20. Printed Wiring Boards – SPEAKER Section – ............... 36
6-21. Schematic Diagram – SPEAKER Section – .................... 37
6-22. Printed Wiring Boards – PANEL Section – ..................... 38
6-23. Schematic Diagram – PANEL Section – ......................... 39
6-24. Printed Wiring Board – POWER Board – ....................... 40
6-25. Schematic Diagram – POWER Board – .......................... 41
7.
EXPLODED VIEWS
7-1.
Panel Section ................................................................... 52
7-2.
Front Panel Section ......................................................... 53
7-3.
Main Section .................................................................... 54
7-4.
POWER Board Section ................................................... 55
7-5.
Loading Mechanism Section ........................................... 56
7-6.
Base Unit Section (BU-K6BD90U-WOD) ..................... 57
8.
ELECTRICAL PARTS LIST
................................ 58
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