HCD-DR7AV, HCD-XB800AV, LBT-DR7AVS - Sony Audio Service Manual (repair manual). Page 5

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7-15. Printed Wiring Board – Power Section –

(DR7AV model) ................................................................ 61

7-16. Schematic Diagram – Power (1/2) Section –

(XB800AV model) ............................................................ 63

7-17. Schematic Diagram – Power (2/2) Section –

(XB800AV model) ............................................................ 65

7-18. Printed Wiring Board – Power Section –

(XB800AV model) ............................................................ 67

7-19. Schematic Diagram – Panel FL Section – ........................ 69
7-20. Printed Wiring Board – Panel FL Section – ..................... 71
7-21. Schematic Diagram – Panel VR Section – ....................... 73
7-22. Printed Wiring Board – Panel VR Section – .................... 75
7-23. Schematic Diagram – TC Panel Section – ....................... 77
7-24. Printed Wiring Board – TC Panel Section – ..................... 79
7-25. Schematic Diagram – CD Panel Section – ....................... 81
7-26. Printed Wiring Board – CD Panel Section – .................... 83
7-27. Schematic Diagram – CD Motor Section – ...................... 85
7-28. Printed Wiring Board – CD Motor Section – ................... 87
7-29. Schematic Diagram – Jack Section – ............................... 89
7-30. Printed Wiring Board – Jack Section – ............................ 91
7-31. Schematic Diagram – Trans Section –

(XB800AV model) ............................................................ 93

7-32. Printed Wiring Board – Trans Section –

(XB800AV model) ............................................................ 95

7-33. Schematic Diagram – Trans Section –

(DR7AV model) ................................................................ 97

7-34. Printed Wiring Board – Trans Section –

(DR7AV model) ................................................................ 99

7-35. Schematic Diagram – Leaf SW Section – ...................... 100
7-36. Printed Wiring Board – Leaf SW Section – ................... 100
7-37. Schematic Diagram – Surround Section – ..................... 101
7-38. Printed Wiring Board – Surround Section – ................... 101
7-39. IC Block Diagrams ......................................................... 103
7-40. IC Pin Functions ............................................................. 104

8-1. Case and Back Panel Section ............................................ 107
8-2. Front Panel Section 1 ........................................................ 108
8-3. Front Panel Section 2 ........................................................ 109
8-4. Chassis Section ................................................................. 110
8-5. TC Mechanism Section 1 (TCM230AWR2/230PWR2) ... 111
8-6. TC Mechanism Section 2 (TCM230AWR2/230PWR2) ... 112
8-7. CD Mechanism Section (CDM37M-5BD32L) ................. 113
8-8. Base Unit Section (BU-5BD32L) ..................................... 114

...................................... 115

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

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6

3-1. Front Panel ............................................................................ 8
3-2. Main Board ........................................................................... 8
3-3. Sub Panel .............................................................................. 9
3-4. CD-L/CD-R Board and CD Lid Assembly ........................... 9
3-5. Tape Mechanism Deck and Cassette Lid ............................ 10
3-6. CD Mechanism Deck .......................................................... 10
3-7. Base Unit ............................................................................. 10
3-8. Disc Table ........................................................................... 11

............................................................ 12

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16

............................... 16

7-1. Circuit Boards Location ...................................................... 19
7-2. Block Diagrams

• BD (CD) Section .............................................................. 21
• Deck Section .................................................................... 23
• Main (1/2) Section ........................................................... 25
• Main (2/2) Section ........................................................... 27
• Power Section (DR7AV model) ....................................... 29
• Power Section (XB800AV model) ................................... 31
• Display Section ................................................................ 33

7-3. Printed Wiring Board – BD (CD) Section – ....................... 37
7-4. Schematic Diagram – BD (CD) Section – .......................... 39
7-5. Printed Wiring Board – Main Section – .............................. 41
7-6. Schematic Diagram – Main (1/5) Section – ........................ 43
7-7. Schematic Diagram – Main (2/5) Section – ........................ 45
7-8. Schematic Diagram – Main (3/5) Section – ........................ 47
7-9. Schematic Diagram – Main (4/5) Section – ........................ 49
7-10. Schematic Diagram – Main (5/5) Section – ..................... 51
7-11. Schematic Diagram – Deck Section – .............................. 53
7-12. Printed Wiring Board – Deck Section – ........................... 55
7-13. Schematic Diagram – Power (1/2) Section –

(DR7AV model) ................................................................ 57

7-14. Schematic Diagram – Power (2/2) Section –

(DR7AV model) ................................................................ 59