Read Sony STR-DB1070 / STR-DB870 Service Manual online
4
STR-DB870/DB1070
1.
SERVICING NOTES
...............................................
5
2.
GENERAL
...................................................................
6
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
8
3-2. Case .................................................................................
9
3-3. S-VIDEO board, VIDEO Board, Tuner .........................
9
3-4. VIDEO AU Board ........................................................... 10
3-5. DIGITAL Board .............................................................. 10
3-6. MAIN Board ................................................................... 11
3-5. DIGITAL Board .............................................................. 10
3-6. MAIN Board ................................................................... 11
4.
TEST MODE
.............................................................. 12
5.
ELECTRICAL ADJUSTMENT
............................ 13
6.
DIAGRAMS
6-1. Block Diagram
– TUNER/VIDEO INPUT Section – .............................. 15
6-2. Block Diagram – AUDIO DSP Section – ...................... 16
6-3. Block Diagram – AUDIO CONTROL Section – .......... 17
6-4. Block Diagram – POWER AMP Section – ................... 18
6-5. Block Diagram
6-3. Block Diagram – AUDIO CONTROL Section – .......... 17
6-4. Block Diagram – POWER AMP Section – ................... 18
6-5. Block Diagram
– DISPLAY/KEY CONTROL Section – ........................ 19
6-6. Block Diagram – POWER SUPPLY Section – ............. 20
6-7. Note for Printed Wiring Boards
6-7. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 21
6-8. Schematic Diagram – DIGITAL Board (1/5) – ............. 23
6-9. Schematic Diagram – DIGITAL Board (2/5) – ............. 24
6-10. Schematic Diagram – DIGITAL Board (3/5) – ............. 25
6-11. Schematic Diagram – DIGITAL Board (4/5) – ............. 26
6-12. Schematic Diagram – DIGITAL Board (5/5) – ............. 27
6-13. Printed Wiring Board
6-9. Schematic Diagram – DIGITAL Board (2/5) – ............. 24
6-10. Schematic Diagram – DIGITAL Board (3/5) – ............. 25
6-11. Schematic Diagram – DIGITAL Board (4/5) – ............. 26
6-12. Schematic Diagram – DIGITAL Board (5/5) – ............. 27
6-13. Printed Wiring Board
– DIGITAL Board (Component Side) – ......................... 28
6-14. Printed Wiring Board
– DIGITAL Board (Conductor Side) – ........................... 29
6-15. Printed Wiring Board – VIDEO Board – ....................... 30
6-16. Schematic Diagram – VIDEO Board – ......................... 31
6-17. Printed Wiring Boards
6-16. Schematic Diagram – VIDEO Board – ......................... 31
6-17. Printed Wiring Boards
– S-VIDEO/VIDEO AU Boards – .................................. 32
6-18. Schematic Diagram
– S-VIDEO/VIDEO AU Boards – .................................. 33
6-19. Printed Wiring Board – MAIN Board – ........................ 34
6-20. Schematic Diagram – MAIN Board (1/3) – .................. 35
6-21. Schematic Diagram – MAIN Board (2/3) – .................. 36
6-22. Schematic Diagram – MAIN Board (3/3) – .................. 37
6-23. Printed Wiring Board – BIAS Board – .......................... 38
6-24. Schematic Diagram – BIAS Board – ............................. 39
6-25. Printed Wiring Boards – DISP/SW Boards – ................ 40
6-26. Schematic Diagram – DISP/SW Boards – .................... 41
6-27. Printed Wiring Boards
6-20. Schematic Diagram – MAIN Board (1/3) – .................. 35
6-21. Schematic Diagram – MAIN Board (2/3) – .................. 36
6-22. Schematic Diagram – MAIN Board (3/3) – .................. 37
6-23. Printed Wiring Board – BIAS Board – .......................... 38
6-24. Schematic Diagram – BIAS Board – ............................. 39
6-25. Printed Wiring Boards – DISP/SW Boards – ................ 40
6-26. Schematic Diagram – DISP/SW Boards – .................... 41
6-27. Printed Wiring Boards
– H.P/MUTING/POWER/SP/VIDEO 3 Boards – ......... 42
6-28. Schematic Diagram
– H.P/MUTING/POWER/SP/VIDEO 3 Boards – ......... 43
6-29. Printed Wiring Boards
– POWER SUPPLY Section – ........................................ 44
6-30. Schematic Diagram – POWER SUPPLY Section – ...... 45
6-31. IC Pin Function Description ........................................... 51
6-31. IC Pin Function Description ........................................... 51
Ver 1.2
7.
EXPLODED VIEWS
7-1. Case Section .................................................................... 63
7-2. Front Panel Section-1 ...................................................... 64
7-3. Front Panel Section-2 ...................................................... 65
7-4. Chassis Section-1 ............................................................ 66
7-5. Chassis Section-2 ............................................................ 67
7-2. Front Panel Section-1 ...................................................... 64
7-3. Front Panel Section-2 ...................................................... 65
7-4. Chassis Section-1 ............................................................ 66
7-5. Chassis Section-2 ............................................................ 67
8.
ELECTRICAL PARTS LIST
............................... 68
TABLE OF CONTENTS
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