Sony STR-DB795 Service Manual

4
STR-DB795
TABLE OF CONTENTS
7. EXPLODED VIEWS
7-1. Case Section .................................................................... 68
7-2. Chassis Section-1 ............................................................ 69
7-3. Chassis Section-2 ............................................................ 70
7-4. Main Block Section ......................................................... 71
7-5. MAIN Board Block ......................................................... 72
7-6. Chassis Section-3 ............................................................ 73
7-7. Front Panel Block-1......................................................... 74
7-8. Front Panel Block-2......................................................... 75
7-9. Front Panel Block-3......................................................... 76
8. ELECTRICAL PARTS LIST................................ 77
1. SERVICING NOTES ............................................... 5
2. GENERAL ................................................................... 7
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 9
3-2. Case (414535).................................................................. 10
3-3. COMP-V Board............................................................... 10
3-4. Back Panel Block ............................................................ 11
3-5. Main Block ...................................................................... 11
3-6. DIGITAL Board .............................................................. 12
3-7. STAY 3/STAY 4/SP-B/SP-A/S-VIDEO/VIDEO/
VIDEO-AU/AU-IN Board............................................... 12
3-8. MAIN board .................................................................... 13
4. TEST MODE.............................................................. 14
5. ELECTRICAL ADJUSTMENTS ......................... 15
6. DIAGRAMS
6-1. Block Diagram − TUNER/VIDEO Section − ................. 17
6-2. Block Diagram − AUDIO DSP Section − ....................... 18
6-3. Block Diagram − AUDIO CONTROL Section − ............ 19
6-4. Block Diagram − AUDIO AMP Section − ...................... 20
6-5. Block Diagram
− DISPLAY/KEY CONTROL Section − ........................ 21
6-6. Block Diagram − POWER SUPPLY Section −.............. 22
6-7. Printed Wiring Board
− DIGITAL Section (1/2) − ............................................. 24
6-8. Printed Wiring Board
− DIGITAL Section (2/2) − ............................................. 25
6-9. Schematic Diagram − DIGITAL Section (1/4) − ............ 26
6-10. Schematic Diagram − DIGITAL Section (2/4) − ............ 27
6-11. Schematic Diagram − DIGITAL Section (3/4) − ............ 28
6-12. Schematic Diagram − DIGITAL Section (4/4) − ............ 29
6-13. Printed Wiring Boards − VIDEO Section − .................... 30
6-14. Schematic Diagram − VIDEO Section −......................... 31
6-15. Printed Wiring Boards − S-VIDEO Section −................. 32
6-16. Schematic Diagram − S-VIDEO Section − ..................... 33
6-17. Printed Wiring Board − COMP-V Section −................... 34
6-18. Schematic Diagram − COMP-V Section − ..................... 35
6-19. Printed Wiring Board − AU-IN Section − ....................... 36
6-20. Schematic Diagram − AU-IN Section − .......................... 37
6-21. Printed Wiring Board − MAIN Section −........................ 38
6-22. Schematic Diagram − MAIN Section (1/3) − ................. 39
6-23. Schematic Diagram − MAIN Section (2/3) − ................. 40
6-24. Schematic Diagram − MAIN Section (3/3) − ................. 41
6-25. Printed Wiring Board − A CLASS Section − .................. 42
6-26. Schematic Diagram − A CLASS Section − ..................... 43
6-27. Printed Wiring Board − SBL Section − ........................... 44
6-28. Schematic Diagram − SBL Section −.............................. 45
6-29. Printed Wiring Board − SP Section − .............................. 46
6-30. Schematic Diagram − SP Section − ................................ 47
6-31. Printed Wiring Boards − DISPLAY Section − ................ 48
6-32. Schematic Diagram − DISPLAY Section − .................... 49
6-33. Printed Wiring Boards − DC Section − ........................... 50
6-34. Schematic Diagram − DC Section − .............................. 51
6-35. Printed Wiring Boards − AC Section − ........................... 52
6-36. Schematic Diagram − AC Section −................................ 53

Sony STR-DB795 Specifications

General

Dimensions (WxDxH)	430 x 401 x 161 mm
Power requirements	230V, 50/60Hz
Supported radio bands	FM, MW
Radio Data System (RDS)	Yes
I/O ports	5.1 Analogue Input - 1.0 Audio Input - 3.0 Audio Input Front - 1 AV, S-Video Audio Output - 1.0 Control A1 / A1 II Digital Input: coaxial - 1.0 Digital Input: optical - 4.0 Digital Output: optical - 1.0 Headphone Output Monitor Output (Picture): FBAS - 1.0 Monitor Output (Picture): S-Video - 1.0 Phono Input Speaker Selector A S-Video Input - 4.0 S-Video Output - 1.0 Video Input - 5.0 Video Output - 2.0
Connectivity technology	Wired
Frequency range	20 - 20000 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	290 W

Weight and Dimensions

Weight	12500 g