Read Sony STR-DH740 Service Manual online
3
STR-DH740
1.
SERVICING NOTES
............................................. 4
2. DISASSEMBLY
2-1. Case
(Entry)
.................................................................... 5
2-2. Front Panel Section ......................................................... 6
2-3. DCDC Board, STANDBY Board ................................... 7
2-4. Back Panel Section ......................................................... 8
2-5. MAIN Board Section ...................................................... 8
2-6. MAIN
2-3. DCDC Board, STANDBY Board ................................... 7
2-4. Back Panel Section ......................................................... 8
2-5. MAIN Board Section ...................................................... 8
2-6. MAIN
Board
................................................................... 9
3.
TEST MODE
............................................................ 10
4.
FM TUNER CHECK
............................................. 13
5. DIAGRAMS
5-1. Block Diagram - ANALOG AUDIO Section - ............... 15
5-2. Block Diagram - DIGITAL Section -.............................. 16
5-3. Block Diagram - AMP Section - ..................................... 17
5-4. Block Diagram - ANALOG VIDEO/USB Section - ...... 18
5-5. Block Diagram - DIGITAL VIDEO Section - ................ 19
5-6. Block Diagram - DISPLAY/POWER Section - .............. 20
5-7. Printed
5-2. Block Diagram - DIGITAL Section -.............................. 16
5-3. Block Diagram - AMP Section - ..................................... 17
5-4. Block Diagram - ANALOG VIDEO/USB Section - ...... 18
5-5. Block Diagram - DIGITAL VIDEO Section - ................ 19
5-6. Block Diagram - DISPLAY/POWER Section - .............. 20
5-7. Printed
Wiring
Board
- DIGITAL Board (Component Side) - ........................... 22
5-8. Printed
Wiring
Board
- DIGITAL Board (Conductor Side) - ............................. 23
5-9. Schematic Diagram - DIGITAL Board (1/7) - ................ 24
5-10. Schematic Diagram - DIGITAL Board (2/7) - ................ 25
5-11. Schematic Diagram - DIGITAL Board (3/7) - ................ 26
5-12. Schematic Diagram - DIGITAL Board (4/7) - ................ 27
5-13. Schematic Diagram - DIGITAL Board (5/7) - ................ 28
5-14. Schematic Diagram - DIGITAL Board (6/7) - ................ 29
5-15. Schematic Diagram - DIGITAL Board (7/7) - ................ 30
5-16. Printed Wiring Board
5-10. Schematic Diagram - DIGITAL Board (2/7) - ................ 25
5-11. Schematic Diagram - DIGITAL Board (3/7) - ................ 26
5-12. Schematic Diagram - DIGITAL Board (4/7) - ................ 27
5-13. Schematic Diagram - DIGITAL Board (5/7) - ................ 28
5-14. Schematic Diagram - DIGITAL Board (6/7) - ................ 29
5-15. Schematic Diagram - DIGITAL Board (7/7) - ................ 30
5-16. Printed Wiring Board
- MAIN Board (Component Side) - ................................ 31
5-17. Printed Wiring Board
- MAIN Board (Conductor Side) - .................................. 32
5-18. Schematic Diagram - MAIN Board (1/4) - ..................... 33
5-19. Schematic Diagram - MAIN Board (2/4) - ..................... 34
5-20. Schematic Diagram - MAIN Board (3/4) - ..................... 35
5-21. Schematic Diagram - MAIN Board (4/4) - ..................... 36
5-22. Printed Wiring Board - DISPLAY Board - ..................... 37
5-23. Schematic Diagram - DISPLAY Board - ........................ 38
5-19. Schematic Diagram - MAIN Board (2/4) - ..................... 34
5-20. Schematic Diagram - MAIN Board (3/4) - ..................... 35
5-21. Schematic Diagram - MAIN Board (4/4) - ..................... 36
5-22. Printed Wiring Board - DISPLAY Board - ..................... 37
5-23. Schematic Diagram - DISPLAY Board - ........................ 38
TABLE OF CONTENTS
5-24. Printed Wiring Board - DCDC Board - .......................... 39
5-25. Schematic Diagram - DCDC Board - ............................. 40
5-26. Printed Wiring Board - STANDBY Board - ................... 41
5-27. Schematic Diagram - STANDBY Board - ...................... 42
5-28. Printed Wiring Board
5-25. Schematic Diagram - DCDC Board - ............................. 40
5-26. Printed Wiring Board - STANDBY Board - ................... 41
5-27. Schematic Diagram - STANDBY Board - ...................... 42
5-28. Printed Wiring Board
- FRONT JACK PWB Board - ....................................... 43
5-29. Schematic Diagram
- FRONT JACK PWB Board - ....................................... 43
5-30. Printed Wiring Board - TUNER1 Board - ...................... 43
5-31. Schematic Diagram - TUNER1 Board - ......................... 44
5-32. Printed Wiring Board - POWER KEY Board -............... 45
5-33. Schematic Diagram - POWER KEY Board - ................. 45
5-34. Printed Wiring Board - HEADPHONE Board - ............. 45
5-35. Schematic Diagram - HEADPHONE Board - ................ 45
5-31. Schematic Diagram - TUNER1 Board - ......................... 44
5-32. Printed Wiring Board - POWER KEY Board -............... 45
5-33. Schematic Diagram - POWER KEY Board - ................. 45
5-34. Printed Wiring Board - HEADPHONE Board - ............. 45
5-35. Schematic Diagram - HEADPHONE Board - ................ 45
6.
EXPLODED VIEWS
6-1. Case (Entry) Section ....................................................... 61
6-2. DCDC Board Section ...................................................... 62
6-3. Front Panel Section ......................................................... 63
6-4. Back Panel Section ......................................................... 64
6-5. Chassis
6-2. DCDC Board Section ...................................................... 62
6-3. Front Panel Section ......................................................... 63
6-4. Back Panel Section ......................................................... 64
6-5. Chassis
Section
............................................................... 65
7.
ELECTRICAL PARTS LIST
.............................. 66
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