Table Of Contents - Sony STR-K790 Service Manual

About area codes
The area code of the receiver you purchased is
shown on the lower right portion of the rear panel
(see the illustration below).
R L
R L
CENTER FRONT
SPEAKERS
Any differences in operation, according to the area
code, are clearly indicated in the text, for example,
"Models of area code AA only".
MODEL IDENTIFICATION
- Rear Panel -
Model
US model
Canadian model
AEP, UK models
Area code
Parts No.
Part No.
2-896-343-4[]
2-896-343-5[]
2-896-343-6[]

TABLE OF CONTENTS

1. GENERAL
................................................................... 4
2. TEST MODE
............................................................... 10
3. ELECTRICAL ADJUSTMENT
4. DIAGRAMS
................................................................. 13
4-1. Block Diagram - MAIN Section - .................................. 14
4-2. Block Diagram - DISPLAY/POWER Section - ............. 15
4-3. Printed Wiring Board - DIGITAL Board (Side A) - ...... 16
4-4. Printed Wiring Board - DIGITAL Board (Side B) - ...... 17
4-5. Schematic Diagram - DIGITAL Board (1/5) - .............. 18
4-6. Schematic Diagram - DIGITAL Board (2/5) - .............. 19
4-7. Schematic Diagram - DIGITAL Board (3/5) - .............. 20
4-8. Schematic Diagram - DIGITAL Board (4/5) - .............. 21
4-9. Schematic Diagram - DIGITAL Board (5/5) - .............. 22
4-10. Printed Wiring Boards - HDMI SW Board,
HDMI BRIDGE Board (AEP, UK only) - ...................... 23
4-11. Schematic Diagram - HDMI SW Board,
HDMI BRIDGE Board (AEP, UK only) - ...................... 24
4-12. Printed Wiring Board - MAIN Board - ......................... 25
4-13. Printed Wiring Board - STANDBY Board - ................. 26
4-14. Schematic Diagram - MAIN Board (1/4) - ................... 27
4-15. Schematic Diagram - MAIN Board (2/4),
STANDBY Board - ......................................................... 28
4-16. Schematic Diagram - MAIN Board (3/4) - ................... 29
4-17. Schematic Diagram - MAIN Board (4/4) - ................... 30
4-18. Printed Wiring Board - DISPLAY Board - ................... 31
4-19. Schematic Diagram - DISPLAY Board - ...................... 32
4-20. Printed Wiring Boards - POWER Board, DCAC Board,
HEADPHONE Board - ................................................... 33
4-21. Schematic Diagram - POWER Board, DCAC Board,
HEADPHONE Board - ................................................... 34
5. EXPLODED VIEWS
5-1. Front Panel Section ......................................................... 42
5-2. Chassis Section ................................................................ 43
6. ELECTRICAL PARTS LIST
STR-K790
............................. 12
.................................. 44
3