Sony STR-DN840 Service Manual Download

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STR-DN840

1. SERVICING NOTES

............................................. 5

2. DISASSEMBLY

2-1. Disassembly

Flow

........................................................... 7

2-2. Case (Entry) .................................................................... 8
2-3. TUNER1

ASSY

.............................................................. 8

2-4.  Front Panel Section .........................................................   9
2-5.  DIGITAL Board, NETWORK Module...........................   10
2-6.  DCDC Board, STANDBY Board,

GND BRACKET Board ................................................. 11

2-7. Back Panel Section, MAIN Board Section ..................... 12
2-8. MAIN

Board

................................................................... 13

3. TEST MODE

............................................................ 14

4. FM TUNER CHECK

............................................. 17

5. DIAGRAMS

5-1.  Block Diagram - ANALOG AUDIO Section - ...............   19
5-2.  Block Diagram - DIGITAL Section -..............................   20
5-3.  Block Diagram - AMP Section - .....................................   21
5-4.  Block Diagram - ANALOG VIDEO/USB Section - ......   22
5-5.  Block Diagram - DIGITAL VIDEO Section - ................   23
5-6.  Block Diagram - DISPLAY/POWER Section - ..............   24
5-7. Printed

Wiring

Board

- DIGITAL Board (Component side) -............................ 26

5-8. Printed

Wiring

Board

- DIGITAL Board (Conductor side) - ............................. 27

5-9.  Schematic Diagram - DIGITAL Board (1/8) - ................   28
5-10.  Schematic Diagram - DIGITAL Board (2/8) - ................   29
5-11.  Schematic Diagram - DIGITAL Board (3/8) - ................   30
5-12.  Schematic Diagram - DIGITAL Board (4/8) - ................   31
5-13.  Schematic Diagram - DIGITAL Board (5/8) - ................   32
5-14.  Schematic Diagram - DIGITAL Board (6/8) - ................   33
5-15.  Schematic Diagram - DIGITAL Board (7/8) - ................   34
5-16.  Schematic Diagram - DIGITAL Board (8/8) - ................   35
5-17. Printed Wiring Board

- MAIN Board (Component side) - ................................. 36

5-18. Printed Wiring Board

- MAIN Board (Conductor side) - .................................. 37

5-19.  Schematic Diagram - MAIN Board (1/4) - .....................   38
5-20.  Schematic Diagram - MAIN Board (2/4) - .....................   39
5-21.  Schematic Diagram - MAIN Board (3/4) - .....................   40
5-22.  Schematic Diagram - MAIN Board (4/4) - .....................   41
5-23.  Printed Wiring Board -DISPLAY Board - ......................   42
5-24.  Schematic Diagram - DISPLAY Board- .........................   43

TABLE OF CONTENTS

5-25.  Printed Wiring Board - DCDC Board - ..........................   44
5-26.  Schematic Diagram - DCDC Board - .............................   45
5-27.  Printed Wiring Board - STANDBY Board - ...................   46
5-28.  Schematic Diagram - STANDBY Board - ......................   47
5-29. Printed Wiring Board

- FRONT JACK PWB Board - ....................................... 48

5-30. Schematic Diagram

- FRONT JACK PWB Board - ....................................... 48

5-31.  Printed Wiring Board - TUNER1 Board - ......................   48
5-32.  Schematic Diagram - TUNER1 Board - .........................   49
5-33.  Printed Wiring Board - POWER KEY Board -...............   50
5-34.  Schematic Diagram - POWER KEY Board - .................   50
5-35.  Printed Wiring Board - HEADPHONE Board - .............   50
5-36.  Schematic Diagram - HEADPHONE Board - ................   50

6. EXPLODED VIEWS

6-1. Case (Entry) Section ....................................................... 73
6-2. DIGITAL

Board

.............................................................. 74

6-3. Front Panel Section ......................................................... 75
6-4. Back Panel Section ......................................................... 76
6-5. Chassis

Section

............................................................... 77

7. ELECTRICAL PARTS LIST

.............................. 78