STR-DH800 - Sony Audio Service Manual (repair manual). Page 3

  .............................................   3

2-1.   Disassembly Flow ...........................................................   5
2-2.   Case .................................................................................   5
2-3.   Front Panel Block ...........................................................   6
2-4.   Back Panel Block ............................................................   6
2-5.   DIGITAL Board ..............................................................   7
2-6.   VIDEO Board .................................................................   7
2-7.   Main Block .....................................................................   8
2-8.   MAIN Board ...................................................................   8

TEST  MODE 

 ............................................................   9

ELECTRICAL  CHECK 

 .........................................   11

5-1.  Block Diagram - MAIN Section - ...................................   12
5-2.  Block Diagram - HDMI Section - ...................................   13
5-3.  Block Diagram - DSP, S-AIR, SIRIUS Section - ...........   14
5-4.  Block Diagram - AUDIO Section - .................................   15
5-5. Block 

Diagram 

 

- PANEL, POWER SUPPLY Section - ...........................   16

5-6. Printed 

Wiring 

Board 

 

- DIGITAL Board (Component Side) - ...........................   18

5-7. Printed 

Wiring 

Board 

 

- DIGITAL Board (Conductor Side) - .............................   19

5-8.  Schematic Diagram - DIGITAL Board (1/4) - ................   20
5-9.  Schematic Diagram - DIGITAL Board (2/4) - ................   21
5-10.  Schematic Diagram - DIGITAL Board (3/4) - ................   22
5-11.  Schematic Diagram - DIGITAL Board (4/4) - ................   23
5-12.  Printed Wiring Board - MAIN Board - ...........................   24
5-13.  Schematic Diagram - MAIN Board (1/3) - .....................   25
5-14.  Schematic Diagram - MAIN Board (2/3) - .....................   26
5-15.  Schematic Diagram - MAIN Board (3/3) - .....................   27
5-16.  Printed Wiring Board - HDMI Section (1/2) - ................   28
5-17.  Printed Wiring Boards - HDMI Section (2/2) - ..............   29
5-18.  Schematic Diagram - HDMI Section (1/2) - ...................   30
5-19.  Schematic Diagram - HDMI Section (2/2) - ...................   31
5-20.  Printed Wiring Board - DSP Board - ..............................   32
5-21.  Schematic Diagram - DSP Board - .................................   33
5-22. Printed Wiring Board 
 

- S-AIR Board (Except Russian model) - .......................   34

5-23. Schematic Diagram 
 

- S-AIR Board (Except Russian model) - .......................   34

5-24.  Printed Wiring Board - VIDEO Board - .........................   34
5-25.  Schematic Diagram - VIDEO Board - ............................   35
5-26.  Printed Wiring Board - CONNECTION Board - ............   36
5-27.  Schematic Diagram - CONNECTION Board - ..............   37
5-28.  Printed Wiring Boards - PANEL Section - .....................   38
5-29.  Schematic Diagram - PANEL Section - ..........................   39
5-30.  Printed Wiring Board - STANDBY DCDC Board - .......   40
5-31.  Schematic Diagram - STANDBY DCDC Board - ..........   41
5-32. Printed Wiring Board 
 

- THERMAL SENSOR Section - ...................................   42

5-33. Schematic Diagram 
 

- THERMAL SENSOR Section - ...................................   42

6-1.   Case Section ....................................................................   61
6-2.   Front Panel Section .........................................................   62
6-3.   Back Panel Section .........................................................   63
6-4.   Chassis Section ...............................................................   64
6-5.   Heatsink Section .............................................................   65

  ..............................   66

Accessories are given in the last of the electrical parts list.

UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution:  Some printed circuit boards may not come printed with 

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.
•  Unleaded solder melts at a temperature about 40 °C higher 

than ordinary solder.

 

Ordinary soldering irons can be used but the iron tip has to be 
applied to the solder joint for a slightly longer time.

 

Soldering irons using a temperature regulator should be set to 
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if 

the heated tip is applied for too long, so be careful!

• Strong 

viscosity

 

Unleaded solder is more viscous (sticky, less prone to fl ow) 
than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.

•  Usable with ordinary solder
 

It is best to use only unleaded solder but unleaded solder may 
also be added to ordinary solder.

NOTE  OF  REPLACING  THE  IC2022  ON  THE  DIGITAL 
BOARD
IC2022 on the DIGITAL board cannot exchange with single. When 
this part on the DIGITAL board is damaged, exchange the entire 
mounted board.

NOTE  OF  REPLACING  THE  IC3506  AND  IC3508  ON  
THE  HDMI  BOARD
IC3506 and IC3508 on the HDMI board cannot exchange with sin-
gle. When these parts on the HDMI board are damaged, exchange 
the entire mounted board.

NOTE  OF  REPLACING  THE  IC5021  ON  THE  DSP  
BOARD
IC5021 on the DSP board cannot exchange with single. When this 
part on the DSP board is damaged, exchange the entire mounted 
board.

Note: Refer to supplement-1 for the DIGITAL, MAIN and STAND-

BY DCDC boards of printed wiring board, schematic dia-
gram and electrical parts list of Russian, Australian, Tai-
wan and Thai models.