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STR-DH820
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104
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Service Manual
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Audio
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Sony STR-DH820 Service Manual ▷ View online

SERVICE MANUAL
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
STR-DH820
MULTI CHANNEL AV RECEIVER
9-890-558-02
2011D80-1
© 
2011.04
US Model
Canadian Model
AEP Model
UK Model
Australian Model
Taiwan Model
Ver. 1.1  2011.04
This receiver incorporates Dolby* Digital and Pro Logic Surround and the DTS** Digital Surround System.
*  Manufactured under license from Dolby Laboratories. Dolby, Pro Logic, and the double-D symbol are 
trademarks of Dolby Laboratories.
**  Manufactured under license under U.S. Patent #’s: 5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616; 
6,487,535; 7,212,872; 7,333,929; 7,392,195; 7,272,567 & other U.S. and worldwide patents issued & 
pending. DTS and the Symbol are registered trademarks, & DTS-HD, DTS-HD Master Audio, and the DTS 
logos are trademarks of DTS, Inc. Product includes software. © DTS, Inc. All Rights Reserved.
This receiver incorporates High-Defi nition Multimedia Interface (HDMI
TM
) technology. HDMI, the HDMI
Logo, and High-Defi nition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing 
LLC in the United States and other countries.
The font type (Shin Go R) installed in this receiver is provided by MORISAWA & COMPANY LTD. These 
names are the trademarks of MORISAWA & COMPANY LTD., and the copyright of the font also belongs to 
MORISAWA & COMPANY LTD.
iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of Apple Inc., registered in the U.S. and 
other countries. 
All other trademarks and registered trademarks are of their respective holders. In this manual, ™ and ® marks 
are not specifi ed.
“Made for iPod” and “Made for iPhone” mean that an electronic accessory has been designed to connect 
specifi cally to iPod or iPhone, respectively, and has been certifi ed by the developer to meet Apple performance 
standards.
Apple is not responsible for the operation of this device or its compliance with safety and regulatory standards. 
Please note that the use of this accessory with iPod or iPhone may affect wireless performance.
“x.v.Color (x.v.Colour)” and “x.v.Color (x.v.Colour)” logo are trademarks of Sony Corporation.
“BRAVIA” is a trademark of Sony Corporation.
“PlayStation” is a registered trademark of Sony Computer Entertainment Inc.
“WALKMAN” is a registered trademark of Sony Corporation.
MICROVAULT is a trademark of Sony Corporation.
Windows Media is either a registered trademark or trademark of Microsoft Corporation in the United States and/
or other countries.
MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and Thomson.
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC 
DISTORTION: 
(US model only)
With 8 ohm loads, both channels driven, from 20 Hz –
20,000 Hz; rated 100 watts per channel minimum 
RMS power, with no more than 0.09% total harmonic 
distortion from 250 milliwatts to rated output.
Amplifi er section
US model
1)
Minimum RMS Output Power
(8 ohms, 20 Hz – 20 kHz, THD 0.09%)
 
100 W + 100 W
Stereo Mode Output Power
(8 ohms, 1 kHz, THD 1%)
 
110 W + 110 W
Surround Mode Output Power
2)
(8 ohms, 1 kHz, THD 10%)
 
150 W per channel
CND model
1)
Minimum RMS Output Power
(8 ohms, 20 Hz – 20 kHz, THD 0.09%)
 
95 W + 95 W
Stereo Mode Output Power
(8 ohms, 1 kHz, THD 1%)
 
110 W + 110 W
Surround Mode Output Power
2)
(8 ohms, 1 kHz, THD 10%)
 
150 W per channel
ECE, UK, AUS and TW models
1)
Stereo Mode Output Power
(8 ohms, 1 kHz, THD 1%)
 
100 W + 100 W
Surround Mode Output Power
2)
(8 ohms, 1 kHz, THD 10%)
 
140 W per channel
1)
 Measured under the following conditions:
Area
Power requirements
US, CND, TW
120 V AC, 60 Hz
UK, ECE, AUS
230 V AC, 50 Hz
2)
 Reference power output for front, center, surround, 
surround back and front high speakers. Depending on 
the sound fi eld settings and the source, there may be 
no sound output.
Frequency response
  Analog 
10 Hz – 70 kHz, 
+0.5/–2 dB (with sound fi eld 
and equalizer bypassed)
Input
  Analog 
Sensitivity: 500 mV/ 50 kohms 
S/N
3)
: 96 dB (A, 500 mV
4)
)
  Digital (Coaxial) 
Impedance: 75 ohms
S/N: 100 dB (A, 20 kHz LPF)
  Digital (Optical) 
S/N: 100 dB (A, 20 kHz LPF)
Output (Analog)
  AUDIO OUT 
Voltage: 500 mV/ 1 kohm
  SUBWOOFER 
Voltage: 2 V/1 kohm
Equalizer
  Gain levels 
±10 dB, 1 dB step
3)
 INPUT SHORT (with sound fi eld and equalizer by-
passed).
4)
 Weighted network, input level.
FM tuner section
Tuning range 
87.5 MHz – 108.0 MHz
Antenna (aerial) 
FM wire antenna (aerial)
Antenna (aerial) terminals
75 ohms, unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Area
Tuning scale
10 kHz step 
9 kHz step
US, CND
530 kHz – 
531 kHz –
1,710 kHz 
1,710 kHz
UK, ECE, AUS, 
TW
 – 
531 kHz –
 1,602 
kHz
Antenna (aerial) 
Loop antenna (aerial)
Intermediate frequency  450 kHz
Video section
Inputs/Outputs
 Video: 
1 Vp-p/75 ohms
  COMPONENT VIDEO:
Y: 1 Vp-p, 75 ohms
P
B
: 0.7 Vp-p, 75 ohms
P
R
: 0.7 Vp-p, 75 ohms
80 MHz HD Pass Through
iPhone/iPod section
DC 5V 1.0 A MAX
USB section
Supported bit rate* 
MP3 (MPEG 1 Audio 
Layer-3):
32 kbps – 320 kbps, VBR
WMA: 48 kbps – 192 kbps
AAC: 48 kbps – 320 kbps 
*Compatibility with all 
encoding/writing software,
recording devices and 
recording media cannot be
guarantee.
Transfer speed 
Full-speed
Supported USB device 
Mass Storage Class
Maximum current 
500 mA
General
Power requirements
Area
Power requirements
US, CND, TW
120 V AC, 60 Hz
UK, ECE, AUS
230 V AC, 50/60 Hz
Power consumption 
240 W
Power consumption (during standby mode)
0.3 W (When “Ctrl for 
HDMI” is set to “OFF”)
Dimensions (width/height/depth) (Approx.)
430 mm × 158 mm × 
322.6 mm (17 in × 6 1/4 in × 
12 3/4 in) including 
projecting parts and controls
Mass (Approx.) 
8.5 kg (18 lb 12 oz)
– Continued on next page –
STR-DH820
2
Supplied accessories
• 
Operating Instructions
• 
Quick Setup Guide
• 
GUI Menu List
• 
FM wire antenna (aerial) (1)
• 
AM loop antenna (aerial) (1)
• 
Remote control (1)
–  RM-AAP061 (US and CND models only)
–  RM-AAP062 (Other models)
• 
R6 (size AA) batteries (2)
• 
Optimizer microphone (ECM-AC2) (1)
Design and specifi cations are subject to change without notice.
Halogenated fl ame retardants are not used in the certain printed 
wiring boards.
• Abbreviation
AUS  : Australian model
CND : Canadian model
ECE  : Continental European, East European and Russian  
   
  models
TW  : Taiwan model
NOTES ON CHIP COMPONENT REPLACEMENT
• 
Never reuse a disconnected chip component.
• 
Notice that the minus side of a tantalum capacitor may be 
damaged by heat.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, 
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and 
from all exposed metal parts to any exposed metal part having a 
return to chassis, must not exceed 0.5 mA (500 microamperes.). 
Leakage current can be measured by any one of three methods.
1.  A commercial leakage tester, such as the Simpson 229 or RCA 
WT-540A. Follow the manufacturers’ instructions to use these 
instruments.
2.  A battery-operated AC milliammeter. The Data Precision 245 
digital multimeter is suitable for this job.
3.  Measuring the voltage drop across a resistor by means of a 
VOM or battery-operated AC voltmeter. The “limit” indication 
is 0.75 V, so analog meters must have an accurate low-voltage 
scale. The Simpson 250 and Sanwa SH-63Trd are examples 
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable.
(See Fig. A)
1.5 k
Ω
0.15 
μF
AC 
voltmeter 
(0.75 V) 
To Exposed Metal 
Parts on Set 
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 
0 OR DOTTED LINE  
WITH MARK 
0 ON THE SCHEMATIC DIAGRAMS AND IN 
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS 
 
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS 
 
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT  
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 
0 SUR 
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES 
P I È C E S   S O N T   C R I T I Q U E S   P O U R   L A  S É C U R I T É   D E 
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS 
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT 
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉ-
MENTS PUBLIÉS PAR SONY.
STR-DH820
3
1. 
SERVICING  NOTES
  .............................................   3
2. DISASSEMBLY
2-1.   Disassembly Flow ...........................................................   5
2-2.   Case .................................................................................   5
2-3.   D-VIDEO Board .............................................................   6
2-4.   Front Panel Block ...........................................................   7
2-5.   Tuner (FM/AM) ..............................................................   7
2-6.   DIGITAL Board ..............................................................   8
2-7.   Back Panel Block ............................................................   8
2-8.   CONNECTION Board ....................................................   9
2-9.   Main Block .....................................................................   9
2-10.  MAIN Board ...................................................................   10
3. 
TEST  MODE 
 ............................................................   11
4. 
ELECTRICAL  ADJUSTMENT 
 ...........................   13
5. DIAGRAMS
5-1.  Block Diagram - TUNER/AUDIO Section - ..................   15
5-2.  Block Diagram - DIGITAL, DSP Section - ....................   16
5-3.  Block Diagram - A VIDEO Section - .............................   17
5-4.  Block Diagram - D-VIDEO Section - .............................   18
5-5.  Block Diagram - KEY/DISPLAY/USB Section -...........   19
5-6.  Block Diagram - POWER KEY Section - ......................   20
5-7.  Printed Wiring Board - DIGITAL Board (Side A) - .......   22
5-8.  Printed Wiring Board - DIGITAL Board (Side B) - .......   23
5-9.  Schematic Diagram - DIGITAL Board (1/4) - ................   24
5-10.  Schematic Diagram - DIGITAL Board (2/4) - ................   25
5-11.  Schematic Diagram - DIGITAL Board (3/4) - ................   26
5-12.  Schematic Diagram - DIGITAL Board (4/4) - ................   27
5-13.  Printed Wiring Board - MAIN Board - ...........................   28
5-14.  Schematic Diagram - MAIN Board (1/4) - .....................   29
5-15.  Schematic Diagram - MAIN Board (2/4) - .....................   30
5-16.  Schematic Diagram - MAIN Board (3/4) - .....................   31
5-17.  Schematic Diagram - MAIN Board (4/4) - .....................   32
5-18.  Printed Wiring Board - D-VIDEO Board (Side A) - ......   33
5-19.  Printed Wiring Board - D-VIDEO Board (Side B) - ......   34
5-20.  Schematic Diagram - D-VIDEO Board (1/5) - ...............   35
5-21.  Schematic Diagram - D-VIDEO Board (2/5) - ...............   36
5-22.  Schematic Diagram - D-VIDEO Board (3/5) - ...............   37
5-23.  Schematic Diagram - D-VIDEO Board (4/5) - ...............   38
5-24.  Schematic Diagram - D-VIDEO Board (5/5) - ...............   39
5-25.  Printed Wiring Board - DSP Board - ..............................   40
5-26.  Schematic Diagram - DSP Board (1/2) - ........................   41
5-27.  Schematic Diagram - DSP Board (2/2) - ........................   42
5-28.  Printed Wiring Board - A VIDEO Board - ......................   43
5-29.  Schematic Diagram - A VIDEO Board - .........................   44
5-30.  Printed Wiring Board - CONNECTION Board - ............   45
5-31.  Schematic Diagram - CONNECTION Board - ..............   45
5-32.  Printed Wiring Board - STANDBY Board - ...................   46
5-33.  Schematic Diagram - STANDBY Board - ......................   47
5-34.  Printed Wiring Boards - PANEL Section - .....................   48
5-35.  Schematic Diagram - PANEL Section - ..........................   49
5-36.  Printed Wiring Board - DCDC Board - ..........................   50
5-37.  Schematic Diagram - DCDC Board - .............................   51
5-38.  Printed Wiring Board - USB Board - ..............................   52
5-39.  Schematic Diagram - USB Board - .................................   53
5-40.  Printed Wiring Board - HEADPHONE Board - .............   54
5-41.  Schematic Diagram - HEADPHONE Board - ................   54
5-42.  Printed Wiring Board - TEMP-SENSOR Board - ..........   54
5-43.  Schematic Diagram - TEMP-SENSOR Board - .............   54
6. 
EXPLODED  VIEWS
6-1.   Case Section ....................................................................   76
6-2.   DIGITAL Board Section .................................................   77
6-3.   Front Panel Section .........................................................   78
6-4.   Back Panel Section .........................................................   79
6-5.   Chassis Section ...............................................................   80
7. 
ELECTRICAL  PARTS  LIST
   ..............................   81
TABLE  OF  CONTENTS
SECTION  1
SERVICING  NOTES
MODEL IDENTIFICATION
–BACK PANEL–
Model
Part No.
US
4-261-847-0[]
CND
4-261-847-1[]
UK, AUS, ECE
4-261-847-2[]
TW
4-261-847-4[]
• 
Abbreviation
 
AUS 
: Australian model
 
CND 
: Canadian model
 
ECE 
: Continental European, East European and Russian models
 
TW 
: Taiwan model
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)
 : LEAD  FREE  MARK
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  IC2104  ON  THE  DIGITAL  
BOARD
IC2104 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  IC3500  AND  IC3501  ON  
THE  D-VIDEO  BOARD
IC3500 and IC3501 on the D-VIDEO board cannot exchange with 
single. When these parts on the D-VIDEO board are damaged, 
exchange the entire mounted board.
NOTE  OF  REPLACING  THE  IC5001  ON  THE  DSP  
BOARD
IC5001 on the DSP board cannot exchange with single. When this 
part on the DSP board is damaged, exchange the entire mounted 
board.
Part No.
Ver. 1.1
STR-DH820
4
USB FAIL
An over current from the 
 (USB) port was 
detected. The receiver will automatically 
turn off after a few seconds. Check the 
iPhone/iPod or USB device, then unplug it 
and turn on the power again.
For other messages, see “Message list after 
Auto Calibration measurement”, “iPhone/iPod 
message list” and “USB message list”. 
If there is a malfunction, a message appears on 
the display panel. You can check the condition 
of the system by the message. If any problem 
persists, consult your nearest Sony dealer. 
PROTECTOR
Irregular current is output to the speakers, or 
the receiver is covered and ventilation holes 
are blocked. The receiver will automatically 
turn off after a few seconds. Check the 
speaker connection and turn on the power 
again.
Error messages
Clearing the memory
Initializing the receiver
Before using the receiver for the first time, 
initialize the receiver by performing the 
following procedure. This procedure can also 
be used to revert back to the factory default 
settings. 
Be sure to use the buttons on the receiver to 
perform this operation.
1
Press 
?/1 to turn off the 
receiver.
2
Hold down 
?/1 for 5 seconds.
The “CLEARING” appears on the 
display panel for a while, then changes to 
“CLEARED !”.
Changes or adjustments made to the 
settings are now reset to the defaults.
?/1
Resetting sound fields to 
the default settings
Be sure to use the buttons on the receiver to 
perform this operation.
1
Press 
?/1 to turn off the 
receiver.
2
While holding down MUSIC, 
press 
?/1.
“S.F. CLEAR” appears on the display 
panel and all sound fields are reset to their 
default setting.
?/1
MUSIC
When error codes appear
Message list after Auto 
Calibration measurement
Tip
Depending on the position of the subwoofer, the 
measurement results may vary. However, there will 
be no problems even if you continue to use the 
receiver with that value.
Display and explanation
Error Code 31
The SPEAKERS is set to off. Set to other speaker 
settings and perform the Auto Calibration again.
Error Code 32
None of the speakers were detected. Make sure that 
the optimizer microphone is connected properly 
and perform the Auto Calibration again. 
If the optimizer microphone is connected properly 
but the error code still appears, the optimizer 
microphone cable may be damaged.
Error Code 33
s None of the front speakers are connected or only 
one front speaker is connected.
s The optimizer microphone is not connected.
s Either the surround left or surround right speaker 
is not connected.
s Surround back speakers or front high speakers are 
connected even though surround speakers are not 
connected. Connect the surround speaker(s) to the 
SPEAKERS SURROUND terminals.
s The surround back speaker is connected only to 
the SPEAKERS SURROUND BACK/FRONT 
HIGH/BI-AMP/FRONT B R terminals. When 
you connect only one surround back speaker, 
connect it to the SPEAKERS SURROUND 
BACK/FRONT HIGH/BI-AMP/FRONT B L 
terminals.
s Either the front left high or front right high 
speaker is not connected.
Warning 40
The measurement process has completed with high 
noise level detection. You may be able to achieve 
better results if you try in a quiet environment again.
Warning 41
Warning 42
The input from the microphone is too big.
s The distance between the speaker and the 
microphone may be too close. Set them apart and 
perform the measurement again.
Warning 43
The distance and position of a subwoofer cannot be 
detected. This may be caused by noise. Try to 
perform the measurement in a quiet environment.
No Warning
There is no warning information.
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Sony STR-DH820 Service Manual ▷ Download

  • DOWNLOAD Sony STR-DH820 Service Manual ↓ Size: 7.02 MB | Pages: 104 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony STR-DH820 in PDF for free, which will help you to disassemble, recover, fix and repair Sony STR-DH820 Audio. Information contained in Sony STR-DH820 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.