DOWNLOAD Sony STR-DH520 Service Manual ↓ Size: 4.8 MB | Pages: 73 in PDF or view online for FREE

Model
STR-DH520
Pages
73
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4.8 MB
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PDF
Document
Service Manual
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Device
Audio
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str-dh520.pdf
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Sony STR-DH520 Service Manual ▷ View online

SERVICE MANUAL
Published by Sony EMCS (Malaysia) PG Tec
Sony Corporation
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-Definition Multimedia Interface (HDMI™) 
technology. HDMI, the HDMI Logo, and High-Definition Multimedia 
Interface are trademarks or registered trademarks of HDMI Licensing LLC 
in the United States and other countries.
“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. 
9-890-559-04
2011J80-1
© 
2011.10
SPECIFICATIONS
MULTI CHANNEL AV RECEIVER
US Model
Canadian Model
AEP Model
UK Model
Australian Model
Taiwan Model
Ver. 1.3  2011.10
STR-DH520
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(US model only)
With 8 ohm loads, both channels driven, from 20 – 20,000 Hz; rated 90 
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%)
   
90 W + 90 W
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%)
   
130 W per channel
CND, ECE, UK, AUS and TW models
1)
Minimum RMS Output Power (8 ohms, 20 Hz – 20 kHz, THD 0.09%)
   
85 W + 85 W
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%)
   
130 W per channel
– Continued on next page –
STR-DH520
2
1)
  Measured under the following conditions:
Area Power 
requirements
US, CND, TW 
120 V AC, 60 Hz
ECE, UK, AUS  
230 V AC, 50 Hz
2)
  Reference power output for front, center, surround, surround back and
  front high speakers.
  Depending on the sound field settings and the source, there may be no
 sound 
output.
Frequency response
  Analog 
10 Hz – 70 kHz,
   
+0.5/–2 dB (with sound
   
field and equalizer bypassed)
Input
  Analog (PORTABLE IN) 
Sensitivity: 1 V/50 kohms
  
S/N
3)
: 96 dB
   
(A, 500 mV
4)
)
  Analog (Except PORTABLE IN) 
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 
±6 dB, 1 dB step
3)
  INPUT SHORT (with sound field and equalizer bypassed).
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
ECE, UK, 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
General
Power requirements
Area Power 
requirements
US, CND, TW 
120 V AC, 60 Hz
ECE, UK, AUS 
230 V AC, 50/60 Hz
Power consumption 
240W
Power consumption (during standby mode)
   
0.3 W (When “CTRL.HDMI” is set to
  
“CTRL 
OFF”)
Dimensions (width/height/depth) (Approx.)
   
430 mm × 157.5 mm × 322 mm
   
(17 in × 6 
1/4
 in × 12 
3/4 
in) including
   
projecting parts and controls
Mass (Approx.) 
7.6 kg (16 lb 13 oz)
Supplied accessories
 
Operating Instructions
 
Quick Setup Guide
 
FM wire antenna (aerial) (1)
 
 
AM loop antenna (aerial) (1)
 
 
Remote control (1)
 
– RM-AAU104 (US and CND models only)
 
– RM-AAU105 (Other models)
 
 
R6 (size AA) batteries (2)
 
 
Optimizer microphone (ECM-AC2)
  (ECE, UK, AUS and TW models only) (1)
 
Design and specifications are subject to change without notice.
• Halogenated flame 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
STR-DH520
3
SAFETY  CHECK-OUT
After correcting the original service problem, perform the following
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.
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-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  
PIÈCES  SONT  CRITIQUES  POUR  LA  SÉCURITÉ  DE  FONC-
TIONNEMENT.  NE  REMPLACER  CES  COMPOSANTS  QUE  
PAR  DES  PIÈCES  SONY  DONT  LES  NUMÉROS  SONT  DON-
NÉS  DANS  CE  MANUEL  OU  DANS  LES  SUPPLÉMENTS  
PUBLIÉS  PAR  SONY.
MODEL IDENTIFICATION
–BACK PANEL–
 
   
Part No.
Model
Part No.
US
4-261-825-0[]
CND
4-261-825-1[]
UK, ECE, AUS
4-261-825-2[]
TW
4-261-825-6[]
• 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 IC3500 AND IC3501 ON THE 
HDMI RE PC BOARD
IC3500 and IC3501 on the HDMI RE PC board cannot exchange 
with single. When these parts on the HDMI RE PC board are 
damaged, exchange the entire mounted board.
NOTE OF REPLACING THE IC2106 ON THE DIGITAL 
BOARD
IC2106 on the DIGITAL board cannot exchange with single. 
When this part on the DIGITAL board is damaged, exchange the 
entire mounted board.
Ver. 1.1
STR-DH520
4
1. DISASSEMBLY
1-1. Case 
.................................................................................   5
1-2.  HDMI RE PC Board .......................................................   6
1-3.  Front Panel Section .........................................................   6
1-4.  Back Panel Section .........................................................   7
1-5. DIGITAL 
Board 
..............................................................   7
1-6.  MAIN Board Section ......................................................   8
1-7. MAIN 
Board 
...................................................................   8
2. TEST MODE 
 ..................................................................   9
3. FM TUNER CHECK 
 ....................................................   11
4. DIAGRAMS
4-1.   Block Diagram – TUNER/AUDIO Section – .................   12
4-2.   Block Diagram – DIGITAL Section – .............................   13
4-3.   Block Diagram –
 
STANDBY-A VIDEO MT PC Section – ........................   14
4-4.   Block Diagram – HDMI RE PC Section – ......................   15
4-5.   Block Diagram – KEY/DISPLAY Section – ...................   16
4-6.   Block Diagram – POWER KEY Section – ......................   17
4-7.   Printed Wiring Board – MAIN Board – ..........................   19
4-8.   Schematic Diagram – MAIN Board (1/4) – ....................   20
4-9.   Schematic Diagram – MAIN Board (2/4) – ....................   21
4-10. Schematic Diagram – MAIN Board (3/4) – ....................   22
4-11. Schematic Diagram – MAIN Board (4/4) – ....................   23
4-12. Printed Wiring Board – DIGITAL Board (Side A) – .......   24
4-13. Printed Wiring Board – DIGITAL Board (Side B) – .......   25
4-14. Schematic Diagram – DIGITAL Board (1/4) – ...............   26
4-15. Schematic Diagram – DIGITAL Board (2/4) – ...............   27
4-16. Schematic Diagram – DIGITAL Board (3/4) – ...............   28
4-17. Schematic Diagram – DIGITAL Board (4/4) – ...............   29
4-18. Printed Wiring Board – 
 
STANDBY-A VIDEO MT PC Board – ..........................   30
4-19. Schematic Diagram –
 
STANDBY-A VIDEO MT PC Board – ..........................   31
4-20. Printed Wiring Board – HDMI RE PC Board (Side A) – ....   32
4-21. Printed Wiring Board – HDMI RE PC Board (Side B) – ....   33
4-22. Schematic Diagram – HDMI RE PC Board (1/3) – ........   34
4-23. Schematic Diagram – HDMI RE PC Board (2/3) – ........   35
4-24. Schematic Diagram – HDMI RE PC Board (3/3) – ........   36
4-25. Printed Wiring Board – DCDC Board – ..........................   37
4-26. Schematic Diagram – DCDC Board – .............................   38
4-27. Printed Wiring Board – HEADPHONE Board – .............   38
4-28. Schematic Diagram – HEADPHONE Board – ...............   38
4-29. Printed Wiring Boards – PANEL Section – .....................   39
4-30. Schematic Diagram – PANEL Section – .........................   40
4-31. Printed Wiring Board – TEMP-SENSOR Board – ..........   41
4-32. Schematic Diagram – TEMP-SENSOR Board –.............   41
5. EXPLODED VIEWS
5-1.   Case Section ....................................................................   53
5-2.   Front Panel Section ..........................................................   54
5-3.   Back Panel Section ..........................................................   55
5-4.   Chassis Section ................................................................   56
6. ELECTRICAL PARTS LIST 
 .....................................   57
TABLE  OF  CONTENTS
Ver. 1.3
Note:  Refer to supplement-1 for the printed wiring board, 
schematic diagram and electrical parts list of HDMI RE PC 
board (Suffix-21), Digital board (Suffix-21), DCDC board 
(Suffix-21), MAIN board (Suffix-24) and STANDBY-A 
VIDEO MT PC board (Suffix-24).
NOTICE OF BOARD VERSION CHECK
HDMI RE PC board (Suffi x-11), Digital board (Suffi x-11), DCDC 
board (Suffi x-11), MAIN board (Suffi x-13) and STANDBY-A 
VIDEO MT PC board (Suffi x-13) is synchronised. When any of 
the mounted board replacement is necessary, check the defective 
board version and order the same version of mounted board in part 
list.
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  • Here you can View online or download the Service Manual for the Sony STR-DH520 in PDF for free, which will help you to disassemble, recover, fix and repair Sony STR-DH520 Audio. Information contained in Sony STR-DH520 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.