Read Sony STR-DG520 Service Manual online
SERVICE MANUAL
Published by Sony Techno Create Corporation
Sony Corporation
Audio Business Group
SPECIFICATIONS
MULTI CHANNEL AV RECEIVER
9-887-995-02
2008E04-1
©
2008.05
US Model
Canadian Model
AEP Model
UK Model
Australian Model
Taiwan Model
Ver. 1.1 2008.05
STR-DG520
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(Models of area code US 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.
(Models of area code US 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
Models of area code US, CND
Models of area code US, CND
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/ch
Models of area code AEP, UK, AUS, ECE
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/ch
Models of area code TW
1)
Minimum RMS Output Power (8 ohms, 20 Hz – 20 kHz, THD 0.09%)
70 W + 70 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/ch
– Continued on next page –
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;6,487,535
& other U.S. and worldwide patents issued & pending.
DTS and DTS Digital Surround are registered trademarks and
the DTS logos and Symbol are trademarks of DTS, Inc.
© 1996-2007 DTS, Inc. All Rights Reserved.
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;6,487,535
& other U.S. and worldwide patents issued & pending.
DTS and DTS Digital Surround are registered trademarks and
the DTS logos and Symbol are trademarks of DTS, Inc.
© 1996-2007 DTS, Inc. All Rights Reserved.
This receiver incorporates High-Defi nition Multimedia Interface
(HDMI
(HDMI
TM
) technology.
HDMI, the HDMI logo and High-Defi nition Multimedia Interface
are trademarks or registered trademarks of HDMI Licensing LLC.
are trademarks or registered trademarks of HDMI Licensing LLC.
Photo: Black type
STR-DG520
2
1) Measured under the following conditions:
Area code
Power requirements
US, CND
120 V AC, 60 Hz
AEP, UK, ECE
230 V AC, 50 Hz
AUS
240 V AC, 50 Hz
TW
110 V AC, 60 Hz
2) Reference power output for front, center and surround speakers.
Depending on the sound fi eld settings and the source, there may be
no sound output.
Depending on the sound fi eld settings and the source, there may be
no sound output.
Frequency response
Analog
Analog
10 Hz – 70 kHz
+0.5/–2 dB (with sound
fi eld and tone bypassed)
Inputs
Analog
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
AUDIO OUT
Voltage: 500 mV/10 kohms
SUB WOOFER
Voltage: 2 V/1 kohm
Tone
Gain levels
Gain levels
±6 dB, 1 dB step
3) INPUT SHORT (with sound fi eld and tone bypassed).
4) Weighted network, input level.
FM tuner section
Tuning range
Tuning range
87.5 – 108.0 MHz
Antenna FM
wire
antenna
Antenna terminals
75 ohms, unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Models of area code US, CND
With 10-kHz tuning scale:
Tuning range
Models of area code US, CND
With 10-kHz tuning scale:
530 – 1,710 kHz
5)
With 9-kHz tuning scale:
531 – 1,710 kHz
5)
Models of area code AEP, UK, AUS, ECE, TW
With 9-kHz tuning scale:
With 9-kHz tuning scale:
531 – 1,602 kHz
Antenna Loop
antenna
Intermediate frequency
450 kHz
5) You can change the AM tuning scale to 9 kHz or 10 kHz.After tuning
in any AM station, turn off the receiver. While holding down TUNING
MODE,
in any AM station, turn off the receiver. While holding down TUNING
MODE,
press
?/1. All preset stations will be erased when you change
the tuning scale.To reset the scale to 10 kHz (or 9 kHz), repeat the
procedure.
procedure.
Video section
Inputs/Outputs
Video:
Inputs/Outputs
Video:
1
Vp-p/75
ohms
COMPONENT VIDEO:
Y: 1 Vp-p/75 ohms
P
B
/C
B
: 0.7 Vp-p/
75
ohms
P
R
/C
R
: 0.7 Vp-p/
75
ohms
80 MHz HD Pass Through
General
Power requirements
Area code
Power requirements
US, CND
120 V AC, 60 Hz
AEP, UK, ECE
230 V AC, 50/60 Hz
AUS
240 V AC, 50 Hz
TW
110 V AC, 60 Hz
Power output (DIGTAL MEDIA PORT)
DC OUT :
DC OUT :
5 V, 0.7 A MAX
Power consumption
Area code
Power consumption
US, AEP, UK, AUS, ECE
220 W
CND 300
VA
TW 500
W
Power consumption (during standby mode)
0.3
W
Dimensions (w/h/d) (Approx.)
430 × 157.5 × 318 mm
(16
7/8
× 6
2/8
× 12
5/8
inches) including
projecting parts and controls
Mass (Approx.)
7.7 kg (16 lb 16 oz)
Supplied accessories
Operating Instruction (1)
Quick Setup Guide (1)
FM wire antenna (aerial) (1)
AM loop antenna (aerial) (1)
Remote commander RM-AAU020 (1)
R6 (size-AA) batteries (2)
Optimizer microphone ECM-AC2 (1) (AEP, UK, AUS, ECE, TW)
Operating Instruction (1)
Quick Setup Guide (1)
FM wire antenna (aerial) (1)
AM loop antenna (aerial) (1)
Remote commander RM-AAU020 (1)
R6 (size-AA) batteries (2)
Optimizer microphone ECM-AC2 (1) (AEP, UK, AUS, ECE, TW)
Design and specifi cations are subject to change without notice.
• Abbreviation
AUS :
AUS :
Australian
model
CND :
Canadian
model
ECE :
Continental
European,
East European and
Russian models
TW :
Taiwan
model
Ver. 1.1
STR-DG520
3
Model
Part No.
US
3-279-308-0
[]
CND
3-279-308-1
[]
AEP, UK
3-279-308-2
[]
AUS
3-279-308-3
[]
ECE
3-279-308-4
[]
TW
3-279-308-5
[]
SAFETY CHECK-OUT (US MODEL)
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.
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
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.
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)
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)
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONET 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
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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 COM- POSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COM- POSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
1.5 k
Ω
0.15
μF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Part No.
MODEL IDENTIFICATION
–BACK PANEL–
–BACK PANEL–
• Abbreviation
AUS :
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
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
• 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.
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
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.
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.
also be added to ordinary solder.
Notes on chip component replacement
•
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
aged by heat.
Ver. 1.1
STR-DG520
4
1. GENERAL
Description and location of parts ........................................ 5
2. DISASSEMBLY
2-1. Case
..................................................................................... 8
2-2. Back Panel Section ............................................................. 9
2-3. Front Panel Section ............................................................. 9
2-4. DIGITAL
2-3. Front Panel Section ............................................................. 9
2-4. DIGITAL
Board
................................................................ 10
2-5. MAIN Board Section ........................................................ 10
2-6. STANDBY Board ............................................................. 11
2-6. STANDBY Board ............................................................. 11
3. TEST MODE
.................................................................... 12
4. FM TUNER CHECK
...................................................... 13
5. DIAGRAMS
5-1. Block Diagram – Tuner/Audio Section – .......................... 15
5-2. Block Diagram – Digital Section – .................................... 16
5-3. Block Diagram – Video Section – ..................................... 17
5-4. Block Diagram – HDMI SW Section – ............................. 18
5-5. Block Diagram – Key/Display Section – .......................... 19
5-6. Block Diagram – Power Section – .................................... 20
5-7. Printed Wiring Boards – Main Section – ........................... 22
5-8. Schematic Diagram – Main Section (1/3) – ...................... 23
5-9. Schematic Diagram – Main Section (2/3) – ...................... 24
5-10. Schematic Diagram – Main Section (3/3) – ...................... 25
5-11. Printed Wiring Board – Digital Section (1/2) – ................. 26
5-12. Printed Wiring Board – Digital Section (2/2) – ................. 27
5-13. Schematic Diagram – Digital Section (1/3) – .................... 28
5-14. Schematic Diagram – Digital Section (2/3) – .................... 29
5-15. Schematic Diagram – Digital Section (3/3) – .................... 30
5-16. Printed Wiring Board – Video Section – ........................... 31
5-17. Schematic Diagram – Video Section – .............................. 32
5-18. Printed Wiring Board – HDMI SW Section – ................... 33
5-19. Schematic Diagram – HDMI SW Section – ...................... 34
5-20. Printed Wiring Boards – DCAC, Power Section – ............ 35
5-21. Schematic Diagram – DCAC, Power Section – ................ 35
5-22. Printed Wiring Board – Display Section – ........................ 36
5-23. Schematic Diagram – Display Section – ........................... 37
5-24. Printed Wiring Boards – Power Section – ......................... 38
5-25. Schematic Diagram – Power Section – ............................. 39
5-2. Block Diagram – Digital Section – .................................... 16
5-3. Block Diagram – Video Section – ..................................... 17
5-4. Block Diagram – HDMI SW Section – ............................. 18
5-5. Block Diagram – Key/Display Section – .......................... 19
5-6. Block Diagram – Power Section – .................................... 20
5-7. Printed Wiring Boards – Main Section – ........................... 22
5-8. Schematic Diagram – Main Section (1/3) – ...................... 23
5-9. Schematic Diagram – Main Section (2/3) – ...................... 24
5-10. Schematic Diagram – Main Section (3/3) – ...................... 25
5-11. Printed Wiring Board – Digital Section (1/2) – ................. 26
5-12. Printed Wiring Board – Digital Section (2/2) – ................. 27
5-13. Schematic Diagram – Digital Section (1/3) – .................... 28
5-14. Schematic Diagram – Digital Section (2/3) – .................... 29
5-15. Schematic Diagram – Digital Section (3/3) – .................... 30
5-16. Printed Wiring Board – Video Section – ........................... 31
5-17. Schematic Diagram – Video Section – .............................. 32
5-18. Printed Wiring Board – HDMI SW Section – ................... 33
5-19. Schematic Diagram – HDMI SW Section – ...................... 34
5-20. Printed Wiring Boards – DCAC, Power Section – ............ 35
5-21. Schematic Diagram – DCAC, Power Section – ................ 35
5-22. Printed Wiring Board – Display Section – ........................ 36
5-23. Schematic Diagram – Display Section – ........................... 37
5-24. Printed Wiring Boards – Power Section – ......................... 38
5-25. Schematic Diagram – Power Section – ............................. 39
6. EXPLODED VIEWS
6-1. Case Section ...................................................................... 50
6-2. Front Panel Section ............................................................ 51
6-3. Back Panel Section ............................................................ 52
6-4. Chassis Section .................................................................. 53
6-2. Front Panel Section ............................................................ 51
6-3. Back Panel Section ............................................................ 52
6-4. Chassis Section .................................................................. 53
7. ELECTRICAL PARTS LIST
....................................... 54
TABLE OF CONTENTS