SERVICE MANUAL
Published by Sony EMCS (Malaysia) PG Tec
Sony Corporation
MULTI CHANNEL AV RECEIVER
US Model
Canadian Model
AEP Model
UK Model
Australian Model
STR-DH550/DH750
E Model
STR-DH550
Brazillian Model
Mexican Model
Taiwan Model
STR-DH750
Ver. 1.2 2015.04
STR-DH550/DH750
9-890-636-03
2015D80-1
©
2015.04
Photo: STR-DH750
SPECIFICATIONS
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This receiver incorporates Dolby* Digital and Pro
Logic Surround and the DTS** Digital Surround
System.
* Manufactured under license from Dolby
Laboratories. Dolby, Pro Logic, Surround EX,
and the double-D symbol are trademarks of Dolby
Laboratories.
** For DTS patents, see http://patents.dts.com.
Manufactured under license from DTS Licensing
Limited. DTS, DTS-HD, the Symbol, & DTS and
the Symbol together are registered trademarks, and
DTS-HD Master Audio is a trademark of DTS, Inc.
© DTS, Inc. All Rights Reserved.
This receiver incorporates High-Definition Multimedia
Interface (HDMI™) technology. The terms HDMI and
HDMI High-Definition Multimedia Interface, and the
HDMI Logo are trademarks or registered trademarks
of HDMI Licensing LLC in the United States and
other countries.
iPhone, iPod, iPod classic, iPod nano, and iPod touch
are trademarks of Apple Inc., registered in the U.S.
and other countries. App Store is a service mark of
Apple Inc.
All other trademarks and registered trademarks are
of their respective holders. In this manual, ™ and ®
marks are not specified.
“Made for iPod” and “Made for iPhone” mean that
an electronic accessory has been designed to connect
specifically to iPod or iPhone, respectively, and
has been certified 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.
Windows Media is either a registered trademark or
trademark of Microsoft Corporation in the United
States and/or other countries.
This product is protected by certain intellectual property
rights of Microsoft Corporation. Use or distribution of
such technology outside of this product is prohibited
without a license from Microsoft or an authorized
Microsoft subsidiary.
MPEG Layer-3 audio coding technology and patents
licensed from Fraunhofer IIS and Thomson.
“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 Com-
puter Entertainment Inc.
“WALKMAN” and “WALKMAN” logo are registered
trademarks of Sony Corporation.
MICROVAULT is a trademark of Sony Corporation.
MHL, Mobile High-Definition Link and the MHL
Logo are trademarks or registered trademarks of MHL
Licensing, LLC.
The Bluetooth
®
word mark and logos are registered
trademarks owned by Bluetooth SIG, Inc. and any use
of such marks by Sony Corporation is under license.
Other trademarks and trade names are those of their
respective owners.
© 2013 CSR plc and its group companies. The aptX
®
mark and the aptX logo are trade marks of CSR plc or
one of its group companies and may be registered in
one or more jurisdictions.
The N Mark is a trademark or registered trademark
of NFC Forum, Inc. in the United States and in other
countries.
Android™ is a trademark of Google Inc.
Google Play™ is a trademark of Google Inc.
AUDIO POWER
SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
(USA model only)
With 6 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.
Amplifier section
Mexico model
Minimum RMS Output Power
1)
(6 ohms, 20 Hz – 20 kHz, THD 0.09%)
90 W + 90 W
Stereo Mode Output Power
1)
(6 ohms, 1 kHz, THD 1%)
100 W + 100 W
Surround Mode Output Power
1) 2)
(6 ohms, 1 kHz, THD 0.9%)
140 W per channel
India model
Minimum RMS Output Power
1)
(6 ohms, 20 Hz – 20 kHz, THD 0.09%)
80 W + 80 W
Stereo Mode Output Power
1)
(6 ohms, 1 kHz, THD 1%)
90 W + 90 W
Surround Mode Output Power
1) 2)
(6 ohms, 1 kHz, THD 0.9%)
115 W per channel
Other models
Minimum RMS Output Power
1)
(6 ohms, 20 Hz – 20 kHz, THD 0.09%)
90 W + 90 W
Stereo Mode Output Power
1)
(6 ohms, 1 kHz, THD 1%)
105 W + 105 W
Surround Mode Output Power
1) 2)
(6 ohms, 1 kHz, THD 0.9%)
145 W per channel
1)
Measured under the following conditions:
Area Power requirements
US, CND,
TW
120 V AC, 60 Hz
MX 127 V AC, 60 Hz
AUS, AEP,
UK
230 V AC, 50 Hz
BR 220 V AC, 60 Hz
E12 240 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 – 100 kHz, +0.5/–2 dB (with
sound fi eld and equalizer bypassed)
Input
Analog
Sensitivity: 500 mV/50 kilohms
S/N
3)
: 105 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)
SUBWOOFER
Voltage: 2 V/1 kilohm
Equalizer
Gain levels
±10 dB, 1 dB step
3)
INPUT SHORT (with sound fi eld 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
AM tuner section
Tuning range
Area Tuning scale
10 kHz step 9 kHz step
US, CND,
MX, BR
530 kHz – 531 kHz –
1,710 kHz 1,710 kHz
AUS, AEP,
UK, TW, E12
– 531 kHz –
1,602 kHz
Antenna (aerial)
Loop antenna (aerial)
Video section
Inputs/Outputs
Video:
1 Vp-p, 75 ohms
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