Sony STR-DE725 Service Manual

SERVICE MANUAL
Manufactured under license from Dolby Laboratories Licensing
Corporation.
"DOLBY" the double-D symbol a "AC-3" and "PRO LOGIC"
are trademarks of Dolby Laboratories Licensing Corporation.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 8 ohm loads, both channels driven, from 20 - 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 .
Amplifier section
POWER OUTPUT
Stereo mode (8 ohms 20 Hz –20 kHz, THD 0.09%)
100 W + 100 W
Surround mode (8 ohms at 1 kHz, THD 0.8%)
Front: 100 W/ch
a)
Center : 100 W
a)
Rear : 100 W/ch
a) Depending on the sound field settings and the source, there may be no
sound output.
Dynamic power output
155 W + 155 W, 8 ohms
220 W + 220 W, 4 ohms
Harmonic distortion at rated output
Less than 0.09% (with sound field, tone, and bass
booster bypassed)
Frequency response
PHONO: RIAA
equalization curve
±0.5 dB
CD, TAPE, MD/DAT, TAPE/MD, DVD/LD, TV/DBS,
VIDEO 1 and VIDEO 2 :
10 Hz - 50 kHz +0.5/–2 dB (with sound field, tone,
and bass booster bypassed)
MICROFILM
STR-DE725
SPECIFICATIONS
Inputs (Analog) PHONO:
CD, DVD/LD, TAPE, MD/DAT, TAPE/MD, TV/DBS,
VIDEO 1 and VIDEO 2 :
b)78' IHF
c) Weighted network, input level
Inputs (Digital) DVD/LD:
Outputs TAPE/MD, (REC OUT); VIDEO 1, 2
(AUDIO OUT):
WOOFER:
PHONES:
BASS BOOST +6 dB at 70 Hz
FM STEREO FM-AM RECORDER
US Model
Sensitivity: 2.5 mV
Impedance: 50 kilohms
b) c)
S/N : 75 dB (A, 2.5 mV )
Sensitivity: 150 mV
Impedance: 50 kilohms
S/N b) : 82 dB (A, 150 mV c) )
Sensitivity: –
Impedance: –
S/N: 100 dB (A, 20 kHz LPF)
Voltage: 150 mV
Impedance: 10 kilohms
Voltage: 2 V
Impedance: 1 kilohms
Accepts low - and high-impedance headphones
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