Sony STR-DE225 Service Manual

STR-DE225/DE325
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SERVICE MANUAL
Manufactured under license from Dolby Laboratories
Licensing Corporation.
"DOLBY", "PRO LOGIC" and the double-D symbol are
trademarks of Dolby Laboratories Licensing Corporation.
TE
L 13942296513
Amplifier section
Power output
Stereo mode (DIN 1 kHz, 4 ohms)
STR-DE325: 90 W + 90 W
STR-DE225: 40 W + 40 W
Surround (DIN 1 kHz, 4 ohms)
mode Front: STR-DE325: 90W/ch
STR-DE225: 40W/ch
Centre: STR-DE325: 90W
STR-DE225: 40W
(only in PRO LOG IC MODE)
REAR: STR-DE325:
(DIN 1 kHz, 4ohms) 90 W
STR-DE225: (DIN 1 kHz,
4ohms) 40 W
5.1/DVD Front: 90 W/ch
INPUT * mode (DIN 1 kHz, 4 ohms)
Centre: 90 W
(DIN 1 kHz, 4 ohms)
Rear: 45 W/ch
(DIN 1 kHz, 8 ohms)
(except STR-DE225)
Frequency PHONO: RIAA(except STR-DE225)
response equalization curve ±0.5 dB
TV / LD, CD, TAPE / MD,
VIDEO, 5.1/DVD INPUT*:
10Hz - 50kHz ±1dB
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Photo : STR-DE225
Input
PHONO
(STR-DE325)
(MM)
CD,
5.1/DVD
INPUT*
TAPE/MD,
TV/LD,
VIDEO
Outputs
Muting
BASS BOOST
TONE
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SPECIFICATIONS
Q Q
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Sensitivity Impedance S/N
(Weighting
network,
input level)
50 74 dB
2.5mV kilohms 72 dB**
(A, 2.5 mV)
200 mV
50 82 dB
kilohms 82 dB**
**'78IHF
TAPE/MD REC OUT:
Voltage: 150 mV,
Impedance: 10 kilohms
VIDEO AUDIO OUT:
Voltage: 150 mV,
Impedance: 10 kilohms
WOOFER/MIX AUDIO
OUT: Voltage: 2V
Impedance: 10 kilohms
PHONES: Accepts low and high
impedance headphones
Full mute
+10dB at 70 Hz
±8dB at 100 Hz and 10 kHz
FM STEREO/FM-AM RECEIVER
co
.
9 4 2 8
AEP Model
Canadian Model
STR-DE225/DE325
US Model
E Model
Australian Model
Chinese Model
UK Model
0 5 8 2 9 9 4 2 8
FM tuner section
Tuning range 87.5 – 108.0 MHz
Aerial terminals 75 ohms, unbalanced
Sensitivity Mono: 18.3 dBf, 2.2µV /75 ohms
Stereo: 38.3 dBf, 22.5µV /75
ohms
Usable sensitivity 11.2 dBf, 1V /75 ohms (IHF)
S/N Mono: 76 dB
Stereo: 70dB
Harmonic Mono: 0.3 %
distortion at Stereo: 0.5 %
1 kHz
Separation 45dB at 1 kHz
Frequency 30 Hz – 15kHz +0.5
–2
response
Selectivity 60 dB at 400 kHz
AM tuner section
Tuning range 531 – 1602 kHz
Aerial Loop aerial
Usable sensitivity 50 dB/m (at 999 kHz)
S/N 54 dB(at 50 mV/m)
Harmonic 0.5%(50 mV/m, 400Hz)
distortion
Selectivity 35 dB
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STR-DE325
STR-DE225
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dB