Sony STR-DE845 Service Manual

STR-DE845/DE945

SERVICE MANUAL

Manufactured under license from Dolby labora-
tories. "Dolby", "AC-3", "Pro Logic" and the double-
D symbol ; are trademarks of Dolby Laborato-
ries.
Manufactured under license from Digital Theater
Systems, Inc. US Pat. No. 5,451,942 and other
worldwide patents issued and pending. "DTS" an
d "DTS Digital Surround" are trademarks of Digi-
tal Theater Systems, Inc.
AUDIO POWER

SPECIFICATIONS

POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION:
With 8 ohm loads, both
channels driven, from 20 -
20,000 Hz; rated 110 watts
(STR-DE945) and 100 watts
(STR-DE845) per channel
minimum RMS power,
with no more than 0.09 %
total harmonic distortion
from 250 milliwatts to
rated output (USA model
only).
Amplifier section
POWER OUTPUT
Models of area code U, CA
Rated Power Output at Stereo Mode
(8 ohms 20 Hz – 20 kHz, THD 0.09 %)
STR-DE945: 110 W + 110 W
STR-DE845: 100 W + 100 W
Reference Power Output
(8 ohms 1 kHz, THD 0.7 %)
1)
STR-DE945: FRONT:
110 W + 110 W
1)
CENTER : 110 W
1)
REAR :
110 W + 110 W
1)
STR-DE845: FRONT :
100 W + 100 W
1)
CENTER : 100 W
1)
REAR :
100 W + 100 W
Models of other area code
STR-DE845:
Rated Power Output at Stereo Mode
(8 ohms 1 kHz, THD 0.7 %)
2)
100 W + 100 W
3)
90 W + 90 W
Photo: STR-DE945
SPECIFICATIONS
Reference Power Output
(8 ohms 1 kHz, THD 0.7 %)
1)
FRONT :
100 W + 100 W
1)
CENTER : 100 W
1)
REAR :
100 W + 100 W
(8 ohms 20 Hz – 20 kHz, THD 0.09 %)
1)
FRONT :
95 W + 95 W
1)
CENTER : 95 W
1)
REAR :
95 W + 95 W
(8 ohms 1 kHz, THD 10 %)
1)
FRONT :
135 W + 135 W
1)
CENTER : 135 W
1)
REAR :
135 W + 135 W
1) Depending on the sound field settings and
the source, there may be no sound output.
2) Measured under the following conditions:
Area code Power requirements
AU, E 240 V AC, 50 Hz
CN, SP 230 V AC, 50 Hz
3) Measured under the following conditions:
Area code Power requirements
CN 220 V AC, 50 Hz
Frequency response
PHONO: RIAA
equalization curve
0.5 dB
CD, TAPE, MD/DAT,
MD/TAPE, DVD/
LD, TV/SAT,
VIDEO 1, 2, and
VIDEO 3:
10 Hz – 50 kHz
+0.5/–2 dB (with
sound field,
equalizer, and bass
boost bypassed)
Inputs (Analog)
PHONO:
Sensitivity: 2.5 mV
Impedance: 50
kilohms
4)
S/N : 86 dB
5)
(A, 2.5 mV )
5.1CH INPUT, CD,
TAPE, MD/DAT,
MD/TAPE, DVD/
LD, TV/SAT, VIDEO
1, 2, and VIDEO 3:
Sensitivity: 150 mV
Impedance:
50 kilohms
4)
S/N : 96 dB
5)
(A, 150 mV )
4) INPUT SHORT
5) Weighted network, input level
Inputs (Digital)
DVD/LD IN(Coaxial):
Sensitivity: –
Impedance: 75 ohms
S/N: 100 dB
(A, 20 kHz LPF)
DVD/LD IN, TV/SAT
IN, MD/DAT IN
(Optical):
Sensitivity: –
Impedance: –
S/N: 100 dB
(A, 20 kHz LPF)
FM STEREO/FM-AM RECEIVER
US Model
Canadian Model
STR-DE845/DE945
E Model
Australian Model
Chinese Model
PX Model
STR-DE845
TAPE, MD/DAT, MD/
Outputs
TAPE; VIDEO 1, 2
(AUDIO OUT):
Voltage: 150 mV,
Impedance:
1 kilohms
SUB WOOFER:
Voltage: 2 V
Impedance:
1 kilohms
PHONES:
Accepts low- and
high-impedance
headphones
BASS BOOST +6 dB at 70 Hz
Sampling Frequency
48 kHz
EQ BASS:
100 Hz~1.0 kHz
(21 steps)
MID:
500 Hz~5.0 kHz
(21 steps)
TREBLE:
1.0 kHz~10 kHz
(21 steps)
Gain levels:
10 dB, 1 dB step
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