Sony STR-DE225 Service Manual

STR-DE225/DE325
AEP Model
Canadian Model
STR-DE225/DE325
US Model
E Model
Australian Model
Chinese Model
STR-DE325
UK Model
STR-DE225
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY”, “PRO LOGIC” and the double-D symbol are
trademarks of Dolby Laboratories Licensing Corporation.
MICROFILM
SPECIFICATIONS
Photo : STR-DE225
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
Input
Sensitivity Impedance S/N
(Weighting
network,
input level)
PHONO 50 74 dB
(STR-DE325) 2.5mV kilohms 72 dB**
(MM) (A, 2.5 mV)
CD,
5.1/DVD 200 mV
INPUT*
50 82 dB
TAPE/MD,
kilohms 82 dB**
TV/LD,
VIDEO
**’78IHF
Outputs 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
Muting Full mute
BASS BOOST +10dB at 70 Hz
TONE ±8dB at 100 Hz and 10 kHz
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
dB
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
–2
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TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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Sony STR-DE225 Specifications

General

Brand	Sony
Model	STR-DE225
Category	Stereo Receiver
Language	English

Summary

Sony STR-DE225/DE325 Service Manual

Specifications and Model Information

Detailed technical specifications and regional model designations for the receiver.

Unit Controls and Connectivity

Front Panel Controls and Rear Panel Terminals

Identification of front panel controls and rear panel input/output terminals.

Service Test Mode Procedures

Diagnostic and Configuration Test Modes

Guides for initialization, display tests, tuning, gain, and software version modes.

Circuit Diagrams and Layouts

Circuit Board Locations and System Diagrams

Diagrams showing circuit board placement and the system block diagram.

Detailed Schematics and IC Information

Schematics for display/power, printed wiring boards, and IC function details.

Exploded Views and Parts Identification

Mechanical Component Views

Exploded views of the front panel and chassis assemblies with parts identification.

Electrical Parts List

Detailed Electrical Component Listings

Comprehensive list of electrical components including capacitors, resistors, ICs, and more.

Accessories and Miscellaneous Parts

Listing of accessories, packing materials, manuals, and other miscellaneous items.