Sony STR-DE485 - Service Manual

1
SERVICE MANUAL
US Model
Canadian Model
E Model
Australian Model
Chinese Model
STR-DE485
AEP Model
UK Model
STR-DE485E
STR-DE485/DE485E
FM STEREO/FM-AM RECEIVER
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
With 8 ohm loads, both channels driven, from
40 – 20,000 Hz; rated 80 watts per channel
minimum RMS power, with no more than
0.09 % total harmonic distortion from 250
milliwatts to rated output (STR-DE485 area
code US only).
Amplifier section
POWER OUTPUT
Models of area code US, CND
Rated Power Output at Stereo Mode
(8 ohms 40 Hz – 20 kHz, THD 0.09 %)
STR-DE485: 80 W + 80 W
Reference Power Output
(8 ohms 1 kHz, THD 0.7 %)
STR-DE485: FRONT
1)
: 80 W/ch
CENTER
1)
: 80 W
SURR
1)
: 80 W/ch
Models of area code AEP, UK
Rated Power Output at Stereo Mode
(8 ohms 1 kHz, THD 0.7 %)
STR-DE485E 80 W + 80 W
2)
Reference Power Output
(8 ohms 1 kHz, THD 0.7 %)
STR-DE485E FRONT
1)
: 80 W/ch
CENTER
1)
: 80 W
SURR
1)
: 80 W/ch
SPECIFICATIONS
Models of other area code
Rated Power Output at Stereo Mode
(8 ohms 1 kHz, THD 0.7 %)
80 W + 80 W
2)
Reference Power Output
2)
(8 ohms 1 kHz, THD 10 %)
FRONT
1)
: 100 W/ch
CENTER
1)
: 100 W
SURR
1)
: 100 W/ch
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
E, AUS 240 V AC, 50 Hz
SP, AEP, UK 230 V AC, 50 Hz
TW 110 V AC, 60 Hz
MX 120 V AC, 60 Hz
Frequency response
MULTI CH IN 10 Hz – 50 kHz
(STR-DE485 only), CD, +0.5/–2 dB (with sound
MD/TAPE, DVD/LD, field, and tone bypassed)
VIDEO 1, 2
Inputs (Analog)
MULTI CH IN Sensitivity: 250 mV
(STR-DE485 only), CD, Impedance: 50 kilohms
MD/TAPE, DVD/LD, S/N
3)
: 96 dB
VIDEO 1, 2 (A, 250 mV
4)
)
3) INPUT SHORT (with sound field and tone
bypassed).
4) Weighted network, input level.
Ver 1.0 2002. 02
9-873-587-01
2002B0400-1
© 2002.02
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
Photo: STR-DE485
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are
trademarks of Dolby Laboratories.
“DTS” and “DTS Digital Surround” are registered
trademarks of Digital Theater Systems, Inc.
– Continued on next page –

Summary

STR-DE485;DE485 E Service Manual

Safety Checks and Leakage Testing

Safety Check-out and Leakage Test

Procedures for ensuring safety after service, including AC leakage testing.

Model Identification and Component Warnings

Mapping model numbers and warning about safety-critical components.

General Information and Button Guide

Button Locations and Descriptions

Remote Control Operation

Instructions for operating the unit using the RM-U306 remote control.

Test Mode Operations

Software Version, Indicator, and Key Checks

Preset and Configuration Modes

Procedures for factory preset reset, sound field clear, and AM channel step selection.

Diagrams and Schematics

IC Pin Descriptions and Circuit Board Locations

Block Diagrams by Section

Block diagrams illustrating signal flow for Tuner/Audio, Digital, Video/Display, and Power sections.

Schematic Diagrams by Section

Detailed schematics for Main, Digital, Video, Display, and Power sections.

Printed Wiring Boards

IC Block Diagrams

Exploded Views

Electrical Parts List

Capacitors, Semiconductors, and Coils

Digital Board Components

Main Board Components

Power SW, Standby, and Video Board Components

Sony STR-DE485 Specifications