SONY STRDE875 - Service Manual Immediate Download

STR-DE875/DE975

US Model

Canadian Model

STR-DE875/DE975

AEP Model

UK Model

E Model

Chinese Model

Australian Model

STR-DE875

SERVICE MANUAL

FM STEREO FM-AM RECEIVER

9-873-911-14

2006B16-1

-- Continued on next page --

SPECIFICATIONS

Ver 1.3 2006. 02

Dolby Laboratories Licensing Corporation.

"DOLBY" the double-D symbol ; "AC-3" and "PRO LOGIC"

are trademarks of Dolby Laboratories Licensing Corporation.

Photo : BLACK

Sony Corporation

Home Audio Division

Published by Sony Techno Create Corporation

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-DE975) and 100 watts

(STR-DE875) 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

Rated Power Output at Stereo mode

(8 ohms 20 Hz - 20 kHz,

THD 0.09%)

STR-DE975:

110 W + 110W

STR-DE875:

100 W + 100W

Reference Power Output

(8 ohms at 1 kHz, THD

0.7%)

STR-DE975:

Front

1): 110 W/ch

Center

1): 110 W

Surround

1): 110 W/ch

STR-DE875:

Front

1): 100 W/ch

Center

1): 100 W

Surround

1): 100 W/ch

1) Depending on the sound field settings and

sources, there may be no sound output.

Frequency response

PHONO: RIAA

equalization curve

±0.5 dB

Inputs (Analog)

PHONO:

Sensitivity: 4.0 mV

Impedance:

50 kilohms

S/N

a): 86 dB

(A, 4.0 mV

b))

MULTI CH IN,

CD/SACD, DVD/LD,

MD/DAT*, MD/TAPE**,

TV/SAT, VIDEO 1,

VIDEO 2 VIDEO 3*:

Sensitivity: 250 mV

Impedance: 50 kilohms

S/Na): 96 dB(A, 250 mVb))

a) Input short.

b) Weighted network, input level

US, Canadian MODELS

AEP, UK MODELS :

Rated Power Output at Stereo mode

(8 ohms 1 kHz, THD

0.7%)

100 W + 100 W

Reference Power Output

(8 ohms 1 kHz, THD

0.7%)

Front : 100 W/ch

Center : 100 W

Surround : 100 W/ch

Chinese MODEL :

Rated Power output at Stereo mode

(8 ohms 1 kHz, THD

0.7%)

90 W + 90 W

(at 220 V AC, 50 Hz)

100 W + 100 W

(at 230 V AC, 50 Hz)

Reference Power output

(8 ohms 1 kHz, THD

10% at 230 V AC, 50

Hz)

Front : 110 W/ch

Center : 110 W

Surround : 110 W/ch

Rated Power Output at Stereo Mode

(8 ohms 1 kHz, THD

100 W + 100 W

Reference Power Output

(8 ohms 1 kHz, THD

FRONT : 110 W/ch

CENTER : 110 W

SURROUND : 110 W/ch

0.7 %)

10 %)

Others :

AEP, UK MODELS :

Others :

Frequency response

PHONO: RIAA

equalization curve

±0.5 dB

MULTI CH IN,

CD/SACD, MD/TAPE,

DVD/LD, TV/SAT,

VIDEO 1, VIDEO 2 :

10 Hz - 100 kHz +0.5/3 dB

(with sound field,

and equalizer by passed)

MULTI CH IN,

CD/SACD, MD/DAT*,

MD/TAPE**,

DVD/LD, TV/SAT,

VIDEO 1, VIDEO 2

VIDEO 3*:

10 Hz - 50 kHz +0.5/2 dB

(with sound field

and equalizer by passed)

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STR-DE875/DE975

Harmonic distortion

0.5 % (50 mV/m,

400 Hz)

Selectivity

At 9 kHz: 35 dB

At 10 kHz: 40 dB

c) You can change the AM tuning interval to 9

kHz. After tuning in any AM station, turn

off the receiver. Hold down the PRESET

TUNING + button and press the ?/1

button. All preset stations will be erased

when you change the tuning interval. To

reset the scale to 10 kHz, repeat the

procedure.

Video section

Inputs

Video: 1 Vp-p 75 ohms

S-video:

Y: 1 Vp-p 75 ohms

C: 0.286 Vp-p 75 ohms

Outputs

Video: 1 Vp-p 75 ohms

S-video:

Y: 1 Vp-p 75 ohms

C: 0.286 Vp-p 75 ohms

General

System

Tuner section:

PLL quartz-locked

digital synthesizer

system

Preamplifier section:

Low-noise NF type

equalizer

Power amplifier

section:

Pure-complementary

SEPP

Power requirements

120 V AC, 60 Hz

Power consumption

US MODEL :

STR-DE975: 270 W

In standby condition:

0.9 W

STR-DE875: 260 W

In standby condition:

0.9 W

Canadian MODEL :

Others :

STR-DE975: 350 VA

In standby condition:

0.9 W

STR-DE875: 340 VA

In standby condition:

0.9 W

AC outlets

2 switched, total

120 W/1A Max

Dimensions 430

× 157.5 × 369 mm

(17

× 6 1/8 × 14 4/8 in.)

including projecting

parts and controls

Mass (Approx.)

9.5 kg (20 lbs. 16 oz.)

Supplied accessories

Design and specifications are subject

to change without notice.

FM tuner section

Tuning range

87.5 - 108.0 MH

Antenna terminals

75 ohms, unbalanced

Intermediate frequency

10.7 MHz

Sensitivity

Mono: 18.3 dBf,

2.2

µV/75 ohms

Stereo: 38.3 dBf

22.5

µV/75 ohms

Usable sensitivity

11.2 dBf, 1

µV/75 ohms

S/N

Mono: 76 dB

Stereo: 70 dB

Harmonic distortion at 1 kHz

Mono: 0.3%

Stereo: 0.5%

Separation

45 dB at 1 kHz

Frequency response

30 Hz - 15 kHz +0.5/2

Selectivity

60 dB at 400 kHz

AM tuner section

Tuning range

With 10-kHz tuning scale:

530 - 1710 kHz c)

With 9-kHz tuning scale:

531 - 1710 kHz c)

Antenna

Loop antenna

Intermediate frequency

450 kHz

Usable sensitivity

50 dB/m (at 1,000 kHz

or 999 kHz)

50 dB/m (at 999 kHz)

S/N

54 dB (at 50 mV/m)

· FM wire antenna (1)

· AM loop antenna (1)

· R6 (size-AA) batteries (2)

· US, Canadian model only

· Audio/video/control S connecting cord (1)

· Control S connecting cord (1)

· STR-DE975 only

· Remote commander RM-PP505L (remote) (1)

· STR-DE875 : US, Canadian, E, Malaysia,

· Remote commander RM-PP505 (remote) (1)

BASS:

99 Hz~1.0 kHz

(21 steps)

MID:

198 Hz~10 kHz

(37 steps)

TREBLE:

1.0 kHz~10 kHz

(23 steps)

Gain levels:

±10 dB, 1dB step

Sampling Frequency

48 kHz (TV/SAT,

MD/DAT*,

MD/TAPE**

OPTICAL IN)

96 kHz (DVD/LD

OPTICAL IN,

COAXIAL IN)

* STR-DE975 only

** STR-DE875 only

Outputs

MD/DAT*,

MD/TAPE** (OUT);

VIDEO 1, VIDEO 2:

(AUDIO OUT):

Voltage: 250 mV,

Impedance: 10

kilohms

SUB WOOFER:

Voltage: 2 V

Impedance: 1

kilohms

PHONES:

Accepts low- and

high-impedance

headphones

Inputs (Digital)

DVD/LD (coaxial):

Sensitivity:

Impedance: 75 ohms

S/N: 100 dB

(A, 20 kHz LPF)

DVD/LD, TV/SAT,

MD/DAT*,

MD/TAPE**

(Optical):

Sensitivity:

Impedance:

S/N: 100 dB

(A, 20 kHz LPF)

Singapore, Chinese, Australian model only

· STR-DE875 : AEP, UK model only

· Commander, standard RM-U305A (remote)

d) You can change the AM tuning interval to

10 kHz. After tuning in any AM station,

turn off the receiver. Hold down the

TUNING + button and press the 1/u

button. All preset stations will be erased

when you change the tuning interval. To

reset the scale to 9 kHz, repeat the procedure.

AEP, UK MODELS :

531 - 1602 kHz

E MODEL :

530 - 1610 kHz (10 kHz

step)

531 - 1602 kHz (9 kHz

step)

Others :

531 - 1602 kHz (9 kHz

step)

US, Canadian MODELS :

AEP, UK MODELS :

Others :

AEP, UK MODELS :

35 dB

Others :

US, Canadian MODELS :

AEP, UK MODELS :

E MODEL :

230 V AC, 50/60 Hz

120/220/240 V AC, 50/60 Hz

Australian MODEL :

240 V AC, 50 Hz

Others :

220-230 V AC, 50/60 Hz

220 W

In standby condition:

0.9 W

US, Canadian MODELS :

AEP, UK MODELS :

1 switched, max 100 W

E, Chinese MODELS :

Others :

2 switched, total 100 W max

1 switched, total 100 W max

STR-DE875/DE975

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH

MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS

LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE

COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS

APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS

PUBLISHED BY SONY.

After correcting the original service problem, perform the

following safety checks before releasing the set to the customer:

Check the antenna terminals, metal trim, "metallized" knobs, screws,

and all other exposed metal parts for AC leakage. Check leakage as

described below.

LEAKAGE

The AC leakage from any exposed metal part to earth ground

and from all exposed metal parts to any exposed metal part having

a return to chassis, must not exceed 0.5 mA (500 microamperes).

Leakage current can be measured by any one of three methods.

A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers' instructions to use these

instruments.

A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The "limit" indication

is 0.75 V, so analog meters must have an accurate low-voltage

scale. The Simpson 250 and Sanwa SH-63Trd are examples of

a passive VOM that is suitable. Nearly all battery operated

digital multimeters that have a 2V AC range are suitable. (See

Fig. A)

SAFETY CHECK-OUT

To Exposed Metal

Parts on Set

0.15

µF

1.5 k

Voltmeter

(0.75 V)

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

Parts No.

MODEL IDENTIFICATION

-- BACK PANEL --

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES

DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT

CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE

REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY

DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU

DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

PARTS No.

4-232-578-0s

4-232-578-1s

4-233-045-0s

4-233-045-1s

4-233-045-2s

4-233-045-3s

4-233-045-4s

4-233-045-5s

4-233-045-6s

4-233-045-7s

MODEL

DE975:US model

DE975:Canadian model

DE875:US model

DE875:Canadian model

DE875:Australian model

DE875:Malaysia,Singapore model

DE875:Chinese model

DE875:E model

DE875:AEP model

DE875:UK model

STR-DE875/DE975

TABLE OF CONTENTS

1. GENERAL ··········································································· 5

2. TEST MODE ······································································ 7

3. DIAGRAMS

3-1.

Circuit Boards Location ..................................................... 8

3-2.

Block Diagrams ................................................................ 10

· Main Section .................................................................. 10

· Power Section ................................................................ 11

3-3.

Printed Wiring Board Digital Section ........................ 12

3-4.

Schematic Diagram Digital Section (1/4) .................. 13

3-5.

Schematic Diagram Digital Section (2/4) .................. 14

3-6.

Schematic Diagram Digital Section (3/4) .................. 15

3-7.

Schematic Diagram Digital Section (4/4) .................. 16

3-8.

Printed Wiring Board Main Section ........................... 17

3-9.

Schematic Diagram Main Section (1/3) ..................... 18

3-10. Schematic Diagram Main Section (2/3) ..................... 19

3-11. Schematic Diagram Main Section (3/3) ..................... 20

3-12. Printed Wiring Board Display Section ....................... 21

3-13. Schematic Diagram Display Section .......................... 22

3-14. Printed Wiring Board Video Section .......................... 23

3-15. Schematic Diagram Video Section ............................. 24

3-16. Printed Wiring Board Speaker Section ....................... 25

3-17. Schematic Diagram Speaker Section ......................... 26

3-18. Printed Wiring Board Power Section ......................... 27

3-19. Schematic Diagram Power Section ............................ 28

3-20. IC Block Diagrams ........................................................... 29

3-21. IC Pin Function Description ............................................. 33

4. EXPLODED VIEWS

4-1.

Front Panel Section .......................................................... 36

4-2.

Chassis Section ................................................................. 37

5. ELECTRICAL PARTS LIST ······································· 39