SONY STRDE635 - Service Manual Immediate Download

STR-DE635

US Model

Canadian Model

AEP Model

SERVICE MANUAL

FM STEREO FM-AM RECEIVER

-- Continued on next page --

SPECIFICATIONS

Manufactured under license from Dolby Laboratories

Licensing Corporation.

"DOLBY" and the double-D symbol

a are trademarks

of Dolby Laboratories Licensing Corporation.

Ver 1.1 2002. 02

Sony Corporation

Home Audio Company

Published by Sony Engineering Corporation

9-928-897-12

2002B1600-1

AUDIO POWER SPECIFICATIONS:

POWER OUTPUT AND TOTAL

HARMONIC DISTORTION:

With 8

loads, both channels driven, from 20 20,000 Hz; rated 80 W

per channel minimum RMS power, with no more than 0.09% toral

harmonic distortion from 250 mW to rated output (USA model only).

Amplifier section

Stereo mode

USA, Canadian models:

20Hz 20kHz, THD 0.09%)

80W + 80W

AEP model:

DIN, 1kHz)

70W + 70W

Surround mode

USA, Canadian models:

at 1kHz, THD 0.8%)

Front: 80W + 80W

Centera): 80W

Reara): 80W + 80W

AEP model:

DIN, 1kHz)

Front: 70W + 70W

Centera): 70W

Reara): 70W + 70W

a) Depending on the sound field settings and the source, there may be no

sound output.

Dynamic power output

145W + 145W, 8

210W + 210W, 4

Frequency response

PHONO: RIAA

equalization curve ±0.5 dB

USA, Canadian models:

CD, MD/TAPE, DVD/LD, TV/SAT,

VIDEO1,2:

AEP model:

CD, MD/TAPE, DVD, TV/LD, VIDEO1,2:

10Hz 50kHz + 0.5/2dB (with sound field,

equalizer, and bass boost bypassed)

Inputs (Analog)

PHONO:

Sensitivity: 2.5mV

Impedance: 50k

S/Nb): 86dB (A, 2.5mVc))

USA, Canadian models:

5.1CH INPUT, CD,DVD/LD,MD/TAPE,TV/

SAT,VIDEO1,2:

AEP model

5.1CH INPUT, CD,DVD,MD/TAPE,TV/

LD,VIDEO1,2:

Sensitivity: 150mV

Impedance: 50k

S/Nb): 96dB (A, 150mVc))

b) Input short

c) Weighted network, input level

-- 2 --

Inputs (Digital)

DVD/LD (coaxial):

Sensitivity:

Impedance: 75

S/N: 100dB (A, 20kHz LPF)

DVD/LD (Optical):

Sensitivity:

Impedance:

S/N: 100dB (A, 20kHz LPF)

Outputs

MD/TAPE, (REC OUT);

VIDEO1,2 (AUDIO OUT):

Voltage: 150mV,

Impedance: 10k

SUB WOOFER:

Voltage:2V

Impedance: 1k

PHONES:

Accepts low-and high-impedance headphones

BASS BOOST

+6dB at 70Hz

Sampling Frequency

48kHz

BASS: 100Hz 1.0kHz (21steps)

MID: 500Hz 5.0kHz (21steps)

TABLE: 1.0kHz 10kHz (21steps)

Gain levels: ±10dB, 1dB step

FM tuner section

Tuning range

87.5 108.0MHz

Antenna terminals

, unbalanced

Sensitivity

Mono: 18.3dBf, 2.2µV/75

Stereo: 38.3dBf, 22.5µV/75

Usable sensitivity

11.2dBf, 1µV/75

S/N

Mono: 76dB

Stereo: 70dB

Harmonic destortion at 1kHz

Mono: 0.3%

Stereo: 0.5%

Separetion

45dB at 1kHz

Frequency response

30Hz 15kHz + 0.5/2dB

Selectivity

60dB at 400kHz

AM tuner section

Tuning range

USA, Canadian models:

With 10-kHz tuning scale:

530 1,710kHzd)

With 9-kHz tuning scale:

531 1,710kHzd)

AEP model

531 1,602kHz

Antenna

Loop antenna

Usable sensitivity

50dB/m (at 1,000kHz or 999kHz)

S/N

54dB (at 50mV/m)

Harmonic destortion

0.5% (50mV/m, 400kHz)

Selectivity

At 9kHz: 35dB

At 10kHz: 40dB

d) You can change the AM tuning scale to 9kHz. 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 scale. To reset the scale to 10kHz, repeat the

procedure.

Video section

Inputs

1Vp-p 75

Outputs

1Vp-p 75

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 USA, Canadian models:

120V AC, 60Hz

AEP model

230V AC, 50/60Hz

Power consumption

USA: 270W

Canada: 285VA

AEP: 200W

AC outlets

USA, Canadian models:

2switched, total 100W

AEP model

1switched, max 100W

Dimensions

430

× 364 × 157.5mm

(17

× 145/

× 61/

in.)

including projecting parts and controls

Mass (Approx.)

USA, Canadian models:

9.5kg (20 lbs. 15 oz.)

AEP model

10.1kg

Supplied accessories FM wire antenna (1)

AM loop antenna (1)

Remote commander RM-PP402 (remote) (1)

R6 (size-AA) batteries (2)

FM antenna adapter (1)

Design and specifications are subject to change without notice.

-- 3 --

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK

! OR DOTTED LINE WITH

MARK

! 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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE

! 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.

TABLE OF CONTENTS

SAFETY CHECK-OUT

(US model only)

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 microampers).

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)

Earth Ground

voltmeter

(0.75V)

1.5k

0.15

µF

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

To Exposed Metal

Parts on Set

1. GENERAL ·········································································· 4

2. SERVICEING NOTE ······················································· 6

3. TEST MODE ······································································ 6

4. DIAGRAMS

4-1.

Block Diagram Main Section ··········································· 7

4-2.

Block Diagram Power Section ········································· 9

4-3.

Circuit Board Location ····················································· 11

4-4.

Schematic Diagram Digital Section(1/3) ······················· 13

4-5.

Schematic Diagram Digital Section(2/3) ······················· 15

4-6.

Schematic Diagram Digital Section(3/3) ······················· 17

4-7.

Printed Wiring Board Digital Section(1/2) ····················· 19

4-8.

Printed Wiring Board Digital Section(2/2) ····················· 21

4-9.

Printed Wiring Board Display Section ··························· 23

4-10. Schematic Diagram Display Section ······························ 25

4-11. Printed Wiring Board Surround Section ························· 27

4-12. Schematic Diagram Surround Section ··························· 29

4-13. Printed Wiring Board Rear AMP Section ······················· 31

4-14. Schematic Diagram Rear AMP Section ························· 33

4-15. Printed Wiring Board Power Section ····························· 35

4-16. Schematic Diagram Power Section ································ 37

4-17. Printed Wiring Board Video Section ······························ 39

4-18. Schematic Diagram Video Section ································· 41

4-19. Printed Wiring Board Main Section ······························· 43

4-20. Schematic Diagram Main Section(1/2) ·························· 45

4-21. Schematic Diagram Main Section(2/2) ·························· 47

4-22. IC Pin Function ································································ 49

4-23. IC Block Diagrams ··························································· 59

5. EXPLODED VIEWS

5-1.

Front Panel Section ·························································· 62

5-2.

Chassis Section ································································· 63

6. ELECTRICAL PARTS LIST ······································· 64

-- 4 --

SECTION 1

GENERAL

Identifying the Parts

Front Panel

1/u switch

Function buttons

INPUT MODE button

5.1CH INPUT button

MASTER VOLUME control

MUTING button

SPEAKERS selector

PHONES jack

DISPLAY button

DIMMER button

A.F.D button/indicator

MODE button/indicator

2CH button/indicator

!¡

MULTI CHANNEL DECODING indicator

!TM

BASS BOOST button

!£

EQUALIZER button

!¢

DIRECT button

SHIFT button

Numeric buttons (0 to 9)

AM button (US, Canadian models)

RDS EON button (US, Canadian models)

FM button (US, Canadian models)

AM/FM button (AEP model)

FM MODE button

MEMORY button

TUNNIG +/- buttons

PRESET +/- buttons

!§

LEVEL button

!¶

SUR button

!·

EQ button

!ª

Cursor buttons(</>)

@º

Jog dial

@¡

SET UP button

@TM

NAME button

@£

ENTER button

@¢

RDS PTY button (AEP model)

-- 5 --

-- 6 --

SECTION 3

TEST MODE

FLUORESCENT INDICATOR TUBE TEST MODE

* All fluorescent segments are tested. When this test is activated,

all segments turn on at the same time, then each segment turns on

one after another.

* Procedure:

While depressing the ENTER, the LEVEL and the EQ buttons

simultaneously, press the power [

1/u] button to turn on the main

power. All segments turn on at the same time, then each segment

turns on press the ENTER button..

FACTORY SET MODE

* All preset contents are reset to the default setting.

* Procedure:

While depressing the SET UP, the LEVEL and the ENTER buttons

simultaneously, press the power [

1/u] button to turn on the main

power. The message Factry Set appears and the present contents

are reset to the default values.

ALL CLEAR MODE

* All preset contents are cleared when this mode is activated. Use

this mode before returning the product to clients upon completion

of repair.

* Procedure:

While depressing the SET UP button simultaneously, press the

power [

1/u] button to turn on the main power. The machine enters

the DEMO mode.DEMO mode: Wait a while, then the

demonstration starts. If the power [

1/u] button is pressed often

the demonstration has started, the power is turned off, and the

demonstration resumes if the power [

1/u] button is pressed again.

ALL CLEAR mode; If the power [

1/u] button is pressed often

the machine enters the DEMO mode, but before the demonstration

starts, the display is turned off. Press [

1/u] again. No response is

returned. The press [

1/u] again. The preset data is cleared and

the machine enters the normal power-on state.

SOUND FIELD CLEAR MODE

* The preset sound field is cleared when this mode is activated.

Use this mode before returning the product to clients upon

completion of repair.

* Procedure:

While depressing the SOUND FIELD MODE button, press the

power [

1/u] button to turn on the main power. The message S.F

Initialize appears and initialization is performed.

AM CHANNEL STEP 9 kHz/10 kHz

SELECTION MODE (US, Canadian models)

* Either the 9 kHz step or 10 kHz step can be selected for the AM

channel step.

* Procedure:

Set the FUNCTION to AM. Turn off the main power.

While depressing the TUNING+ button or the PRESET TUNING

+ button, press the power [

1/u] button to turn on the main power.

Either the message AM 9kHz Step or AM 10kHz Step appears.

Select the desired step.

DSP TEST MODE

* It tests whether the DSP works correctly or not. When the DSP

test is activated, the test data is output from the DSP (IC1401:

CXD2712R) of the DIGITAL board and is written in the RAM

(IC1402: IDT71V016S). When the test data is read from the RAM

by the DSP, the data output must be equivalent to the original

data. If they disagree, an error is triggered. Errors can be caused

by the broken data line or defective soldering.

* Procedure

While pressing the SETUP, LEVEL and SUR buttons, press the

POWER button to enter the DSP test mode. The message DSP

TEST MODE appears. When an error occurs, the message DSP2

ERROR is displayed. When there is no error, the message DSP2

NO ERROR appears and the 1 kHz signal is output to all channels.

Then, the mode can be switched the (SIGN WAVE) (THROUGH)

and (INPULSE) mode.

AUTOBETICAL MODE (AEP Model only)

* This mode is installed in the Europe models only. When this mode

is used, the receiver scans the broadcasts that can be received by

tuner, and sets up the broadcasts. Be sure to start scanning after

connecting the antenna.

Procedure:

Check that the antenna is connected. Press the POWER button

while pressing the MEMORY button to turn on the power. The

message "Autobetical select" appears and scanning starts by tuner.

VERSION MODE

* When this mode is used, the microprocessor version number is

displayed.

* Procedure:

Press the POWER button while pressing the ENTER, LEVEL,

and SUR buttons to turn on the power. The microprocessor version

number appears as follows.

SECTION 2

SERVICING NOTE

1. When the front panel is removed, the VR board is removed at the

same time. Consequently the LEDs cannot be turned on and the

sound volume cannot be increased or decreased from the remote

control.

2. When servicing the DIGITAL board, be sure to connect the earth

land of the DIGITAL board with the chassis frame so that the

earth potential of the DIGITAL board must not be floated from

the chassis frame.

Rear Panel

!¡

!TM

!£

!¢

!§

!¶

!·

!ª

ANTENNA

DIGITAL

5.1 CH INPUT

SPEAKERS (FRONT)

SPEAKERS (REAR)

SPEAKERS (CENTER)

WOOFER

INPEDANCE SELECTOR

AC power cord

!º

AC OUTLET

!¡

S-LINK

!TM

VIDEO 1

!£

VIDEO 2

!¢

DVD/LD (US, Canadian models)

DVD (AEP model)

TV/SAT (US, Canadian models)

TV/LD (AEP model)

!§

MONITOR

!¶

MD/TAPE

!·

!ª

PHONO