Sony STR-DE235 Manuel utilisateur

MICROFILM

SERVICE MANUAL

FM STEREO/FM-AM RECEIVER

AEP Model

UK Model

STR-DE235

SPECIFICATIONS

– Continued on next page –

– 2 –

TABLE OF CONTENTS

1. GENERAL ................................................................... 3

2. DISASSEMBLY ......................................................... 4

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

4. DIAGRAMS

4-1. Block Diagram – MAIN Section (1/2) – ....................... 7

4-2. Block Diagram – MAIN Section (2/2) – ....................... 9

4-3. Block Diagram

– DISPLAY/POWER SUPPLY Section – ...................... 11

4-4. Note for Printed Wiring Boards

and Schematic Diagrams ................................................ 13

4-5. Printed Wiring Board – MAIN Board – ........................ 15

4-6. Printed Wiring Boards

– SP SW Board/SECONDARY Board/

STANDBY Board/PRIMARY Board – .......................... 17

4-7. Schematic Diagram – Main Board (1/4) – .................... 19

4-8. Schematic Diagram

– Main Board (2/4)/SP SW Board – ............................... 21

4-9. Schematic Diagram – Main Board (3/4) – .................... 23

4-10. Schematic Diagram – Main Board (4/4)/

SECONDARY Board/STANDBY Board/

PRIMARY Board – ......................................................... 25

4-11. Printed Wiring Boards – PANEL Section – .................. 27

4-12. Schematic Diagram – PANEL Section – ....................... 29

4-13. Printed Wiring Boards

– VOLUME Board/TONE Board – ................................ 31

4-14. Schematic Diagram

– VOLUME Board/TONE Board – ................................ 32

4-15. IC Pin Function Description ........................................... 36

5. EXPLODED VIEWS ................................................ 38

6. ELECTRICAL PARTS LIST ............................... 41

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 PUB-

LISHED BY SONY.

– 3 –

SECTION 1

GENERAL

1I/ubutton

2TUNING +, – buttons

3DISPLAY button

4PRESET/PTY SELECT +, – buttons

5RDS PTYbutton

6RDS EON button

7FM/AM button

8VIDEO button

9TV/LD button

0MD/TAPE button

!¡ SOUND FIELD + MODE, ON/OFF,

– MODE buttons

!™ SET UP button and indicator

Location of controls

• Front view

!¢ CINEMA indicator

!∞ MUSIC indicator

!§ BASS BOOST button and indicator

!¶ SPEAKERS A, B ON/OFF buttons

!• PHONES jack

!ª SHIFT button

@º Numeric buttons

@¡ DIRECT button

@™ MEMORY button

@£ FM MODE button

@¢ CD button

@∞ TUNER button

@§ EFFECT/DELAY button and indicator

@¶ CENTER button and indicator

@• – button

@ª + button

#º REAR button and indicator

#¡ ENTER button

#™ NAME button and indicator

#£ VOLUME control

#¢ MUTING button and indicator

#∞ TREBLE control

#§ BASS control

#¶ BALANCE control

345

1267 !¢89 0 !¡ !™ !∞ !§

!¶

!•

!ª @º @¡ @™

#∞

#§

#¶

@£ @¢ @∞ @§@¶@• @ª#º #™ #£ #¢#¡

• Rear view

1 2345 6 7

90!¡

– 4 –

CASE

FRONT PANEL SECTION

Note: Follow the disassembly procedure in the numerical order given.

SECTION 2

DISASSEMBLY

two screws

(case3 TP2)

screw (case3 TP2)

two screws

(case3 TP2

)

case

three connectors

(CNP702 – 704)

claw

front panel section

screw

(BVTP3

four screws

(BVTP3

claw

three flat wires

(CNS204, 403, 701

)

SECTION 3

TEST MODE

Initialization Mode

All preset contents are cleared when this mode is activated. When

returning the unit to the customer after completing repairs, per-

form this operation to clear the unit.

Procedure:

1. While pressing two buttons of [TUNER] and [MD/TAPE] si-

multaneously, press the 1/ubutton to turn the power ON.

2. The message “INITIAL” appears and initialization is per-

formed.

Fluorescent IndicatorTubeTest 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:

1. While pressing two buttons of [TV/LD] and [DIRECT] simul-

taneously, press the 1/ubutton to turn the power ON.

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

LED turns on one after another.

3. The message “FINISH” appears when this test is complete.

AUTO-BETICAL Check Mode

To auto-scanning and memories of RDS station.

Procedure:

1. While pressing the [MEMORY] button, press the

1/ubutton to turn the power ON.

2. The message “AUTO BET” appears and each function is se-

lected one after another.

Software Version Display Mode

The software version is displayed.

Procedure:

1. While pressing two the buttons of [MD/TAPE] and [DIRECT]

simultaneously, press the 1/ubutton to turn the power ON.

2. The software version is displayed.

SOUND FIELD Setting Clear Mode

All SOUND FIELD setting are cleared.

Procedure:

1. While pressing the [SOUNDFIELDON/OFF] button, press

the 1/ubutton to turn the power ON.

2. The message “SURR CLR” appears and all SOUND FIELD

setting are cleared.

– 5 – – 6 –

REAR PAENL SECTION

MAIN BOARD

connectors

(CNP901)

rear panel section

two screws

(BVTP3

seven screws

(BVTP3

four screws

(BVTP3

flat wire (CNS401)

connector

(CNS802)

connector

(CNP702)

connector

(CNP801)

two connectors

(CNP703, 704)

PC board holder

three screws

(BVTP3

three screws

(BVTP3

MAIN board

three flat wires

(CNS204, 403, 701

)

STR-DE235

– 7 – – 8 –

SECTION 4

DIAGRAMS

4-1. BLOCK DIAGRAM – MAIN Section (1/2) –

FUNCTION

SWITCH

IC401

DOLBY SURROUND

PRO-LOGIC DECODER

IC300

DOLBY SURROUND

PASSIVE DECODER

IC301

VOLUME

MOTOR DRIVE

IC202

SYSTEM CONTROLLER

IC201 (1/2)

(Page 9)

•SIGNAL PATH

: TUNER (FM)

FM/AM TUNER PACK

COM

L OUT

FM-ANT

GND

AM-ANT

GND

R OUT

VIDEO

TV/SAT

R-CH R-CH

S.CLK

48 7

13 14

S.DATA 14

S.LAT 13

CLK 47

DATA 46

ENABLE

OSC1

CLK

2DATA

ENABLE

X201

4.19MHz

CENTER

RCH

LCH

REAR

–1

–2

L-OUT

R-OUT

S-OUT

C-OUT

L-IN

R-IN

VIDEO

REC

TAPE

REC

REC COM

FUNC.MUTE

UP 8

DOWN

VOL UP

VOL DOWN

SP-RLY 22

SURR-RLY

SP-RLY

SURR-RLY

PROTECT

L-IN

R-IN

S-IN

LC-INB

39 LC-INE

40 CR-OT

41 CR-IN

LS-OUT

LEVEL

SHIFT SHIFT

& LATCH

CPU

INTERFACE

J402 (1/2)

VIDEO

AUDIO IN

RV421

BASS RV422

TREBLE RV423

BALANCE

R-CH

TV/LD

AUDIO IN

R-CH

J401 (1/2)

MD/TAPE IN L

LINE AMP

IC302 (1/2)

LINE AMP

IC404 (1/2)

LINE AMP

IC404 (2/2)

LINE AMP

IC302 (2/2)

MOTOR

DRIVE

MUTING

Q363

L-OUT

R-OUT

MUTING

Q361

MUTING

Q362

OSC

MUTING

Q365

ANTENNA

FM 75Ω

COAXIAL

R-CH

CD IN L

RR-CH

R-CH

J402 (2/2)

J401 (2/2)

VIDEO

AUDIO

OUT

MD/TAPE

REC OUT

R-CH

29 27

R-CH

PHONO

R-CH

TUNER

R-CH

MD/TAPE

R-CH

S.DATA

S.CLK

S.LAT

DATA

CLK

EN1

DATA

CLK

EN1

PLL DATA

TUNED

STEREO

SIGNAL

TUNER-MUTE

AUTO-STOP

13 S.CE (LV1018)

12 S.CE (LC7822)

9S.CLK

10 S.DATA

11 PLL.DATA

STEREO-IN

SIGNAL

TUNER-MUTE

31 RDS DATA IN

46 RDS CLK IN

TUNED

STEREO

SIGNAL

TUNER-MUTE

DATA

CLK

EN2

DATA

CLK

EN1

EN2

TUNED

STEREO

SIGNAL

DET OUT

T.MUTE

RDS DECODER

IC1

57 kHz

BAND-PASS

FILTER

CLOCKED

COMPARATOR CONTANS LOOP

VARIABLE &

FIXED DIVIDER

CLOCK

REGENERATION

& SYNC

OSCILLATOR

& CLOCK

DIFFERENTIAL

DECODER

BIPHASE SYMBOL

DECODER

4.332MHz

MUX CIN RDDA

OSCI

OSCO

RDCL

OUT

–1

–2

–1

–2

–4

–5

–6

RV404

MASTER VOLUME

–3

(Page 9)

PROTECT

STR-DE235

– 9 – – 10 –

4-2. BLOCK DIAGRAM – MAIN Section (2/2) –

POWER AMP

IC701 (1/2)

(Page 8)

•SIGNAL PATH

: TUNER (FM)

LCH

SP-RLY,

SURR-RLY,

PROTECT

SP-RLY

SURR-RLY

PROTECT

PRE

DRIVE DRIVER

CENTER

REAR

TM601

TM701

BASS BOOST

FILTER AMP

Q452

BASS BOOST

SWITCH

Q401

FINAL

DRIVER

Q703, 704 OVER LOAD

DETECT

Q720

BIAS

Q701, 702

J253

MIX

AUDIO OUT

(Page 8)

S701–3–1

PHONES

J741

+VOUT1

–VOUT1

IN1

NF1

–1

POWER AMP

IC702 (1/2)

(Page 8)

(Page 11)

RCH

BASS

BOOST

PRE

DRIVE DRIVER

BASS BOOST

FILTER AMP

Q402

BASS BOOST

SWITCH

Q451

FINAL

DRIVER

Q753, 754 OVER LOAD

DETECT

Q770

BIAS

Q751, 752

+VOUT1

–VOUT1

IN1

NF1

POWER AMP

IC701 (2/2)

(Page 8)

REAR PRE

DRIVE DRIVER FINAL

DRIVER

Q653, 654 OVER LOAD

DETECT

Q670

BIAS

Q651, 652

+VOUT2

–VOUT2

IN2

NF2

POWER AMP

IC702 (2/2)

PRE

DRIVE DRIVER FINAL

DRIVER

Q603, 604 OVER LOAD

DETECT

Q620

BIAS

Q601, 602

+VOUT2

–VOUT2

IN2

NF2

(Page 8)

CENTER

PROTECT

SWITCH

Q721 – 723

D721

SPEAKER PROTECT

RELAY DRIVE

Q610

RY601

–2

SPEAKER PROTECT

RELAY DRIVE

Q710

RY701

–1

D725 D728

D723 D311, 312

D203

S701–4–2

SPEAKERS A

ØON øOFF

OFF

S701–3

SPEAKERS A

ØON øOFF

S701–1–1

SPEAKERS B

ØON øOFF

S701–2

SPEAKERS A

ØON øOFF

OFF

S701–2–1

ONOFF

S701–2–2

ONOFF

OFF

S701–1–2

SPEAKERS B

ØON øOFF

OFF

S701–3–2

–

SPEAKERS FRONT

IMPEDANCE

USE 4 – 16Ω

SPEAKERS

IMPEDANCE

USE 4 – 16Ω

STR-DE235

– 11 – – 12 –

4-3. BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –

B+ SWITCH

Q233

REMOTE CONTROL

RECEIVER

IC203

FLUORESCENT

INDICATOR

TUBE

FL201

POWER ON/OFF

RELAY DRIVE

Q802

BRIDGE

RELAY DRIVE

Q809

–24V

REGULATOR

Q801

RECT

D803

RECT

D802

(Page 9)

BASS BOOST

B+ SWITCH

Q237

LED DRIVE

Q242

RECT

D820 – 823

RECT

D810 – 813

+12V

REGULATOR

IC801

+5V

REGULATOR

IC803

RECT

D814, 815

VREF

DET

LATCH

+5.6V

REGULATOR

Q951

RESET SWITCH

Q201, 202

–12V

REGULATOR

IC802

+10V

REGULATOR

IC805

+5V

REGULATOR

IC804

+5V

F1 F2

Q234 – 236

LED DRIVE

Q236 Q235 Q234

D236

D241

D421

Q239

LED3

LED SELECT

S201 – 220, 222 – 227,

S229 – 231, 234 – 244

BRIDGE-RLY

D201, 202

OUTC

VSC

RESET

V+

VSB

+12V

–12V

RELAY B+

+10V

DOLBY SURROUND PRO-LOGIC

CIRCUIT (IC300, 301) B+

+5V

DISPLAY SECTION B+

+5V

FM/AM TUNER PACK,

RDS DECODER (IC1) B+

FUNCTION SWITCH (IC401),

AUDIO LINE AMP CIRCUIT

POWER AMP

CIRCUIT

–24V

FL DRIVER (IC201) B–

+5V

SYSTEM CONTROLLER

(IC201) B+ RESET SIGNAL GENERATOR,

+5.6V REGULATOR

IC950

B+

B–

–1

–2

TO FL201

T902

POWER

TRANSFORMER

T901

POWER

TRANSFORMER

AC OUTLET

SWITCHED

100W MAX

CNJ903

AEP

RY901

A/D-1 – A/D-4

LED2

60 LED1

BASS BOOST

POWER-RLY 23

STOP 47

RESET 17

VSA

RY801

AC IN

SYSTEM CONTROLLER, FL DRIVER

IC201 (2/2)

SYS-POWER

SIRCS

S200

(POWER)

I/u

D237

REAR

D233

CENTER

D228

BASS BOOST

D236

EFFECT/

DELAY

D234

SET UP

D235

NAME

28 – 25

DIG1 – DIG10

7 – 1, 80 – 78

S1 – S15

77 – 72, 70 – 62

MUTING LED50

LED DRIVE

Q241

D240

MUTING

C.STUDIO LED

LED DRIVE

Q231

D231

CINEMA

HALL LED

LED DRIVE

Q232

D232

MUSIC

– 13 – – 14 –

4-4. NOTES FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

•X: parts extracted from the component side.

•b: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

•Indication of transistor.

These are omitted.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolytics

and tantalums.

• All resistors are in Ωand 1/4W or less unless otherwise

specified.

•¢: internal component.

•2: nonflammable resistor.

•C: panel designation.

Note: The components identified by mark !or dotted line

with mark !are critical for safety.

Replace only with part number specified.

•U: B+ Line.

•V: B– Line.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.

no mark : TUNER (FM)

• VoltagesaretakenwithaVOM(Input impedance 10 MΩ).

Voltage variations may be noted due to normal produc-

tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-

tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F: TUNER (FM)

These are omitted.

• Circuit Boards Location

PRIMARY board

SECONDARY board

STANDBY board

MAIN board

DISPLAY board

POWER SWITCH

board

SP SW board

KEY board

TONE board

VOLUME board

STR-DE235

– 15 – – 16 –

4-5. PRINTED WIRING BOARD – MAIN Board– • See page 14 for Circuit Boards Location.

(Page 17)

(Page

17)

(Page 18)

(Page 17)

(Page 27)(Page 31)

D300 G-3

D311 H-7

D312 H-6

D421 H-6

D610 B-6

D710 H-11

D721 G-5

D722 G-5

D723 H-5

D724 G-5

D725 G-5

D726 G-5

D727 H-5

D728 H-5

D801 H-7

D802 D-12

D803 E-12

D804 H-7

D810 B-13

D811 B-13

D812 B-12

D813 B-12

D814 B-12

D815 B-12

D818 C-13

D820 C-12

D821 C-12

D822 C-12

D823 C-12

IC1 B-1

IC300 E-3

IC301 G-4

IC302 F-1

IC401 B-3

IC701 G-7

IC702 C-7

IC801 D-5

IC802 D-5

IC803 A-2

IC804 E-5

IC805 D-3

IC950 A-10

Q361 H-2

Q362 H-2

Q363 H-2

Q365 H-2

Q401 H-6

Q402 C-6

Q451 E-7

Q452 H-5

Q601 C-7

Q602 B-8

Q603 C-8

Q604 B-8

Q610 B-6

Q620 C-7

Q651 F-8

Q652 F-8

Q653 F-8

Q654 E-8

Q670 F-8

Q701 H-7

Q702 H-8

Q703 H-8

Q704 G-8

Q710 H-11

Q720 G-7

Q721 G-5

Q722 G-6

Q723 G-5

Q751 D-7

Q752 D-8

Q753 E-8

Q754 D-8

Q770 D-7

Q801 H-8

Q802 B-13

Q809 C-13

Q951 A-10

Ref. No. LocationRef. No. Location

• Semiconductor Location

(PAGE

31)

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