SONY STR DE435, STR DE535, STR SE491, STR V424, STR V525 Service Manual

STR-DE435/DE535/SE491/V424/V525

SERVICE MANUAL

Photo: STR-DE535

Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol a “AC-3” and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.

SPECIFICATIONS

US Model

STR-DE435/DE535/SE491

Canadian Model

STR-DE435/DE535

AEP Model

STR-DE435

E Model

STR-DE435/DE535

Australian Model

STR-DE435/DE535

Chinese Model

STR-V424/V525

POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 8-ohm load, both channels driven, from 20
20,000 Hz rated 100 watts per channel minimum
RMS power, with no more than 0.09%
harmonic distortion from 250 milliwatts to rated
output.
STR-SE491:
a) 40Hz
b) 0.5%

Amplifier section

Stereo mode STR-DE535/DE435:

(8Ω at 20Hz – 20kH
less than 0.09% total
harmonic distortion)
100W + 100W

STR-SE491:
(8Ω at 40Hz – 20kHz less
than 0.5% total harmonic
distortion)
100W + 100W

Surround mode and STR-DE535/435:

5.1CH/DVD mode (8Ω at 1kHz, THD 0.8%)

Front: 100W/ch
Center*: (Pro Logic Mode)
100W
Rear*: 100W/ch

STR-SE491:
(8Ω at 1kHz, THD 0.5%)
Front: 100W/ch
Center*: 100W
Rear*: 100W/ch

b)

total

Frequency response PHONO: RIAA

a)

–

Inputs

Sensitivity Impedance S/N

PHONO
(except STR- 4mV
DE435)

CD,

5.1CH/
DVD,
MD/TAPE, 250mV
TV/SAT,
VIDEO

Outputs MD/TAPE REC OUT:

equalization curve
±0.5dB
(except STR-DE435)

TV/SAT, CD, MD/
T APE, VIDEO, 5.1CH/
DVD
10Hz – 50kHz ± 1dB

50

kilohms

50

kilohms

Voltage: 250mV,
Impedance: 10kilohms
VIDEO AUDIO OUT:
Voltage: 250mV,
Impedance: 10kilohms
WOOFER:
Voltage: 2V
Impedance: 1kilohms
PHONES: Accepts low
and high impedance
headphones

86dB

96dB

Muting Full mute
BASS BOOST +8dB at 70Hz
TONE ±8dB at 100Hz and

T uner section

FM Stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 87.5 – 108.0MHz
Antenna terminals 75Ω, unbalanced
Intermediate frequency 10.7MHz
Sensitivity Mono: 18.3dBf,

Usable sensitivity 11.2dBf, 2µV (IHF)
S/N Mono: 76dB

Harmonic Mono: 0.3%
distortion at 1kHz Stereo: 0.5%
Separation 45dB at 1kHz
Frequency response 30Hz –15kHz dB
Selectivity 60dB at 400kHz

— Continued on next page —

10kHz

4.5µV
Stereo: 38.3dBf,
45µV

Stereo: 70dB

+0.5
–2

MICROFILM

FM STEREO FM-AM RECEIVER

AM tuner section

Tuning range 10kHz interval**

530 – 1,710kHz
9kHz interval

531 – 1,710kHz
Antenna Loop antenna
Intermediate frequency 450kHz
Usable sensitivity 50dB/m (at 1,000kHz)
S/N 54dB (at 50mV/m)
Harmonic distortion 0.5% (50mV/m, 400Hz)
Selectivity At 10kHz: 40dB

At 9kHz: 35dB

** You can change the AM tuning interval between 9kHz and 10kHz. After tuning in

any AM station, turn off the receiver.
Hold down the PRESET TUNING+ buttoh and press the 1/u (power) button. All
preset stations will be erased when you change the interval. To reset the interval,
repeat the procedure.

VIDEO section (except STR-SE491)

Inputs VIDEO, TV/SAT, 5.1CH/DVD:

1Vp-p 75Ω
Outputs VIDEO, MONITOR:

1Vp-p 75Ω

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 120V AC, 60Hz
Power consumption 220W
AC outlets STR-DE535/SE491:

2 switched,

total 120W/1A Max

STR-DE435:

1 switched,

total 120W/1A Max
Dimensions 430 × 157 × 366 mm

(17 × 61/8 × 145/8 inches)
Mass (Aporox.) STR-DE535: 11.1kg (24 lb 6 oz)

STR-DE435: 11.0kg (24 lb 3 oz)

STR-DE491: 11.2kg (24 lb 9 oz)
Supplid accessories FM wire antenna (1)

AM loop antenna (1)

Remote commander

(remote) (1)

LR6 (size - AA) batteries (3)

(STR-DE535 only)

R6 (size - AA) batteries (2)

(STR-DE435/SE491 only)

* Depending on the sound field setting and the source, there may be no sound

output.

Design and specifications are subject to change without notice.

MODEL IDENTIFICATION

— BACK PANEL —

Parts No.

MODEL PARTS No.

DE535: US model 4-216-927-0π
DE535: Canadian model 4-216-927-1π
DE535: Australian model 4-216-927-2π
DE535: E model 4-216-927-3π
DE535: Malaysia, Singapore model 4-216-927-4π
V525: Chinese model 4-216-927-5π
DE435: US model 4-217-181-0π
DE435: Canadian model 4-217-181-1π
DE435: Australian model 4-217-181-2π
DE435: Malaysia, Singapore model 4-217-181-3π
V424: Chinese model 4-217-181-4π
DE435: AEP model 4-217-181-5π
DE435: East European, CIS model 4-217-181-6π
SE491: US model 4-217-181-7π

— 2 —

SAFETY CHECK-OUT

TABLE OF CONTENTS

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 A C 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.

1. A commercial leakage tester, such as the Simpson 229 or RCA
WT -540A. F ollow the manufactur ers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated A C voltmeter . The “limit” indication
is 0.75 V, so analog meters must have an accurate low-v oltage
scale. The Simpson 250 and Sanwa SH-63Trd ar e 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)

1. GENETAL··········································································· 4

2. TEST MODE······································································ 6

3. DIAGRAMS

3-1. Circuit Boards Location ····················································· 7
3-2. Block Diagrams ·································································· 9

• Main Section ····································································9

• Power Section ································································ 11
3-3. Printed Wiring Board — Input Section — ·······················13
3-4. Schematic Diagram — Input Section — ·························· 15
3-5. Printed Wiring Board — Surround Section —················· 17
3-6. Schematic Diagram — Surround Section — ··················· 19
3-7. Printed Wiring Board — Display Section — ···················21
3-8. Schematic Diagram — Display Section — ······················ 23
3-9. Printed Wiring Board — Key Section — ························· 25
3-10. Schematic Diagram — Key Section —··························· 27
3-11. Printed Wiring Board — Rear Amp Section — ··············· 29
3-12. Schematic Diagram — Rear Amp Section —··················31
3-13. Printed Wiring Board — Power Amp Section —············· 33
3-14. Schematic Diagram —Power Amp Section — ················ 35
3-15. IC Pin Function Description············································· 37
3-16. IC Block Diagrams ··························································· 39

4. EXPLODEO VIEWS

4-1. Front Panel Section ·························································· 40
4-2. Chassis Section································································· 42

T o Exposed Metal

Parts on Set

AC

0.15

µ

F

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

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 .

1.5 k

Ω

Earth Ground

Voltmeter
(0.75 V)

5. ELECTRICAL PARTS LIST······································· 44

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMA TIQUES 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.

— 3 —

Front Panel

#¢

#£

1

23

4

5

6

7

SECTION 1

GENETAL

8 9 !º

!¡ !™ !£

!¢

!∞

#™

#º#¡

@§

@•

@£@¢@∞@¶@ª

1 1/u (POWER) button
2 TUNING +, – button
3 DIMMER button
4 DISPLAY button
5 PRESET/PTY SELECT +, – buttons (DE435),

PRESET TUNING +, – buttons (DE535)

6 RDS PTY button (DE435 only)
7 RDS EON button (DE435), AM button (DE535)
8 MD/TAPE button
9 5.1CH/DVD button
!º SUR button
!¡ SOUND FIELD ON/OFF, MODE +, – buttons
!™ SET UP button
!£ MASTER VOLUME control
!¢ TONE button
!∞ BASS BOOST button
!§ MUTING button
!¶ BALANCE control

!ª

!•

@º@¡@™

!¶

!§

!• NAME button
!ª ENTER button
@º MENU <, >, +, – buttons
@¡ BASS/TREBLE button
@™ PHONO button (DE535 only)
@£ TV/LD button (DE435), TV/SAT button (DE535)
@¢ TUNER button
@∞ VIDEO button
@§ CD button
@¶ FM/AM button (DE435), FM button (DE535)
@• FM MODE button
@ª MEMORY button
#º DIRECT button
#¡ Number buttons
#™ SHIFT button
#£ PHONES jack
#¢ SPEAKERS A. B switch

— 4 —

Rear Panel

1

!¶

2

3

!¢!∞!§

4

56

9!º!¡!™!£

8

7

1 ANTENNA (FM/AM)
2 5.1CH/DVD
3 MONITOR
4 WOOFER
5 SPEAKER (REAR)
6 SPEAKER (CENTER)
7 AC power cord
8 AC OUTLET
9 SPEAKER (FRONT)
!º IMPEDANCE SELECTOR (DE535 only)
!¡ S-LINK (DE535 only)
!™ VIDEO
!£ TV/LD (DE435), TV/SAT (DE535)
!¢ MD/TAPE
!∞ CD
!§ PHONO (DE535 only)
!¶ y SIGNAL GND (DE535 only)

— 5 —

SECTION 2

TEST MODE

SOFTWARE VERSION DISPLAY MODE

* The software version is displayed.
* Procedure:

While depressing the MD/TAPE and the DIRECT buttons
simultaneously, press the power [1/u] button to turn on the main
power . The model name, destination and the software v ersion are
displayed.

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 TV/SAT and the DIRECT buttons
simultaneously, press the power [1/u] button to turn on the main
power .

1. All segments turn on.

VIDEO, TV/SAT, MD/TAPE, CD, TUNER and PHONO LED
turn on.

2. Press the VIDEO button, confirm display

5.1CH/DVD, SUR, BASS/TREBLE, SET UP and N AME LED
turn on.

ALL CLEAR MODE

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

this mode before returning the product to clients upon completion
of repair.

* Procedure:

While depressing the TUNER and the MD/TAPE buttons
simultaneously, press the po wer [1/u] button to turn on the main
power . Alternatively , press 1/u more than 4S. The message ALL
CLEAR appears and initialization is performed.

SURROUND CLEAR MODE

* The preset sound field is cleared when this mode is activa ted.

Use this mode before returning the product to clients upon
completion of repair.

* Procedure:

While depressing the SOUND FIELD ON/OFF button, press the
power [1/u] button to turn on the main power . The message SUR
CLEAR appears and initialization is performed.

AM CHANNEL STEP 9 kHz/10 kHz
SELECTION MODE

* 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+ button,
press the power [1/u] button to turn on the main power. Either
the message AM 9k STEP or AM 10k STEP appears. Select the
desired step.

* For US/Canadian/E model only

3. Press the VIDEO button, confirm display

TONE, BASS BOOST and MUTING LED turn on.

4. Press the VIDEO button, All segments turn off.

5. Every pressing of the VIDEO b utton turns on each segment one
after another in the following order.
(Not only the VIDEO button, b ut also the other b uttons sach as
TV/SAT, MD/TAPE, CD, TUNER, PHONO, 1, 2, 3, 4, 5, 6, 7,
8, 9, 0 can be used.)

FACTORY SET MODE

* All preset contents are reset to the default setting.
* Procedure:

While depressing the VIDEO and the DIRECT buttons
simultaneously, press the power [1/u] button to turn on the main
power . The message F A CTOR Y appears and the present contents
are reset to the default values.

— 6 —

SECTIION 3

d

DIAGRAMS

STR-DE435/DE535/SE491/V424/V525

3-1. CIRCUIT BOARDS LOCATION

REAR AMP board

P.AMP board

SPK SELECT board

HEADPHONE board

DISPLAY board

KEY board

STANDBY board

VOL board

BALANCE board

VOLTAGE SELECTOR board
(DE 535 : E MODEL)

REAR SPK board

SURR board

INPUT board

BRIDGE-A board

BRIDGE-B boar

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)

For schematic diagrams.
Note:

• 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 Ω and 1/
specified.

• % : indicates tolerance.

• ¢ : internal component.

• 2 : nonflammable resistor.

• 1 : fusible 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.

• H : adjustment for repair.

• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM

• Voltages are taken with a V OM (Input impedance 10 MΩ).
Voltage v ariations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

F : FM
J : CD
g : VIDEO
I : PHONO

• Abbreviation
CND : Canadian model
AUS : Australian model
CH : Chinese model
MY : Malaysia model
SP : Singapore model

W or less unless otherwise

4

Note:

Les composants identifiés par
une marque ! sont cr itiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.

EA : Saudi Arabia model
EE : East European model

For printed wiring boards.
Note:

• X : parts extracted from the component side.

• ® : Through hole.

• ¢ : internal component.

• b : Pattern from the side which enables seeing.

C
Q

B

E

B

These are omitted.

CE

These are omitted.

• Wavef orm
– DISPLAY SECTION –

1

IC100 !™ (X1)

2

IC1001 !∞ (X IN)

5MHz

7.28MHz

4.3Vp-p

3.3Vp-p

— 7 — — 8 —

– INPUT SECTION –

3

IC230 !£

4.33MHz

2.8Vp-p

STR-DE435/DE535/SE491/V424/V525

3-2. BLOCK DIAGRAMS

— MAIN SECTION —

FM

AM

DO

EQ AMP
57

DO

ASTOP

AUTO STOP

IC201

TUNER UNIT

STEREO

SIGNAL

TMUTE

STEREO

TMUTE

DET OUT

S DATA

L OUT

R OUT

CLK

DATA

S CLK

S LAT

R CH

CE

TAPE/MD

TV

VIDEO

5.1 INPUT

DE535 ONLY

PHONO

INPUT

OUTPUT

75Ω

FM

AM

J201

L

LCD

J202

LINPUT

LOUT PUT

J203

L

L

LINPUT

J204

LFRONT

LREAR

28

30

29

26

22

25
21
24

TUNER

PHONO

CD

TAPE

REC OUT

TV/LD
VIDEO OUT
VIDEO IN

AUDIO SELECT

IC204

CE

CLK

13

15DI14

S DATA

S CLK

S LAT

DE435(CE)ONLY

RDS

4 2

IC230

13 14

X230

4.332MHz

COM
COM
COM

DOLBY PROLOGIC
MATRIX DECODER

LINE AMP

IC202

4

11

8

16

57

LINE AMP

IC203

57

9

FCC

14

IC301

CONTROL

DATA

CLK

47

46

S DATA

S CLK

L OUT

41

S OUT

C OUT

CE

45

D LAT

11

39

13

38

20k

L.P.F

DEC

CLK
2DI3

S DATA

S CLK

SURROUND

PROCESSOR

IC302

L OUT

25

VOL/

MUTE

DC CUT

9

Q371

SL OUT

23

MUTE
Q405

MUTE
Q408

MUTE
Q409

MUTE
Q407

MUTE SW
Q421,422

BOOST

DET

Q401,402

5k/7k

ADM

L.P.F

CE

FCL18FCLS

4

20

D LAT

L.P.F

IC400

5
6

IC403

31

IC402

57

13

7

TONE CONTROL

IC401

BASS

TREBLE

LEVEL SHIFT

8DI9

S DATA

S CLK

RY401

14

15

12

11

STB10CLK

T LAT

BALANCE

RV402

DOWN

VOLUME

RV401

L

C

LINE AMP

IC403

57

UP

A

POWER

W

SECTION
(Page 11)

SL

M

• RCH is omitted

• Signal Path

: FM

: PHONO

: CD (ANALOG)

: VIDEO

CENTER

WOOFER

MONITOR

VIDEO 1

5.1 IN

TV/LD

OUT

OUTOUT

RELAY
DRIVE

Q403

VOL

3

MOTOR

2

51

VOL +

IC102

VOL-

2

3

4

S1

S2

V MUTE

DO

24

IF DATA

STEREO

AUTO STOP

21

23

STEREO

AUTO STOP

TMUTE

22

28

TUNER MUTE

SIGNAL

T LAT

S LAT

D LAT

S CLK

S DATA

18

38

RDS CLK15RDS DAT

19

S DATA

S CLOCK20S LATCH9D LATCH

17

T LATCH

SYSTEM

CONTROL

IC100(1/2)

6

VIR CNTL

54

S MUTE

49

BASS BOOST

52

41

DIRECT PASS

VIDEO SELECT

IC281

VCC

8

J208

SW1

SW2

SW2

VEE

14

13

2

4

M

11

12

V3

1

V1

J281

10

M OUT

IN

3

V2

5

OUT

16

IC280

-5V

3 2

REG

+5V

-15V

UP

8

DOWN

7

— 9 — — 10 —

— POWER SECTION —

+B

-B

L

+B

-B

C

A

MAIN

SECTION

(Page 10)

W

+B

-B

SL

MUTE

Q691,692

8

AC MUTE

12
X101
5MHz

X1

11

X2

16

POWER AMP(L)

IC501

VCC

13

VCC

+VE

14

VEE

15

IN

NF

6

MUT

1

-VE

POWER AMP(C/W)

IC601

VCC

9

+VE

VSS

7

IN

1

NF

-VE

POWER AMP(SL)

IC701

VCC

13

VCC

+VE

14

VEE

15

IN

NF

6

MUT

1

-VE

KEY1

KEY2

33

32 58

FUNCTION

KEY

S102-120

S121,122

S123-148

EXCEPT

DE435 MODEL

2

5

3

6

2

5

2

5

3

KEY331KEY4

30

LIMITER

Q504

LIMITER

Q505

LIMITER

Q604

LIMITER

Q605

LIMITER

Q704

LIMITER

Q705

BOOSTER

Q506

BOOSTER

Q507

BOOSTER

Q606

BOOSTER

Q607

BOOSTER

Q706

BOOSTER

Q707

SYSTEM CONTROL/

MODE CONTROL

IC100(2/2)

NAME LED

SET UP LED

TONE LED

62 60

Q125

Q129

Q127

Q131

LED DRIVE

D125,127,129,131

SURR LED

61

Q133

D133, 119 ,120, 123, 124

D133, 119 ,120, 123, 124

CUR DET

Q508

CUR DET

Q608

CUR DET

Q708

PHONO LED

5.1 INPUT LED

TUNER LED

CD LED

6457 65

63

66 67 68

Q124

Q128 Q132

Q120

Q126

LED DRIVE

D126 ,128,130,131

MD/TAPE LED

TV/DBSLED

Q130

PROTECTOR

Q660-662

47

PROTECTOR

VIDEO LED

DE435 MODEL

EXCEPT

PROTECTOR

Q509,510

PROTECTOR

Q609,610

MUTING LED

59

Q122

LED DRIVE

D122

Q511

Q611

BASS/TREBLE LED

69

Q115

LED DRIVE

D115

44

B.BOOST LED

70

Q116

LED DRIVE

D116

FRONT RY

S101

SPEAKERS

RELAY

DRIVE

Q513

A+B

OFF

A

B

50

SP OFF

P1 17

.

71 78

80 88

FL101

FL TUBE

F2 F1

RY503

43

G1 12

100 89

STR-DE435/DE535/SE491/V424/V525

S(L)

S(R)

+5V

J501

PHONES

• RCH is omitted

F801

F802

F2

AUS,AEP,
CND,SP
MODEL

JW901

JW902

US,CND MODEL

• Signal Path
:FM

:CD (ANALOG)

• Abbreviation

AUS : Australian
CND : Canadian
SP : Singapore

DE535 : E MODEL

120V

0V

120V
100V

0V

T901

F901

US,CND,E MODEL

AUS,AEP,
CND,SP
MODEL

F903

JW925

F904

S901

VOLTAGE

SELECTOR

CNJ901

120V
240V
220V

120V
240V
220V

120V
240V
220V

CNP900

AC IN

L

R

C

J651

WOOFER

SWITCH

Q651,652

3

14

5

11

12

15 16

7.28MHz

IC804

+5V

REG

I/R

CONT

IC1001

X1000

TM501
FRONT

SPEAKER

TM701

SURROUND

SPEAKER

1

IC101

REMOTO
CONTROL
RECEIVER

RESET

Q101,102

33

2

SWITCH

Q655,656

INV SW

Q657

3

IC802

+12V

REG

1

D108

+5.6V

IC1002

DET

D801

D802-805

1

2

DELAY
+B SW

Q902

POWER

CONT
IC901

3

6

+V

-V

-30V

58

D1003-1005

J283

S-LINK

RELAY

DRIVE
Q901

D901-904

REG

Q801

RY901

D806 F1

T902

IC809

IC809

+5V

3

1

REG

IC801

+15V

3

REG

IC803

-15V

3

REG

Q1004,1005

I/R

LED

DRIVE

DE535 ONLY

R CH

RY501
RELAY
DRIVE

Q546

RY502
RELAY
DRIVE

Q596

RY601

RELAY
DRIVE

Q646

RY651
RELAY
DRIVE

Q696

RY701

RELAY
DRIVE

Q746

45

42

W RY

SUR RY

CENTER RY

CTRL A1OUT

36

Q1001

I/O

BUFFER

POWER RY

INITALIZE

CTRL A1 LAT27CTRL A1 IN

5

37

S501

IMPEDANCE

SELECTOR

SIRCS

RESET

STOP

R CH

R CH

+B

-B

SWITCH

Q653,654

8

Q1002

I/O

BUFFER

+15V
+12V

-15V

4

48

26

10

39

— 11 — — 12 —

STR-DE435/DE535/SE491/V424/V525

3-3. PRINTED WIRING BOARD — INPUT SECTION —

12

345678910111213

A

B

C

D

• Refer to page 7 for Circuit Boards Location.

• Semiconductor

Location

Ref. No. Location

IC201 C-12
IC202 D-9
IC203 D-8
IC204 E-11
IC230 B-12
IC501 E-7
IC601 F-7
IC701 E-5
IC801 C-2
IC802 C-5
IC803 C-4
IC804 C-6

Q691 E-8
Q692 E-8

E

F

G

H

I

AEP,EE,CIS MODEL

16

— 13 — — 14 —

STR-DE435/DE535/SE491/V424/V525

3-4. SCHEMATIC DIAGRAM — INPUT SECTION —

• Refer to page 39 for IC Block Diagrams.

• Refer to page 8 for Waveforms.

11P

4.332
MHz

15P

AEP,EE,CIS MODEL

— 15 — — 16 —

STR-DE435/DE535/SE491/V424/V525

3-5. PRINTED WIRING BOARD — SURROUND SECTION —

12

345678910111213

A

B

C

D

• Refer to page 7 for Circuit Boards Location.

E

F

G

H

I

• Semiconductor Location

Ref. No. Location Ref. No. Location

D401 G-4
D402 G-2
D403 B-6
D404 C-6
D405 G-4
D406 C-6
D407 C-6
D408 C-5

16

EXCEPT
SE491
MODEL

SVC300 D-6
IC280 E-12

IC281 G-12
IC301 E-9
IC302 E-6
IC303 D-8
IC400 D-3

Ref. No. Location

IC401 D-3
IC402 F-3
IC403 B-7

Q401 E-4
Q402 D-5
Q403 B-8
Q404 B-5

Ref. No. Location

Q405 B-5
Q406 F-4
Q407 F-4
Q408 C-6
Q409 C-9
Q451 E-3
Q452 D-2

— 17 — — 18 —

STR-DE435/DE535/SE491/V424/V525

3-6. SCHEMATIC DIAGRAM — SURROUND SECTION —

-5V REG

F.MUTE

Q422

DTC124ES

• Refer to page 39 for IC Block Diagrams.

C419

10p

Q421

DTC124ES

DE435 : US,CND
DE535/V525
MODEL

— 19 — — 20 —

STR-DE435/DE535/SE491/V424/V525

3-7. PRINTED WIRING BOARD — DISPLAY SECTION —

12

34567891011121314

A

B

C

D

• Refer to page 7 for Circuit Boards Location.

E

• Semiconductor

Location

F

G

H

I

Ref. No. Location

D107 C-10
D108 C-10
D110 C-14
D111 B-13
D112 B-13
D113 B-13
D114 B-13
D115 C-3
D116 C-2
D117 H-14
D118 H-14
D1001 D-12
D1002 D-12
D1003 C-10
D1004 C-11
D1005 C-11
D1104 C-11
D1105 C-12

IC100 C-6
IC101 C-4
IC102 E-4
IC1001 D-11
IC1002 C-11

16

Q101 D-14
Q102 C-14
Q115 D-2

J

Q116 D-2
Q1001 D-12
Q1002 D-12
Q1004 C-12
Q1005 C-11

— 21 — — 22 —