SONY STR-DE335, STR-SE391, STR-V323 SERVICE MANUAL

STR-DE335/SE391/V323

SERVICE MANUAL

Photo: STR-DE335 US model

SPECIFICATIONS

Audio power specifications (US model)

POWER OUTPUT AND TOTAL HAR­MONIC DISTORTION

With 8-ohm load, both channels driven,
from 20a) – 20,000 Hz, rated 100 watts
per channel minimum RMS power, with
no more than 0.09 %b) total harmonic
distortion from 250 milliwatts to rated
output.
STR-SE391:
a) 40Hz
b) 0.5 %

Amplifier section

Power output
Stereo mode STR-DE335/V323

US, Canadian models:
(8 ohms at 20 Hz – 20 kHz

less than 0.09 % total
harmonic distortion)

100 W + 100 W
AEP model:
(DIN 1 kHz, 4 ohms)

80 W + 80 W
Malaysia, Singapore,

Chinese, Australian

models:
Rated power:
(8 ohms at 1 kHz,

THD 0.7 %)

80 W + 80 W
Reference power:
(8 ohms at 20 Hz – 20 kHz,

less than 0.09 % total

harmonic distortion)

70 W + 70 W
E model:
Rated power: (8 ohms at

1kHz, THD 0.7 %)

100 W + 100 W

Surround mode STR-DE335/V323
and 5.1 CH/DVD US, Canadian models:
mode (8 ohms at 1 kHz, THD
(Reference) 0.8%)

Reference power:
(8 ohms at 20 Hz – 20 kHz,

less than 0.09 % total
harmonic distortion)
95 W + 95 W

STR-SE391
(8 ohms at 40 Hz – 20 kHz,

less than 0.5 % total
harmonic distortion)

100 W + 100 W

Front: 80 W/ch
Center: (Pro Logic mode)

80 W
Rear: 80 W/ch
AEP model:
(DIN 1 kHz, 4 ohms)
Front: 70 W/ch
Center: 70 W
(only in PRO LOGIC

mode)
Rear: 70 W/ch
E, Malaysia, Singapore,

Chinese, Australian

models:
Rated power: (8 ohms at

1 kHz, THD 0.7 %)
Front: 80 W/ch
Center: (Pro Logic mode)

80 W
Rear: 80 W/ch

US Model

STR-DE335/SE391

Canadian Model

AEP Model

E Model

Australian Model

STR-DE335

Chinese Model

STR-V323

STR-SE391
(8 ohms at 1 kHz,

THD 0.5 %)
Front: 80 W/ch
Center: (Pro Logic mode)

80 W
Rear: 80 W/ch
Reference power:
(8 ohms 20 Hz – 20 kHz,

less than 0.09 % total

harmonic distortion)
Front: 70 W/ch
Center: (Pro Logic mode)

70 W
Rear: 70 W/ch
RMS power:
(8 ohms at 1 kHz,

THD 10 %)
Front: 100 W/ch
Center: (Pro Logic mode)

100 W
Rear: 100 W/ch

Frequency PHONO: RIAA
response equalization curve ±0.5 dB

(STR-SE391)
TV/SAT (TV/LD), CD,
MD/T APE, VIDEO

5.1 CH/DVD:

10 Hz – 50 kHz ± 1 dB

– Continued on next page –

FM STEREO/FM-AM RECEIVER

MICROFILM

SECTION 5

DIAGRAMS

STR-DE335/SE391/V323

5-1. BLOCK DIAGRAM – MAIN Section (1/2) –

(STR-DE335/V323)

5.1 CH/DVD
VIDEO

TV/SAT

VIDEO IN

STR-DE335: US, Canadian,
Australian

TV/LD

VIDEO IN

STR-DE335: AEP, E, Malaysia,
Singapore/STR-V323

VIDEO IN

TV/LD

AUDIO IN

STR-DE335: US, Canadian,
Australian/STR-SE391

STR-DE335: AEP, E, Malaysia,
Singapore/STR-V323

J451

PHONO

IN

(STR-SE391)

FM 75Ω

COAXIAL

AM

VIDEO

ANTENNA

J251

J252 (1/2)

L

R

VIDEO

AUDIO IN

TV/SAT

AUDIO IN

MD/TAPE IN

CD IN

05

12

1
3

J402 (1/2)

L

R

L

R

J401 (1/2)

L

R

L

R

EQ AMP

IC402

FM/AM TUNER PACK

FM-ANT
FM-ANT

GND

AM-ANT
AM-ANT

GND

DET OUT

(STR-DE335: AEP)

VIN3

VIN1
VIN2

R-CH

R-CH

R-CH

R-CH

R-CH

L OUT
R OUT

S.DATA

S.CLK

S.LAT

TUNED

STEREO

SIGNAL
T.MUTE

VIDEO SELECT SWITCH,

VIDEO AMP

IC251

SW2

DO

SW1
13

VIDEO

26

R-CH

TV/SAT

25

R-CH

MD/TAPE

24

R-CH

CD

29

R-CH

PHONO

30

R-CH

TUNER

28

R-CH

R-CH

DATA

CLK
EN1

PLL DATA

TUNED

STEREO

SIGNAL

TUNER-MUTE

MUTE

MUTE

MUTE2

MUTE1

1142

VIDEO

AMP

VIDEO

AMP

IC MUTE

FUNCTION

S1
S2

SWITCH

IC401

4

VOUT1

VOUT2

COM

COM

MUX

10

5

23

27

LEVEL
SHIFT

57 kHz

BAND-PASS

FILTER

RDS DECODER

IC1

J252 (2/2)

20

SHIFT

REGISTER

& LATCH

SC

OUT

8 7

MONITOR

VIDEO OUT

VIDEO OUT

REC COM

VIDEO

CIN

CPU

INTERFACE

COMPARATOR

CLOCKED

5.1 CH/
DVD

VIDEO

REC

R-CH

TAPE

REC

R-CH

S.DATA

S.CLK
S.LAT

WOOFER

FRONT

REAR

CENTER

21

R-CH

22

R-CH

14
15
13

CONTANS LOOP

VARIABLE &

FIXED DIVIDER

OSCILLATOR

& CLOCK

OSCI

13

L

R

L

R

DATA

CLK
EN1

OSCO

14

J501

J402 (2/2)

J401 (2/2)

X1

4.332MHz

R-CH

L

VIDEO
AUDIO

OUT

R

L

MD/TAPE
REC OUT

R

BIPHASE SYMBOL

DECODER

CLOCK

REGENERATION

& SYNC

DOLBY SURROUND

PRO-LOGIC DECODER

IC300

FCC-IN1

14

L-IN

9

R-IN

10

ENABLE

OSC1

48

DIFFERENTIAL

DECODER

L-OUT

R-OUT

S-OUT

C-OUT

DATA

CLK

RDDA

RDCL

RV404

MASTER VOLUME

WOOFER

–1

–4

–2

–5

–6

–3

UP

8

M

7

23

22

25

24

IC201 (1/2)

IC.MUTE

55
58

S1
S2

57

10

S.DATA

9

S.CLK

12

S.CE (LC7822)

13

S.CE (LV1018)

11

PLL.DATA
AUTO-STOP

18
19

STEREO-IN
SIGNAL

24

TUNER-MUTE

45

31

RDS DATA IN

46

RDS CLK IN

MUTING

Q366

MUTING

Q363

MUTING

Q364

MUTING

Q361

MUTING

Q362

MUTING

Q365

RV421

BASS

54

FUNC.MUTE

VOL UP

VOL DOWN

WOOFER-RLY

SP-RLY
SURR-RLY
REAR-RLY

PROTECT

–1

–2

X1

X2

RV422

TREBLE

–1

–2

43423

34

35

36
21
22
14
16

RV423

BALANCE

UP
DOWN

2

X201

4.19MHz

WOOFER-RLY

SP-RLY
SURR-RLY
REAR-RLY

PROTECT

LINE AMP

IC302 (1/2)

LINE AMP

LINE AMP

IC404 (1/2)

–1

LINE AMP

IC404 (2/2)

–2

LINE AMP

IC302 (2/2)

VOLUME

MOTOR DRIVE

IC202

MOTOR

DRIVE

IC502

DOWN

DOLBY SURROUND
PASSIVE DECODER

IC301

18

FCL-IN

LS-OUT

FCR-IN

19

FCLS-IN

20

21

39

CLK

EN2

40
41
42

11

12

13

3
2
4

(STR-DE335/V323)

OSC

41

40

39

38

46
47
45

DATA

2

16

FCRS-IN

LC-INB
LC-INE
CR-OT
CR-IN

L-IN

R-IN

S-IN

DATA
CLK
ENABLE

IC MUTE
S1
S2

DATA
CLK
EN1
EN2
PLL DATA

TUNED
STEREO
SIGNAL
TUNER-MUTE

RS-OUT

L-OUT

R-OUT

SYSTEM CONTROLLER

S-LCH

S-RCH

LCH

RCH

CENTER

A

(Page 11)

B

(Page 11)

C

(Page 11)

D

(Page 11)

E

(Page 11)

F

(Page 11)

G

(Page 11)

• SIGNAL PATH
: TUNER (FM)

: VIDEO

– 11 – – 12 –

STR-DE335/SE391/V323

5-2. BLOCK DIAGRAM – MAIN Section (2/2) –

LCH

D

(Page 10)

E

(Page 10)

H

(Page 13)

B

(Page 10)

C

(Page 10)

RCH

BASS
BOOST

S-LCH

S-RCH

BASS BOOST

FILTER AMP

Q452

BASS BOOST

FILTER AMP

Q402

BASS BOOST

SWITCH

Q401

BASS BOOST

SWITCH

Q451

POWER AMP

IC701 (1/2)

IN1

6

NF1

5

POWER AMP

IC702 (1/2)

IN1

6

NF1

5

POWER AMP

IC701 (2/2)

IN2

8

NF2

9

POWER AMP

IC501 (1/2)

IN1

6

NF1

5

POWER AMP

IC702 (2/2)

PRE

DRIVE

PRE

DRIVE

PRE

DRIVE

PRE

DRIVE

DRIVER

NF

DRIVER

NF

DRIVER

NF

DRIVER

NF

+VOUT1
–VOUT1

+VOUT1
–VOUT1

+VOUT2
–VOUT2

+VOUT1
–VOUT1

J741

PHONES

S701–3

SPEAKERS A

Ø ON ø OFF

ON

OFF

S701–3–1

ON

OFF

S701–3–2

TM701

+

–

+

–

+

–

+

–

TM601

+

–

+

–

A

L

B

A

B

L

REAR

R

SPEAKERS FRONT

IMPEDANCE

USE 8 – 16Ω

(EXCEPT STR-DE335: AEP)

SPEAKERS FRONT

IMPEDANCE

USE 4 – 16Ω

(STR-DE335: AEP)

R

SPEAKERS

IMPEDANCE

USE 8 – 16Ω

(EXCEPT STR-DE335: AEP)

SPEAKERS

IMPEDANCE

USE 4 – 16Ω

(STR-DE335: AEP)

ONOFF

ONOFF

–2

S701–2

SPEAKERS A

Ø ON ø OFF

+

S701–2–1

2
3

2
3

12
11

2
3

BIAS

Q701, 702

BIAS

Q751, 752

BIAS

Q651, 652

BIAS

Q501, 502

FINAL

DRIVER

Q703, 704

FINAL

DRIVER

Q753, 754

FINAL

DRIVER

Q653, 654

FINAL

DRIVER

Q503, 504

OVER LOAD

DETECT

Q720

OVER LOAD

DETECT

Q770

OVER LOAD

DETECT

Q670

OVER LOAD

DETECT

Q520

+

+

+

–1

–2

RY701

SPEAKER PROTECT

RELAY DRIVE

Q710

S701–1–1

SPEAKERS B

Ø ON ø OFF

OFF

ON

S701–1–2

SPEAKERS B

Ø ON ø OFF

OFF

ON

SPEAKER PROTECT

RELAY DRIVE

Q510

S701–2–2

–1

–2

RY551

F

(Page 10)

A

(Page 10)

G

(Page 10)

05

CENTER

WOOFER

WOOFER-RLY,
SP-RLY,
SURR-RLY,
REAR-RLY,
PROTECT

IN2

8

NF2

9

POWER AMP

IC501 (2/2)

IN2

8

NF2

9

PRE

DRIVE

PRE

DRIVE

DRIVER

NF

DRIVER

NF

+VOUT2
–VOUT2

+VOUT2
–VOUT2

WOOFER-RLY

12
11

Q601, 602

12
11

WOOFER SELECT

RELAY DRIVE

Q367

BIAS

RY301

FINAL

DRIVER

Q603, 604

OVER LOAD

J253

WOOFER

AUDIO OUT

DETECT

Q620

D721

PROTECT

SWITCH

Q721 – 723

D203

PROTECT

–1

+

D725
D726
D723

SP-RLY

REAR-RLY

SURR-RLY

SPEAKER PROTECT

RELAY DRIVE

Q610

D728
D727

D311

D312

RY601

S701–4–2

SPEAKERS A

Ø ON ø OFF

ON

OFF

– 13 – – 14 –

+

CENTER

–

+

• SIGNAL PATH
: TUNER (FM)