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US Model

STR-DE335/SE391

Canadian Model

AEP Model

E Model

Australian Model

STR-DE335

Chinese Model

STR-V323

Photo: STR-DE335 US model

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

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

Surround mode

STR-DE335/V323

and 5.1 CH/DVD

US, Canadian models:

mode

(8 ohms at 1 kHz, THD

(Reference)

0.8%)

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

– Continued on next page –

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/TAPE, VIDEO
5.1 CH/DVD:

10 Hz – 50 kHz ± 1 dB

2001G0500-1

C

 2001.7

– 2 –

Inputs

Sensitivity

Impedance

S/N

PHONO
(STR-

4 mV

50

70 dB

SE391)

kilohms

CD,
5.1 CH/

150 mV

DVD,

(AEP model)

50

MD/TAPE,

250 mV

kilohms

80 dB

TV/SAT,

(EXCEPT

(TV/LD)

AEP models)

VIDEO

Outputs

MD/TAPE REC OUT:
Voltage: 150 mV, (US, AEP

models)

Voltage: 250 mV,

(Canadian, E, Malaysia,
Singapore, Australian and
Chinese models)
Impedance: 10 kilohms

VIDEO AUDIO OUT:

Voltage: 150 mV, (US,
AEP models)
Voltage: 250 mV,
(Canadian, E, Malaysia
Singapore, Australian and
Chinese models)
Impedance: 10 kilohms

WOOFER:

Voltage: 2V
Impedance: 1 kilohms

PHONES: Accepts low and

high  impedance
headphones

Muting

Full mute

BASS BOOST

+ 10 dB at 70 Hz

TONE

± 8 dB at 100 Hz and

10 kHz

FM stereo, FM/AM superheterodyne tuner

Tuning range

87.5 – 108.0 MHz

Antenna terminals 75 ohms, unbalanced
Intermediate

10.7 MHz

frequency
Sensitivity

Mono: 18.3 dBf, 2.2 

µ

V/75

ohms

Stereo: 38.3 dBf, 22.5 

µ

V/75

ohms
(AEP model)

Mono: 18.3 dBf, 4.5 

µ

V

Stereo: 38.3 dBf, 45 

µ

V

(EXCEPT AEP models)

Usable sensitivity 11.2 dBf, 2 

µ

V (IHF) (US

model)

11.2 dBf, 1 

µ

V/75 ohms

(IHF)

(AEP model)

11.2 dBf, 1 

µ

V (IHF)

(EXCEPT US, AEP
models)

S/N

Mono: 76 dB
Stereo: 70 dB

Harmonic

Mono: 0.3 %

distortion at

Stereo: 0.5 %

1 kHz
Separation

45 dB at 1kHz

Frequency

30 Hz – 15 kHz     dB

response
Selectivity

60 dB at 400 kHz

Tuning range

AEP, Malaysia, Singapore,

Australian and Chinese
model:

531 – 1602 kHz (9 kHz step)
US model:
530 – 1710 kHz (10kHz

step)

**

531 – 1710 kHz (9 kHz step)
Canadian, E models:
530 – 1610 kHz (10kHz

step)

**

531 – 1602 kHz (9 kHz step)

Antenna

Loop antenna

Intermediate

450 kHz

frequency
Usable sensitivity 50 dB/m (at 1,000kHz or

999 kHz) (US model)

50 dB/m (at 999 kHz)

(EXCEPT US models)

S/N

54 dB (at 50 mV/m)

Harmonic

0.5 % (50 mV/m, 400Hz)

distortion
Selectivity

At 9 kHz: 35 dB
At 10 kHz: 40 dB

** You can change the AM tuning interval be-

tween 9 kHz and 10 kHz.  Turn off the re-
ceiver and press 

1/u (power) for more than

4 seconds until “INITIAL” appears.
1) After tuning in any  AM station, turn off

the receiver.

2) Hold down PRESET TUNING +  button

and press the 

1/u (power) 

button.  

“9k

STEP” appears.

To change to 10k Step, repeat step 1 and 2 until
“10k STEP” appears.  Note that all preset
stations, index names and sound field are
cleared after you make the procedure above.

Inputs

VIDEO, TV/SAT (TV/LD),

5.1 CH/DVD:
1 Vp-p 75 ohms

Output

VIDEO, MONITOR:

1 Vp-p 75 ohms

System

Tuner section:

PLL quartz-locked digital

synthesizer system

Preamplifier section:

Low-noise NF type
equalizer

Power amplifier section:

Pure-complementary
SEPP

Power

US, Canadian models:

requirements

120 V AC, 60 Hz
Australian model:
240 V AC, 50 Hz
AEP, Malaysia, Singapore

and Chinese models:

230 V AC, 50/60 Hz
E model
120/220/240 V AC, 50/60 Hz

Power

US model: 230 W

consumption

Canadian model:
325 VA
AEP model: 225 W
Malaysia, Singapore and

Australian and Chinese
models:

235 W
E model
245 W

+0.5
–2

AC outlets

STR-DE335
US, Canadian models:
1 switched, 120 W/1A max
STR-DE335
AEP, E, Malaysia,

Singapore, Australian
models:

STR-V323
1 switched, 100 W max
STR-SE391
2 switched, total 120 W/1A

max

Dimensions

430 

×

 144 

×

 306 mm

Mass (Approx.)

STR-DE335: US model
8.7 kg
STR-DE335: AEP model
7.7 kg
EXCEPT DE335: US, AEP

models

8.8 kg

Supplied

FM wire antenna (1)

accessories

AM loop antenna (1)
Remote commander

(remote) (1)

Size AA (R6) batteries (2)

The specification measured is under
• 230  AC, 50Hz condition (AEP, Malaysia,

Singapore and Chinese models)

• 240  AC, 50Hz condition (Australian model)

Design and specifications are subject to change
without notice.

– 3 –

!

!

...............................................

4

...................................................................

5

.........................................................

7

...............................................................

9

5-1. Block Diagram  – MAIN Section (1/2) – ....................... 11
5-2. Block Diagram  – MAIN Section (2/2) – ....................... 13
5-3. Block Diagram  – DISPLAY/

POWER SUPPLY Section – ........................................... 15

5-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 17

5-5. Printed Wiring Board  – MAIN Board – ........................ 21
5-6. Printed Wiring Boards  – REAR AMP Board/

SP SW Board/SECONDARY Board/
STANDBY Board/PRIMARY Board/
VOL SEL Board – ........................................................... 23

5-7. Schematic Diagram  – MAIN Board (1/4)/

REAR AMP Board – ....................................................... 25

5-8. Schematic Diagram  – MAIN Board (2/4)/

SP SW Board – ............................................................... 27

5-9. Schematic Diagram  – MAIN Board (3/4) – .................. 29
5-10. Schematic Diagram  – MAIN Board (4/4)/

SECONDARY Board /STANDBY board/
PRIMARY Baord/VOL SEL Board– ............................. 31

5-11. Printed Wiring Board  – PANEL Section – .................... 33
5-12. Schematic Diagram  – PANEL Section – ....................... 35
5-13. Printed Wiring Boards  – VOLUME Board/

TONE Board/VIDEO Board/PHONO Board – .............. 37

5-14. Schematic Diagram  – VOLUME Board/

TONE Board/VIDEO Board/PHONO Board – .............. 39

5-15. IC Pin Function Description ........................................... 44

................................................ 46

............................... 50

!

– 4 –

1234

PART No.

MODEL

PART No.

DE 335: US model

4-218-844-0

[]

DE 335: Canadian model

4-218-844-1

[]

DE 335: Australian model

4-218-844-2

[]

DE 335: Malaysia, Singapore models

4-218-844-3

[]

V 323

4-218-844-4

[]

DE 335: E model

4-218-844-5

[]

DE 335: AEP model

4-218-844-6

[]

SE 391

4-218-844-7

[]

After correcting the original service problem, perform the follow-
ing safety check 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.

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. Follow the manufacturers’ 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 AC voltmeter. The “limit” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able.  (See Fig. A)

1.5 k

Ω

0.15 

µ

F

AC
voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground