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STR-DE435/DE535/SE491/V424/V525
SERVICE MANUAL
Ver 1.1 2003. 05
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
Photo: STR-DE535
Chinese Model
STR-V424/V525
Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol
a
“AC-3” and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.
SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 8-ohm load, both channels driven, from 20
a)
–
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-SE491:
a) 40Hz
b) 0.5%
Frequency response
PHONO: RIAA
equalization curve
±0.5dB
(except STR-DE435)
TV/SAT, CD, MD/
TAPE, VIDEO, 5.1CH/
DVD
10Hz – 50kHz ± 1dB
Muting
BASS BOOST
TONE
Full mute
+8dB at 70Hz
±8dB at 100Hz and
10kHz
Tuner section
FM Stereo, FM/AM superheterodyne tuner
Inputs
Sensitivity
Impedance
50
kilohms
S/N
86dB
PHONO
(except STR-
DE435)
CD,
5.1CH/
DVD,
MD/TAPE,
TV/SAT,
VIDEO
Outputs
FM tuner section
Tuning range
Antenna terminals
Intermediate frequency
Sensitivity
87.5 – 108.0MHz
75Ω, unbalanced
10.7MHz
Mono: 18.3dBf,
4.5µV
Stereo: 38.3dBf,
45µV
11.2dBf, 2µV (IHF)
Mono: 76dB
Stereo: 70dB
Mono: 0.3%
Stereo: 0.5%
45dB at 1kHz
30Hz –15kHz
+0.5
dB
–2
60dB at 400kHz
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
STR-DE535/435:
(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
4mV
250mV
50
kilohms
96dB
Usable sensitivity
S/N
Harmonic
distortion at 1kHz
Separation
Frequency response
Selectivity
Surround mode and
5.1CH/DVD mode
MD/TAPE REC OUT:
Voltage: 250mV,
Impedance: 10kilohms
VIDEO AUDIO OUT:
Voltage: 250mV,
Impedance: 10kilohms
WOOFER:
Voltage: 2V
Impedance: 1kilohms
PHONES: Accepts low
and high impedance
headphones
— Continued on next page —
FM STEREO FM-AM RECEIVER
AM tuner section
Tuning range
10kHz interval**
530 – 1,710kHz
9kHz interval
531 – 1,710kHz
Loop antenna
450kHz
50dB/m (at 1,000kHz)
54dB (at 50mV/m)
0.5% (50mV/m, 400Hz)
At 10kHz: 40dB
At 9kHz: 35dB
MODEL IDENTIFICATION
— BACK PANEL —
Antenna
Intermediate frequency
Usable sensitivity
S/N
Harmonic distortion
Selectivity
Parts No.
** 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
Outputs
VIDEO, TV/SAT, 5.1CH/DVD:
1Vp-p 75Ω
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
120V AC, 60Hz
220W
STR-DE535/SE491:
2 switched,
total 120W/1A Max
STR-DE435:
1 switched,
total 120W/1A Max
430
×
157
×
366 mm
(17
×
6
1
/
8
×
14
5
/
8
inches)
STR-DE535: 11.1kg (24 lb 6 oz)
STR-DE435: 11.0kg (24 lb 3 oz)
STR-DE491: 11.2kg (24 lb 9 oz)
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)
Power requirements
Power consumption
AC outlets
MODEL
DE535: US model
DE535: Canadian model
DE535: Australian model
DE535: E model
DE535: Malaysia, Singapore model
V525: Chinese model
DE435: US model
DE435: Canadian model
DE435: Australian model
DE435: Malaysia, Singapore model
V424: Chinese model
DE435: AEP model
DE435: East European, CIS model
SE491: US model
PARTS No.
4-216-927-0π
4-216-927-1π
4-216-927-2π
4-216-927-3π
4-216-927-4π
4-216-927-5π
4-217-181-0π
4-217-181-1π
4-217-181-2π
4-217-181-3π
4-217-181-4π
4-217-181-5π
4-217-181-6π
4-217-181-7π
Dimensions
Mass (Aporox.)
Supplid accessories
* Depending on the sound field setting and the source, there may be no sound
output.
Design and specifications are subject to change without notice.
—2—
SAFETY CHECK-OUT
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.
TABLE OF CONTENTS
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
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. 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)
To Exposed Metal
Parts on Set
2.
3.
4. EXPLODEO VIEWS
4-1. Front Panel Section ·························································· 40
4-2. Chassis Section ································································· 42
5. ELECTRICAL PARTS LIST
······································· 44
0.15
µ
F
1.5 k
Ω
AC
Voltmeter
(0.75 V)
Earth Ground
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.
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.
—3—
SECTION 1
GENETAL
Front Panel
1
2 3 4 56 7
8 9 !º
!¡
!™
!£
!¢
!∞
#¢
#£
#™ #¡ #º @ª @¶ @§ @∞ @¢ @£ @™
@•
@¡
@º
!ª !•
!¶
!§
1
2
3
4
5
6
7
8
9
!º
!¡
!™
!£
!¢
!∞
!§
!¶
1/u
(POWER) button
TUNING +, – button
DIMMER button
DISPLAY button
PRESET/PTY SELECT +, – buttons (DE435),
PRESET TUNING +, – buttons (DE535)
RDS PTY button (DE435 only)
RDS EON button (DE435), AM button (DE535)
MD/TAPE button
5.1CH/DVD button
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
@¡
@™
@£
@¢
@∞
@§
@¶
@•
@ª
#º
#¡
#™
#£
#¢
NAME button
ENTER button
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
MEMORY button
DIRECT button
Number buttons
SHIFT button
PHONES jack
SPEAKERS A. B switch
—4—
Rear Panel
1
2
3
4
5
6
!¶
!§ !∞ !¢
!£ !™
!¡
!º
9
8
7
1
2
3
4
5
6
7
8
9
!º
!¡
!™
!£
!¢
!∞
!§
!¶
ANTENNA (FM/AM)
5.1CH/DVD
MONITOR
WOOFER
SPEAKER (REAR)
SPEAKER (CENTER)
AC power cord
AC OUTLET
SPEAKER (FRONT)
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—

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