Read Sony STR-SE581 Service Manual online
STR-SE581
US Model
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
MICROFILM
Manufactured under license from Dolby Laboratories
Licensing Corporation.
“Dolby” “Pro Logic” and the double-D symbol
Licensing Corporation.
“Dolby” “Pro Logic” and the double-D symbol
a
are
trademarks of Dolby Laboratories Licensing
Corporation.
Corporation.
SPECIFICATIONS
— Continued on next page —
Audio power specifications
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 8
Ω
load, both channels driven, from 40 - 20,000 Hz, rated 100 watts per
channel minimum RMS power, with no more than 0.5% total harmonic distortion
from 250 milliwatts to rated output.
from 250 milliwatts to rated output.
Amplifier section
Stereo mode
(8
Ω
at 40 Hz - 20 kHz less than 0.5% total
harmonic distortion)
100 W + 100 W
100 W + 100 W
Surround mode
(8
Ω
at 1 kHz, THD 0.5%)
Front: 100 W/ch
Center: (Pro Logic Mode)
100 W
Rear: 50 W/ch
Center: (Pro Logic Mode)
100 W
Rear: 50 W/ch
5.1/DVD INPUT* mode
(8
Ω
at 1 kHz, THD 0.8%)
Front: 100 W/ch
Center: 100 W
Rear: 50 W/ch
Center: 100 W
Rear: 50 W/ch
Frequency response
PHONO: RIAA
equalization curve ±0.5 dB
TV/DBS, CD, TAPE/MD, VIDEO, 5.1/DVD
INPUT
10 Hz - 50 kHz ±1 dB
equalization curve ±0.5 dB
TV/DBS, CD, TAPE/MD, VIDEO, 5.1/DVD
INPUT
10 Hz - 50 kHz ±1 dB
Inputs
Sensitivity Impedance
S/N (weighting network,
input level)
PHONO
(MM)
2.5 mV
50 Kilohms
72 dB*
(A, 2.5 mV)
CD
400 mV
TAPE/MD,
250 mV
82 dB*
TV/DBS,
50 Kilohms
(A, 150 mV)
VIDEO, 5.1/
DVD INPUT*
*78 IHF
Outputs
TAPE/MD REC OUT:
Voltage: 150 mV,
Impedance: 10 k
Impedance: 10 k
Ω
VIDEO AUDIO OUT:
Voltage: 150 mV,
Impedance: 10 k
Impedance: 10 k
Ω
WOOFER:
Voltage: 2 V,
Impedance:
Impedance:
±
10 k
Ω
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 tuner section
Tuning range
87.5 - 108.0 MHz
Antenna terminals
75 ohms, unbalanced
300 ohms, balanced
300 ohms, balanced
Sensitivity
Mono: 18.3 dBf, 4.5
µ
V
Stereo: 38.3 dBf, 45
µ
V
Usable sensitivity
11.2 dBf, 2
µ
V (IHF)
S/N
Mono: 76 dB
Stereo: 70 dB
Stereo: 70 dB
Harmonic distortion at 1 kHz
Mono: 0.3%
Stereo: 0.59%
Stereo: 0.59%
Separation
45 dB at 1 kHz
+0.5
Frequency response
30 Hz – 15 kHz
–2
dB
Selectivity
60 dB at 400 kHz
AM tuner section
Tuning range
531 – 1710 kHz
Antenna
Loop antenna
Usable sensitivity
50 dB/m (at 1,000 kHz)
S/N
54 dB (at 50 mV/m)
— 2 —
1.
GENERAL
································································
3
2.
TEST MODE
····························································
5
3.
DIAGRAMS
3-1.
Circuit Boards Location ····················································· 6
3-2.
Printed Wiring Board – Display Section – ························ 7
3-3.
Schematic Diagram – Display Section – ··························· 9
3-4.
Printed Wiring Board – Volume/Video Section – ············ 11
3-5.
Schematic Diagram – Volume/Video Section – ·············· 13
3-6.
Printed Wiring Board – Main Section – ·························· 15
3-7.
Schematic Diagram – Main Section (1/3) – ···················· 17
3-8.
Printed Wiring Board – SP-SW, Power Section – ··········· 19
3-9.
Schematic Diagram – Main Section (2/3), SP-SW – ······ 21
3-10. Schematic Diagram – Main Section (3/3), Power – ········ 23
3-11. IC Pin Function ································································ 25
3-12. IC Block Diagrams ··························································· 27
3-11. IC Pin Function ································································ 25
3-12. IC Block Diagrams ··························································· 27
4.
EXPLODED VIEWS
4-1.
Front Panel Section ·························································· 29
4-2.
Chassis Section ································································· 30
5.
ELECTRICAL PARTS LIST
································
31
TABLE OF CONTENTS
Harmonic distortion
0.5% (50 mV/m, 400 kHz)
Selectivity
At 10 kHz: 40 dB
General
System
Tuner section:
PLL quartz-locked digital synthesizer system
Preamplifier section:
Low-noise NF type equalizer
Power amplifier section:
Pure-complementary SEPP
PLL quartz-locked digital synthesizer system
Preamplifier section:
Low-noise NF type equalizer
Power amplifier section:
Pure-complementary SEPP
Power requirements
120 V AC, 60 Hz
Power consumption
230 W
AC outlets
2 switched, total 120 W/1A Max
Dimensions
17
×
5
7
/
8
×
11
5
/
8
inches
(430
×
145
×
295 mm)
Mass (Approx.)
16 IB 15 oz (7.7 kg)
Supplied accessories
FM wire antenna (1)
AM loop antenna (1)
Remote controller (remote) (1)
Size AA (R6) batteries (2)
AM loop antenna (1)
Remote controller (remote) (1)
Size AA (R6) batteries (2)
Design and specifications are subject to change without notice.
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.
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
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.
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.
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 microampers).
Leakage current can be measured by any one of three methods.
and from all exposed metal parts to any exposed metal part having
a return to chassis, must not exceed 0.5 mA (500 microampers).
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.
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.
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” 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)
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)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µ
F
1.5 k
Ω
AC
Voltmeter
(0.75 V)
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
— 3 —
SECTION 1
GENERAL
LOCATION AND FUNCTION OF CONTROLS
[FRONT PANEL]
1
POWER switch (I/
u
)
2
CENTER LEVEL +, – buttons
3
PRO LOGIC indicator
4
C. STUDIO indicator
5
HALL indicator
6
MASTER VOLUME control
7
BALANCE control
8
TREBLE control
9
BASS control
0
BASS BOOST button/indicator
!¡
SURROUND ON/OFF button
!™
MODE button
!£
SET UP button
!¢
EFECT/DELAY TIME button
!∞
5.1/DVD INPUT button
!§
TAPE/MD FUNCTION button
!¶
TV/DBS FUNCTION button
!•
VIDEO FUNCTION button
!ª
PHONO FUNCTION button
@º
TUNER FUNCTION button
@¡
CD FUNCTION button
@™
DIRECT button
@£
SHIFT button
@¢
Numeric buttons
@∞
PRESET TUNING +, – buttons
@§
MEMORY button
@¶
AM button
@•
FM button
@ª
FM MODE button
#º
TUNING +, – buttons
#¡
PHONES jack
#™
SPEAKERS A/B buttons
#£
REAR LEVEL +, – buttons
1
2 #£ 3 4 5
!• !¶ !§
!¢ !£
6
@§
@•
#º
#™
#¡
7
8
!¡
!∞ !™
@º !ª
@¡
@™
@£
@¢
@∞
@¶
@ª
9
!º
— 4 —
[REAR PANEL]
1
SIGNAL GND
2
5.1/DVD INPUT (FRONT/REAR)
3
WOOFER
4
ANTENNA (AM/FM)
5
PHONO
6
CD
7
TAPE/MD
8
TV/DBS
9
VIDEO
0
SURROUND SPEAKERS (REAR)
!¡
FRONT SPEAKERS
!™
AC OUTLET
!£
AC power code
!¢
5.1/DVD INPUT (CENTER)
!∞
5.1/DVD INPUT (WOOFER)
!§
SURROUND SPEAKERS (CENTER)
1 2 !¢
!∞
3
!™
4 5
6
7 8 9
0 !§
!¡
!£