Sansui AU-X301 Service Manual

AU-X201/X301
SERVICE
MANUAL
SPECIFICATIONS
<AU-X20t>
Power
output
Min. RMS,
both channels driven^
from 20
to
20,000
Hz,
with
no
more than
0,05%
total harmonic
distortion.
30
watts
per channejdnto
1 kHz, 8
ohms.
Frequency
response {at
t
watt)
Overalbifrom
CD).
kto
100,000
Hz, +0
dB
™3dB
Signal
to
noise ratio
{short-circuit,
A-network)
PHONO
{MM)
75 d8
CD,
TUNER,
LINE
105
dB
TAPE
PLAY-1,
2
;
105 dB
Power
consumption
150 watts
250
watts
Maxirnum
Weight
7.0
kg
(15.4
IbsL net
<AU.X301>
Power
output
Min.
RMS, both
channels
driven,
from
20
to 20,000
Hz, with
no more
than
0.05%
total
harmonic
distortion.
65 watts
per
channel
into 1
kHz,
8 ohms.
Frequency
response {at
1
watt)
Overall
(from CD)
1
to 150,000
Hz,
+0
dB
-3
dB
Signal
to noise
ratio
(short-circuit,
A-network)
PHONO
(MC)....
65
dB
PHONO
(MM)
80
dB
CD, TUNER,
LINE 105
dB
TAPE PLAY-k 2
105
dB
Power consumption
330
watts 410 VA
Rated
460
watts
Maximum
Weight
9.5
kg
(20.9
lbs) net
1
1 ,0
kg
(24.3
lbs)
packed
<
AU-X201/301
>
Load
impedance
4 to
16
ohms
Total
harmonic
distortion less
than 0.05% at
or
below rated min.
RMS
power
output
tntermodufation
distortion
(60
)Hz: 7 kHz
==4:1
5MPTE
method)
less than
0.05%
at
rated
power output
RIAA curve
deviation
(PHONO-MM,
20 Hz
to
20
kHz)
+0.5 dB,
^0.5
dB
Input
sensitivity and
impedance (at
1
kHz)
PHONO
(MC).... 420
^V/100
or 22
ohms
(AU-
X301
only)
PHONO
(MM)
3.5 mV/47
kohms
(Max.
input capability:
150
mV
at 1
kHz.fess
than
0.1%
total harmonic
distortion)
CD,
TUNER,
LINE
200 mV/47
kohms
TAPE
PLAY-1,
2
200
mV/47 kohms
Output
level
(at
1
kHz)
TAPE
REC-1,
2
200 mV Into
47
kohms
Controls
and
Filter
BASS...
iOdB at
50
Hz
TREBLE
db8 d8
at
10 kHz
SUBSONIC......
-3
dB at
16
Hz
(6
dB/oct)c
LOUDNESS
+8 dB at
50
Hz
(VOLUME:
--30
dB
position)::
+4
dB
at 10 kHz
Power
requirements
AC
120V/220V/240V,
50/60
Hz
For
U.S.A.
Sc Canada
..
AC
120V, 60
Hz
Dimensions..
448
mm
(17-11/16'")
W
136 mm
(5-3/80
H
311
mm
(12-1/4
"kD
INTEGRATED
AMPLIFIER
CAUTION
1. Parts
identified by the
A
symbol on
the
schematic
diagram
and the
parts
list
are critical
for
safety.
Use
only
replacement
parts
that have
critical
charac-
teristics
recommended
by the
manufacturer.
2.
Make
leakage-current
or resistance
measurements
to
determine that
exposed
parts
are
acceptably
in-
sulated
from
the
supply
circuit
before returning
the
appliance to
the
customer.
Design and
specifications
subject
to
chiinges
without
notice
for
im-
provements.
Due to
local
laws
and
regutatfons,
this
unit sold
In some areas
are not
equipped with
variable voltage
sdedtors.

Sansui AU-X301 Specifications

General

Brand	Sansui
Model	AU-X301
Category	Amplifier
Language	English

Summary

Amplifier Specifications

AU-X201 Model Specifications

Detailed electrical and performance specifications for the AU-X201.

AU-X301 Model Specifications

Detailed electrical and performance specifications for the AU-X301.

General Amplifier Specifications

Common specifications applicable to both AU-X201 and AU-X301 models.

Critical Safety Cautions

Replacement Parts for Safety

Guidance on using critical replacement parts for safety compliance.

Leakage Current Testing

Procedure for measuring leakage current before returning unit to customer.

Block Diagram

Audio Signal Path and Sections

Visual representation of signal paths and functional blocks within the amplifier.

Electric Parts Lists (Boards 1-4)

Power Amp. Board Parts

List of electronic components for the power amplifier board.

Adjustment Procedures

Bias Current Adjustment Steps

Step-by-step guide for adjusting the amplifier's bias current.

Schematic Diagrams

AU-X201 Main Section Schematic

Detailed schematic for the main audio processing sections of the AU-X201.

AU-X301 Main Section Schematic

Detailed schematic for the main audio processing sections of the AU-X301.

Power Supply Schematics by Region

AU-X201 Power Supply Circuit Variations

Schematics for the AU-X201 power supply for different regional models.

AU-X301 Power Supply Circuit Variations

Schematics for the AU-X301 power supply for different regional models.