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Sansui 2000X - Current Adjustment; Output Adjustment

Sansui 2000X
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STEP
SETTING
OF
AMMETER
(TESTER)
100mA
range.
100mA
range.
WAHT
TO DO
Remove
F
9;
and
Foe
Set
VReoz
and
VReo4
to
minimum.
Set
VRioe
and
VRuiog
(VOLUME)
to
mini-
mum.
Push
the
switch
ON.
POWER
Connect
the
ammeter
to
Feo;
as
illustrated
in
Fig.
1.
Turn
VRgo,
_
clock-
wise
and
adjust
cur-
rent
to
15
to
l0mA
at
room
temperature
of
25°C
or
less
or
to
20
to
15mA
at
25°C
or
more.
|
Push
the
POWER
|
switch
OFF
and
at-
tach
Fo;
in
place.
Push
the
POWER
switch
ON
and
con-
nect
the
ammeter
to
Foz
as
illustrated
in
Fig.
1.
Turn
VRgoz
clock-
wise
and
adjust
cur-
rent
to
15to10mA
at
25°C
or
less
or
to
20
to
15mA
at
25°C
or
more.
Attach
Fgoe
in
place.
1.
CURRENT
ADJUSTMENT
NOTE
Use
an
am-
meter
having
100
or
50mA
range.
Be
sure
to
switch
on
lst
and
then
con-
nect
the
am-
meter.
Feoi
TO
AMMETER
AMMETER
more
than
100mA
range
BACK
PANEL
<Fig,
>
QUICK-ACTING
FUSE
HOLDER
STEP
A
4a
Ss
WHAT
TO
DO
Adjust
the
volume
control
to
minimum.
Set
an
oscillator
to
1,000Hz
and
connect
it
to
the
LEFT
AUX
|
input.
Set
the
SELECTOR
switch
to
AUX.
Connect
a
8
or
16-
ohm
load
resistor
hav-
ing
capacitor
of
more
than
50
watts
to
the
LEFT
SPEAKER
output.
Connect
an
oscillo-
scope
to
the
SPEAK-
ER
terminal.
Push
the
POWER
switch
on
and
ad-
vance
the
volume
little
by
little.
Check
the
output
at
the
terminal
by
means
of
the
oscilloscope.
Adjust
VRgo;
so
that
the
fronts
of
sine
wave
are
clipped
sim-
ultaneously
Adjust
the
right
chan-
nel
as
above.
In
Step
7,
adjust
VRaps.
2.
OUTPUT
ADJUSTMENT
NOTE
The
oscillator
used
should
have
the
oscil-
lation
frequency
of
20
to
20,000Hz
and
the
output
voltage
of
more
than
200mV.
Set
other
controls
and
switches
as
follows:
BALANCE
to
CENTER
TAPE
MON.to
OFF
MODE
to
STEREO
TONE
to
CENTER
Others
to
OFF

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