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Technics SE-A900S - Power Supply and Operation Testing; Supplying Power for Standalone Operation; Performing Operation Checks

Technics SE-A900S
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SU-C800U
|
lm
To
Supply
Power
Source
This
unit
SU-C800U
is
designed
to
operate
on
power
supplied
from
the
Power
Amplifier
SE-A900S
or
SE-A800S.
When
operating
the
unit
SU-C800U
alone
for
testing
and
servicing,
without
having
power
supplied
from
the
Power
Amplifier
SE-A900S
or
SE-A800S,
use
the
following
method.
Power
Supply
to
Main
Circuit
4.
Apply
11
V
AC
power
to
the
section
between
the
point
[TP1|and
the
point
[TP2].
2.
Connect
the
DC
+12
V
to
+15
V
(more
than
0.1
A)
to
the
point
[TP5],
and
the
GND
terminal
to
the
point
[TP4|using
the
DC
power
supply.
2.
Connect
the
DC
—12
V
to
-15
V
(more
than
0.1
A)
to
the
point
[TP3],
and
the
GND
terminal
to
the
point
|TP4|using
the
DC
power
supply.
Operation
Check
1.Input
a
signal
(1
KHz,
100
mV)
to
the
each
line-in
terminal.
3.Connect
the
oscilloscope
or
the
speaker
with
the
built-in
amplifier
to
the
PRE
OUT
terminals
and
check
if
the
signals
are
outputting
from
this
unit.
DC
power
supply
(+DC12
V
to
+15
V:
more
than
0.1
A)
TAPE
1
PLAY
(IN)
AG AC
DG
TAPE
2/DCC
PLAY
(IN)
QV
16
12V
AUX
CD
i
|"
TUNER
ACIIV
fea
aK601
Nine
PRE
OUT
Terminals
(Main
P.C.B.)
Fig.
1

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