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Teac MT-20D-IO - Page 116

Teac MT-20D-IO
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"SCSI"
4-2-7
Initialization
of
SOD
The
SOD
(Simulator
aD)
is
a
simulator
to
test
the
overall
}ITU
including
the
PCBA
Interface
Control
This
simulator
permits
the
error
rate,
etc.
to
be
checked
with
HTU
set
to
online
status.
The
PCBA
Interface
Control
can
also
be
adjusted
and
tested
by
connecting
SOD.
Prior
to
the
use
of
SOD,
perform
the
following
initialization.
(1)
Preset
the
output
voltages
of
the
DC
power
supply
to
+12 V
and
+5
V.
(2)
Turn
off
the
DC
power
supply,
and
connect
the
power
cable
to
the
PWR
connector
of
SOD.
(3)
Connect
the
power
cable
to
the
POWER
connector
J2
of
HTU.
(4)
Connect
the
interface
cable
between
the
MT2-ST
IfF
connector
of
SOD
and
J1
of
MTU,
so
that
the
triangular
mark
of
the
connector
is
set
to
the
terminals
1
and
2
side.
(5)
Turn
on
the
DC
power
supply.
(6)
Check
if
the
power
voltage
supplied
to
MTU
is
within
the
range
of
-5%
to
+5%
of
the
rated
voltage,
using
a
digital
voltmeter
(DCV).
Between
TP1S
and
TP18
of
PCBA
Drive
Control:
+12 V
power
voltage
(11.
4
to
12.6
V)
Between
TP16
and
TP18
of
PCBA
Drive
Control:
+5 V
power
voltage
( 4 . 75
to
5.
25
V)
-
4023
-

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