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Teac MT-20D-IO - Page 149

Teac MT-20D-IO
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"30
ips"
(3)
Check
and
adjustment
procedures
(a)
Connect
SOA
in
accordance
with
Item
4-2-5,
and
set
the
POWER
switch
to
the
PSA
side
(it
is
not
required
to
connect
a
check
cable
C).
(b)
Load
the
speed
tape
on
MTU.
(c)
Wind
the
tape
nearly
in
the
winding
center.
(d)
Key
in
"B4".
The
tape
is
wound
forward
and
reversely.
(e)
The 30
ips
for
ward
tape
speed
is
indicated
to
the
display
DATA
1
of
SOA,
and
the
30
ips
reverse
tape
speed
to
the
DATA
2
in
ips
(inch
per
second)
units.
(f)
Check
if
both
the
tape
speeds
are
within
the
range
of
30
ips
-4%
to
+4%
(28.8
ips
to
31.2
ips).
(g)
Key
in
"8".
The
indicator
HIS
on
SOA
goes
out
(high
speed
mode).
(h)
Key
in
"BA". The
tape
is
wound
forward
and
reversely
at
90
ips.
(i)
The
forward
winding
encoder
frequency
is
displayed
to
the
display
DATA
1
on
SOA,
and
the
reverse
one
to
the
DATA
2.
(j)
Check
if
each
encoder
frquency
is
within
the
range
of
8.594
kHz
-5%
to
+5%
(8.14
kHz
to
9.024
kHz).
(k)
If
the
results
of
checks
at
steps
(e)
and
(i)
are
out
of
the
specifications,
make
the
following
adjustment.
(1)
Key
in
"E3".
The
indicator
REPEAT
on
SOA
lights
up.
(m)
Key
in
"BA". The
tape
is
wound
forward
and
reversely
at
90
ips.
(n)
The
forward
winding
encoder
frequency
is
indicated
to
the
display
DATA
1 on
SOA,
and
the
reverse
one
to
DATA
2 (90
ips
movement).
(0)
Adjust
R44
on
the
PCBA
Drive
Control
until
both
the
encoder
frequencies
are
within
8.58
kHz
to
8.60
kHz
(center
value:
8.594
kHz).
(p)
Key
in
"F"
to
stop
the
operation.
(q)
Key
in
"8".
The
indicator
HIS on
SOA
goes
out
(low
speed
mode).
(r)
Key
in
"BAli. The
tape
is
wound
forward
and
reversely
at
30
ips.
(s)
The
forward
winding
encoder
frequency
is
indicated
to
the
DATA
1
display
on
SOA,
and
the
reverse
one
to
the
DATA
2.
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