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Teac MT-20D-IO - Page 91

Teac MT-20D-IO
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3-7-3
Functions
of
straps
The
PCBA
drive
control
and
PCBA
interface
control
are
provided
with
straps
to
change
over
the
MTU
functions.
or
make
adjustment
and
check.
(1)
Sl
(changeover
of
read
amplifier
gain)
PCBA
Drive
Control
Strap
for
changing
over
the
gain
of
the
read
amplifier.
The
read
amplifier
is
set
to
AGC
OFF
status
during
check
and
adjustment
for
head
alignment.
This
strap
is
used
to
prevent
the
gain
of
the
read
amplifier
from
becoming
excessively
high
in
such
a
case.
The
gain
of
the
read
amplifier
is
reduced
by
shorting
Sl.
Normally.
Sl
is
used
in
open
status.
(2)
S2
(AGC
ON/OFF)
PCBA
Drive
Control
"D/CAS"
Strap
for
turning
ON/OFF
the
AGC
of
the
read
amplifier.
When
S2
is
shorted.
AGC
is
turned
ON;
when
opened.
it
is
turned
OFF.
Normally.
S2
is
used
in
shorted
status.
(3)
TP7.
8.
GND
(parity
strap)
PCBA
Interface
Control
For
the
.contents,
refer
to
Item
1-13-2
in
the
specifications.
"SCSI"
(4)
SO.
1.
2
(device
address)
PCBA
Interface
Control
For
the
contents.
refer
to
Item
1-13-3
in
the
specifications.
(5)
S3
(parity
strap)
PCBA
Interface
Control
For
the
contents,
refer
to
Item
1-13-2
in
the
specifications.
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