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Teac MT-20D-IO - Page 32

Teac MT-20D-IO
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voltage
drop
occurs.
The
power
ON
reset
outputs
a
POWER
ON
RESET
signal
of
approx.
50
ms
during
power
ON
time.
The
ready
detects
the
POWER
ON
RESET
signal
and
the
loading
of
a
cassette
tape,
and
outputs
the
ROY
signal
and
ACK
signal.
The
hole
sensor
converts
the
output
signal
of
the
phototransistor
for
the
hole
sensor
into
a
pulse
signal
and
outputs
it.
The
file
protect
sensor
converts
the
output
signal
of
the
photo
interrupter
for
detecting
the
write
protect
hole
into
a
pulse
signal
and
oututs
it.
The
solenoid
driver
feeds
the
drive
current
to
the
head
shift
solenoid
when
track
1
and
track
2
are
selected.
The
solenoid
driver
drives
that
solenoid
for
200
ms
by
the
power
supply
of
12
V
to
attract
it,
and
after
that,
holds
it
by
the
power
supply
of
5 V.
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320
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