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Teac C-1 User Manual

Teac C-1
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TAPE
TRANSPORT
SECTION
2-4
PLAY
AND
PAUSE
(1)
Play
In
the
PLAY
mode,
a
high
level
signal
is
output
from
pin
17
of
the
SYS-CON.
The
brake
solenoid
operates
with
the
current
in
route
(1),
and
releases
the
brake.
Then
Q523
turns
on
and
the
base
current
(in
the
route
(2)
of
Q511
stops
and
thus
Q511
turns
off.
While
Q511
is
being
turned
on,
the
tape
end
detection
circuit
is
inhibited,
but
it
is
set
in
the
standby
condition
when
Q511
turns
off.
(Refer
to
the
paragraph
2.7
for
the
tape
end
detection
circuit).
The
current
in
the
route
(3)
turns
on
Q522
and
Q531,
and
actuates
the
head
solenoid.
When
Q522
turns
on,
Q526
tuns
off
after
about
150
milliseconds
and
operates
the
pinch
solenoid
drive
circuit.
With
Q526
turned
off,
Q527
and
Q533
turn
on.
With
Q533
turned
on,
the
pinch
solenoid
operates
and
at
the
same
time
a
low
level
signal
is
sent
to
the
reel
motor
control
PCB.
This
signal
operates
the
reel
motor
control
circuit
so
that
the
current
necessary
for
play
operation
is
supplied
to
the
reel
motors.
(Refer
to
the
Section
4)
With
Q526
turned
off,
Q528
turns
on
and
sends
a
low
level
signal
to
the
OSC
PCB
of
the
amplifier
section.
This
signal
resets
the
muting
of
the
playback
amplifier.
R5952-R597
LOW
MUTE
OF
F,
RSS6N
R6O!I
1Q528
(2)
Pause
In
the
PAUSE
mode,
a
high
level
signal
is
output
from
pin
18
of
the
SYS-CON.
This
signal
operates
as
follows
and
sets
the
deck
in
the
PAUSE
mode.
Route
(4):
Turns
on
Q511
and
inhibits
the
tape
end
detec-
tion
circuit.
Route
(5):
Operates
(or
holds)
the
brake
solenoid.
Route
(6):
Operates
the
head
solenoid.
Route
(7):
Turns
on
Q526
and
inhibits
the
pinch
solenoid
circuit.
Stops
the
reel
motor
control
signal
at
the
same
time.
Further,
turns
off
Q528
and
sends
a
high
level
muting
signal
to
the
playback
amplifier.
Route
(8):
Tums
on
Q502
and
lights
the
PAUSE
indicator.
In
the
PAUSE
mode,
the
current
in
route
(9)
operates
the
reel
motor
control
circuit
which
supplies
weak
current
to
the
right
and
left
reel
motors
to
pull
in
the
slack
in
the
BRAKE_SOL,
R600
Q526
PLAY
MUTE]
R599
({
i)
(in
MUTE
ON
Vhs
tape.
(Refer
to
the
Section
4,
(3))
TAPE
END
DETECTING
CIRCUIT
DRIVER
TO
REEL
MOTOR
CONTROL
PCBR3
TO
REEL
MOTOR
CONTROL
PCB*IO
eno
tee
ia,
4 7
|
R598
ey
Ss
(~)a533
|
peor
jane
R604:
NaS
‘
+24V
Le
a
ee
a
+10V
D632
T-1298
Fig.
12
Play
and
Pause
Circuit
11

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Teac C-1 Specifications

General IconGeneral
BrandTeac
ModelC-1
CategoryCassette Player
LanguageEnglish

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