Pioneer KE-83ZBM Manual de serviço - Página 41
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Capstan
1.
The
sub-belt
from sub-motor
1
goes through
pulley
gear
"H",
gear
"I",
gear
"J" and
turns
gear
"K".
Head
turning
and head base
positioning
take place using the
"K"
unit
(the projecting
unit)
of
gear
"K"
and
pin
"B". There
is
a
metal brush attached to the
back
of
gear
"K"
which
de-
tects
the passing
through
of
all
patterns
and
common
patterns
and
stops
sub-motor
1.
This
controls the
head
positioning,
the
head
turning,
the contact pressure of the
play
idler
gear
and
the contact pressure of the pinch
roller.
2.
Head
turning
at pin
"B"
takes place
until
gear
"K"
starts
turning
which
brings the
"K"'
part into
contact with the
lever
"B", "B"'
part. (Fig.
16-®)
3.
Pin
"B"
engages
with the
arm "E"
oval
opening
and
rotates
arm
"E".
The arm "E"
sector gear
is
engaged
with
pin
"C"
and
this
turns the
head.
The
head
rotation
pattern
(Fig
.
16-®)
performs
this
operation
inside
a
certain
angle.
4.
When
gear
"K"
turns
it
also
pushes
the
lever
"B", "B"'
part.
The
"B"'
part turns
arm "F" and arm
"G"
counter-
clockwise
and advances head
base
with the
arm "G",
"G"'
part.
(Rg.
16-®,
®)
5.
After
the
head base goes beyond
the
MS
pattern
(Fig.
16-®)
position,
the
arm
"F", "F"'
part
pushes
the
pinch
roller
unit
pinch
spring
and
presses the pinch
roller
down
onto
the capstan.
(Fig.
17)
6.
Simultaneously, the
arm
"F",
"F"
unit
pushes
the
aim
"H",
"H"
part.
The
"H*"
part lock releases
when
pushed,
and
the
play
idler
gear
comes
into
contact with the
reel
unit.
Play operation
begins
because
of
this. (Fig.
16-®,
Fig. 17)
7.
When
going
from
play to
eject,
first,
the pinch
roller
dis-
engages from
the capstan,
and
then using the
pinch
roller
unit
trapezoidal hole, releases
the
idler
arm
from
the
reel
unit
by
means
of
pin
"D'\
After
that,
the
"H*"
unit
again
•
meshes
with the
idler
arm and
the
''play"
idler
gear stops
after
completely disengaging
from
the
reel unit.
7