Pinch Roller - Pioneer T-6600/F Service Manual

PINCH ROLLER
PRESSURE
ADJUSTMENT
1) Prepare
a
hexagonal
wrench
(40\
and
a
Philips @screwdriver (med ium
size ).
2)
Set
the FUNCITON
LEVER to
the
"PLAY"
position. After
loosening the screw @ com-
pletely, control the
adjusting screw C
so
that the pinch roller
contacts
the
capstan
uniformly. Then,
lock the position of
the
pinch
roller with
the screw
@
(Fig.
7).
3) Position
the pinch roller
shaft at almost the
center
of
the
movable range
with
the
shaft
hole of
the pinch roller
frame.
GUIDE
E
T-8i600
CAPSTAN
c
sET
SCREW
€)
sET scREW
SLI DE
Fig.7
Fig.8
5)
Change
the direction
of
the
tape
traveling
several
times
until
there
is no
variation
noticed in the height of the
tape.
Note:
Even a
slight
inclination of the
tape
guide
pole
will
cause
a
large
varia-
tion in the
level
of
the tape. Make
an
adjustment
very
carefully,
TAPE
POLE
t
PINCH
ROLLE
FRAME
PINCH ROLLER
SHAFT
Fis.
6
ADJUSTMENT HEIGHT LEVEL OF TRAVELING TAPE
The
height level
of
the
tape
traveling
should
not
vary
with
respect
to
the
head
when the tape
is
moving at the normal
speed
in either forward or
reverse direction.
When
the pinch roller
assemb-
ly
has been replaced
or the
contact pressure
of
the pinch roller
has been adjusted,
check
the
height
of
traveling tape
by the following
steps.
1) Run the tape
at a
normal
speed,
7-tl2
ips
(19 cm/s) or
3-314
ips
(9.5
cm/s).
2)
Change
the
directions
of
the
tape traveling
from forward to
reverse
or
vice
versa, and
see
if
the
height
of
the
tape varies
with
respect
to
the head.
3
)
If
any
change
of
the height
is
noticed,
adjust
the
perpendicularity
of
the
tape
guide pole.
4)
Adjustment
of
the height
of
the tape should
be
made
as suggested
in the following
table.
PINCH ROLLER
CAPSTAN
TAPE
GUIDE
POLE
D
I
I
I
_1_
I
Direction of
tape
traveling
Adjustment Adjusting portion
Displacement
of
tape
travel
Forward Tape guide pole
D
Tilt
the pole
frontward
Lower
Tilt
the pole
backward
Rises
Reverse
Tape guide
pole
E
Tilt
the pole
frontward
Lowers
Tilt
the pole
backward
Rises
t7