Sharp VC-90ET - Page 18

VC-9OET
CHECKING
THE
FAST
FORWARD
BACK
TENSION
@
Remove
the
cassette
housing
control
assembly.
e@ Checking
Place the unit in the
fast forward mode.
; eee reel disk
eect ie
Place
the
torque
gauge
on
the
supply
reek
disk,
and
turn
it
clockwise
very
slowly (one rotation every 2 to 3 seconds)
and
check
that
the
torque
is
within
15+5 g-cm
Figure 1-33.
Note:
Set
the
torque
gauge
securely
on
the
supply
reel
disk.
If
the
torque
gauge
is
not
securely
set
on
the
reel
disk,
measurement
will
be
incorrect.
CHECKING
THE
REWIND
BACK
TENSION
@
Remove
the
cassette
housing
control
assembly.
@ Checking
Ye)
7 Place the unit in the
rewind made. .
Place the torque gauge on the
take-up reel disk, and turn it
counterclockwise very slowly
(one rotation every 2 to 3
seconds} and check that the
torque is within 15+ 5 g-cm.
Figure 1-34.
Note:
Set the torque gauge securely on the take-up
reeldisk. If it is not secure, the measurement will be
incorrect.
Take-up reel disk
IR
CHECKING
THE
VIDEO
SEARCH
REWIND
BACK
TENSION
@
Remove
the
cassette
housing
control
assembly.
@ Checking
ite,
= -lpLay|- =»
ae
vey
7
Push the play button to place Push the video search rewind
the unit in the playback mode. button to place the unit in the
video search rewind mode.
at
Th
a
Take-up reel disk Gi
wv
mp |vse| mp
“TUN.
Torque gauge
Place the torque gauge on the take-up ree!
disk, and turn it couterclockwise very slowly
fone rotation every 2 to 3 seconds) and check
that the torque is within the set value
45+ 20 9-cm.
Figure 1-35.
Note:
Set the torque gauge securely on the take-up
reeldisk. If it is not secure, the measurement will be
incorrect. ;
CHECKING THE PINCH ROLLER PRESSURE
@ Remove the cassette housing control assembly.
gules
> ow >
<7 TNS
Push the play button to place the
unit in the playback mode.
Tension gauge
1,000-1,200 g
Use a finger.
Pinch roller
Capstan
shalt
Tension
gauge
adap!
er
Figure 1-36.