Sharp VC-MH80 Service Manual page 15

l Check that the reel disk is lower than par-t A but
higher than part B; If~the height is not correct,
readjust the reel disk height by changing the
poly-slider washer under the reel disk.
Note :
Whenever replacing the-reel disk, perform the
height checking and adjustment.
Master plane]
Figure 4-7.
CHECKING AND ADJUSTMENT OFTAKE-UP
TORQUE IN FAST FORWARD MODE
l Remove the cassette
Make a short-circuit between TP5001 and
turn on the power.
Setting
1.
Set a torque gauge to zero on the scale. Place it
on the take-up reel disk.
2.
Press the FF button to set the mechanism to the
fast forward mode.
Checking
Turn the torque gauge slowly (one rotation
every 2 to 3 seconds) by hand in the take-up
direction.
2.
Check to see if the take-up torque is higher than
69 mN-m (70Qgf-cm).
Torque gauge
or more
Figure 4-6.
, ,' ,
assembly.
housing control
I
I
I its maximum value.
(Red mark)
Take-up direction
Adjustment
l
1. If the take-up torque is outside the range, clean
the capstan D.D. motor pulley, reel belt and reel
pulley with cleaning liquid, then recheck the
torque.
2. If the take-up torque is still out of range, replace
the reel belt.
Notes:
1. Hold down the torque gauge so that it may not
fly off.
2. When checking the take-up torque, do not keep
the reel disk locked for a longer time.
CHECKING AND ADJUSTMENT OF TAKE-UP
TORQUE IN REWIND MODE
Remove the cassette housing control assembly.
l
Make a short-circuit-between TP5001 and j
l
TP5002,
both located on the timer
turn on the power.
1. Set a torque gauge to zero on the scale. Place it
on the supply reel disk.
2. Press the REW button to set the mechanism to '
the rewind mode.
l Checking
every 2 to 3 seconds) by hand in the take-up
direction.
2. Check to see if the take-up torque is higher than
69 mN-m (700 gf-cm).
Torqueg a u
15
VC-MH80
PWB. Now
its maximum value.
Figure 4-9.