Sharp VC-H92HM Serviceanleitung Seite 17

Check that the reel disk is lower than part 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.
Reel disk height
L
pees Ser!
10+0.2mm | | Reel disk | y Mechanism chassis
Vel ypye
AU/B
Reel disk
Figure 4-7.
CHECKING AND ADJUSTMENT OF TAKE-UP
TORQUE IN FAST FORWARD MODE
Remove the cassette housing control assembly.
Make a short-circuit between TP5001 (or jumper
pin 241) and TP5002 (or jumper pin 242) , both
located at the left on your side on the main PWB,
with a 22 ohm resistor. Now turn on the power.
Setting
. Set a torque gauge to zero on the scale. Place it
on the take-up reel disk.
. 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.
. Check to see if the take-up torque is higher than
69 mN-m (700 gf-cm).
Torque gauge
N
69mMN-m (700gf-cm)
or more
(Red mark)
Take-up direction
Figure 4-8.
The gauge is held at
its maximum value.
@ Adjustment
Notes:
® Setting
@ Checking
Torque gauge
69mMN-m (700gf-cm)
or more
The gauge is held at
its maximum value.
(Red mark)
Figure 4-9.