Sharp GF-6060H - Play, Fast Forward; Mechanism Adjustment

MECHANISM ADJUSTMENT
@ TORQUE CHECK AT PLAY, FAST FORWARD AND
REWIND MODES (Refer to Figure 8—1)
. Set a torque measuring reel to the turntable (to the take-up
side at play or fast forward mode and to the supply side at
rewind mode).
Then, gradually weaken a force of the tension gauge and
read the torque value when the rotation speed of the
turntable becomes nearly constant.
. The torque values in each mode are as specified below.
Mode Torque value
Play 35 ~60 gram. cm
Fast forward 70 ~100 gram. cm
=a
3h
Rewind 70 ~ 100 gram. cm
PLUNGER POSITIONAL ADJUSTMENT
(Refer to Figure 8—2)
. Loosen the screws retaining the plunger.
. While depressing the core into the plunger, push the key.
In this time, adjust the plunger position so that the pin on
the Rewind/Reverse APSS lever touches the (@) part
of the APSS lock lever.
After adjustment, retighten the screws.
@ PRESSURE ROLLER PRESSURE ADJUSTMENT
pany
(Refer to Figure 8—3)
. Place this unit in playback mode.
Use a tension gauge (500 grams) to press it to the specified
position of the pressure roller to make the pressure roller
apart from the capstan (at the time, the pressure roller
stops to rotate). Then, gradually weaken a force of the
tension gauge and read the value when the pressure roller
begins to rotate. Make sure that the reading of tension
gauge is 290 to 400 grams.
If the value is not satisfied, adjust it by bending the
pressure roller spring or replace the spring with a new
one.
Notes:
In playback mode, make sure there is a gap of more than
0.1mm between the pressure roller lever and the sub-
chassis.
Turniable
Torque measuring
reel
Figure 8-1
20% (25/32'')
Tension gauge
@® part Plunger solenoid
Rewind key
Figure 8—2
Capstan
Pressure roller
Capstan
Pressure roller
Pressing spring
Figure 8-3
Pressure
roller
More than
O.|mm