JVC RC-828L Service Manual page 12

No. 1344
RC-828L/LB
Adjustment of Cassette Mechanism
TIMING OF MAIN SWITCH & BRAKING (Refer
to Fig. 30)
1. Check to see that the main switch turns on after the
brake of take-up and supply disks has been released, if
the PLAY, CUE or REVIEW button is gradually pressed.
2. If the timing is out of order, check that the clearance
(D) between the brake lever and the projection of push
button cam is approximately 0.2mm, in the stop mode.
If the clearance is less than 0.2mm, bend the part (1) of
brake lever to the (A) direction.
Bend the part (2) of brake lever to (B) or (C) direction
so that the brake lever contacts slightly with the
actuator of main switch to adjust the timing of main
switch.
After adjustment check that the main switch turns off
in the stop mode.
3. If the brake-does not actuate optimumly, bend the part
(3) of stop arm to (F) direction.
Actuator
Clearance
Main
Switch
Brake Lever
Projection
Push Button Cam
Clearance ©)
Fig. 30
THRUST OF FLYWHEEL (Refer to Fig. 31)
The clearance between the top of flywheel shaft and the
thrust screw should be within 0.2 to 0.4mm. If the
clearance is out of limit, adjust the thrust screw for normal
value.
Note: After adjustment fix the thrust screw with lock
adhesive.
Thrust Screw
a
ee
0.2~0.4 mm
Fig. 31
recording, F.F. and rewinding.
lever
2. In the recording mode, if the kick lever does not return to
its original position, though the stop mechanism has
functioned normally, bend the part (1) of kick lever to
the (B) direction.
3. If the mechanism stops automatically while the tape is
running or does not stop when the tape stops, change
the shut-off assembly.
Note: If the part (1) is excessively bended to the (A)
direction the release lever inside the shut-off
assembly may not return its normal position.