JVC RC-550L User Manual

No. 1384
RC-550L/LB
Playback Torque
1, The playback torque should be within 40 to 70g-cm.
2. If the torque is less than 40g-cm, set the clutch spring to
the 3 position. If it exceeds 70g-cm, set the clutch spring
to the 1 position.
Note: Before adjusting the torque wipe off the surface
of rubber parts and rotating parts, if the torque is
not sufficient.
Clutch Spring Plate
Clutch Pulley
Fig. 30
Adjustment of F.F. & Rewind Torque
1. Fast Forward Torque
In the fast forward mode, check that the F.F. torque is
within 60 to 150g-cm by applying the torque gauge to the
take-up reel disk.
a. If the torque is less than 60g-cm, adjust as follows.
1) If the rotation of F.F. idler which is contacted with
the flywheel stops or fluctuates when the take-up ree!
disk is stopped turning by the fingers, bend the part
A of F.F. button lever to the C-direction.
2) If the F.F. idler contacted with the flywheel is
turning constantly when the take-up reel disk is
stopped turning, turn the three-flap clutch spring
plate clockwise (432-1) to obtain the proper tor-
que.
b. If the torque is over 150g-cm, turn the clutch spring
plate counterclockwise (1>2->3->4) to obtain the proper
torque.
2. Rewind Torque
In the rewind mode, check that the rewind torque is within
60 to 150g-cm by applying the torque gauge to the supply
reel disk,
If the torque is out of standard, adjust it as same method as
items a, & b. of “Fast Forward Torque”.
Rewind Button
FF Button
+1 <Q) Lever
“4
Flywheel
F.F. Idler
Clutch
Spring
Plate
Fig. 31
Memory Facility
If the Memory facility is defective, treat as follows.
a. If the switch assembled in the tape counter is defective,
change the counter.
b. If the counter does not turn:
1) Check the counter belt. If it is defective, change it.
2) Change the counter, if it is defective.
c. The memory switch mounted on the counter may be
defective in contact. If it is change the switch.
d. The connecting wires may be open circuited.
e. The auto stop mechanism may be defective. Refer to the
“Auto Stop Mechanism”.
~10—

JVC RC-550L Specifications

General

Brand	JVC
Model	RC-550L
Category	Cassette Player
Language	English