cec BD-5200 Service Manual page 7

a
if
TROUBLE SHOOTING
1. The tone arm will not automatically return.
Remove the turntable
platter and check to see that the clearance between gear of center shaft and
ratchet is reasonable. (Fig. 15)
No:
Yes:
Loosen three screws which fasten the center shaft, and adjust.
Rotate adjusting screw(Fig. 16) of tone arm fixing plate counter-clockwise.
Rotate adjusting screw
(Fig. 16) of tone arm fixing plate counter-clockwise.
3. The tone arm returns before the end of the performance.
Rotate adjusting screw (Fig.16)of tone arm fixing plate clockwise.
Check to see that the strobo light is ON.
Yes: Check to see that the belt
is in place on the pulley.
No: Check to see that the power |
© 'Yes: Check the fuse. No:
Yes: Check to see that the
motor is rotating.——|_
No: Fit the belt.
plug is securely connected.
No: Connect the plug.
5. The turntable platter will not stop rotating.
Check to see if the turntable will stop rotating when knob of microswitch is sufficiently pushed.
oe
Adjust the clearance between the knob of microswitch and tip of tone arm
fixing plate to 1 mm. (Fig. 16)
No: Check the wiring.
No:
Yes:
No:
Yes:
Replace wiring according to the circuit diagram.
Check the microswitch.
Microswitch defective.
Capacitor defective.
No:
Yes:
No:
Yes:
No:
Yes:
7. Noise from turntable.
Replace wiring according to the wiring diagrams.
Check the variable resister.
Variable resister defective.
Check the rotaly switch.
Rotaly switch defective.
Motor defective.
Check for noise with turntable platter removed.
Yes:
No:
Check motor.
Yes:
No:
Adjust the height of turntable platter.
Turntable shaft is defective.
Yes: Check the turntable bearing.
Check to see that 10+1V is
available from the secondary
of the transformer.
No:
Ok: Check the microswitch.
: Replace the fuse.
@6
: Replace the microswitch,
: Transformer defective.
: Check the leads from the AC
: Motor defective.
: Check to see that proper voltage
is available at the primary of the
transformer.
circuit board to the primary
of the transformer.