Specifications

10-14
Symptom Probable Cause Recommended Action
There is distortion when you play non-
sync sound, but sound from the film is not
distorted.
The non-sync source is introducing distortion.
Defective Cat. No. 681 board
Change the non-sync selection in case the track being
played is distorted. If you have control of the output level of
the device (cassette deck, CD player, etc.), it will be useful
to turn down its volume especially if you have to operate
the non-sync with the fader a long way below 7. If this does
not help, try a different device. If the distortion goes away,
you have found the problem. If changing both the device
and the selection does not eliminate the distortion, the
problem is in the CP500, probably on the Cat. No. 681.
Call service engineer.
Non-sync sound is heard in other formats The non-sync source is set for too high an output level or
there is a balanced / unbalanced wiring problem.
Turn down non-sync source level if possible and call
service engineer. If turning the non-sync source down
doesn’t correct the problem, turn it off if possible during the
show.
Sound from a mono film is distorted as is
sound from the center channel of a stereo
film.
Malfunctioning power amplifier.
Malfunctioning loudspeaker.
Interchange power amplifiers to determine if distortion is
still present.
Interchange speakers to determine if distortion is still
present.