FP 25/30/50 D / FP 10/20/3050 A
Issue: 04/2011
52
5 .4 .4 Analog Sound
Error
Cause
Solution
No sound / some
channels missing
- sound processor failure
- amplifier failure
- speaker failure
- sound device is defective
- check plugs and power; call service
- check if sound track is threaded on
the correct side
- check / replace exciter lamp
(standard sound) or red LEDs (rev.
scan sound)
- check all equipment for blown
fuses / tripped circuit breakers
Sound out of sync
with picture
- lower loop wrong size
- wrong threading path
- thread correctly
- thread correctly
Loss of high fre-
quencies
- dirty sound optics
- sound optics focused poorly
- clean with lens cleaner and Q-tip
- adjust sound optics’ focus (service)
Garbled sound
- scanning drum jammed
- sound pressure roller loose
- remove blockage; change or oil
bearings
- adjust tension (service)
Hissing sounds
- scratches on sound track
- dirt on sound track
- defective sound electronics
- replace print
- clean
- check and replace (service)
5 .4 .5 Digital Sound
Error
Cause
Solution
No sound
- check the following [also see
the “no sound / some
channels missing” section of
“Analog Sound”, above.]
- use film for digital playback
- switch on digital sound processor
- switch correct processor mode
- load disk loaded correctly and check
the right disk is in place [DTS only]
- thread film correctly
Sound out of sync
with picture
- loops wrong size
- wrong threading path
- thread correctly
- thread correctly
Poor digital sound - improper tension
- dirt on lens
- dirt on digital sound track
- scratches on digital track
- re-thread
- remove dust using compressed air
- clean digital soundtrack
- replace print
