ARRI ARRIFLEX 235 - Manual (Page 157)

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Problem Cause Remedy
Scratches on the emulsion side of the negative
In the image area,
Dirty or damaged cross bars Clean or, if defective, replace the film gate
over several frames on the film gate
In the image area, Upper or lower film loop too long, Check the position of the upper loop
short and periodically recurring film touches inside of camera housing in relation to the marking
(above and below) Check the loop length of the magazine
Outside the image area Dirty or damaged longitudinal bars Carefully clean film gate and magazine throat
on the film gate or,
or film running surfaces in the magazine throat if defective, replace
Scratches on the glossy side of the negative
In the image area
Dirty or damaged film track Clean film track (movement) and spacer gate or,
or spacer gate if defective, replace
Outside the image area Dirty or damaged longitidinal bars Carefully clean longitudinal bars and
on the film track magazine throat or, if defective, replace
or film running surfaces in the magazine throat
Scratching in general Strong tendency of raw film stock to build up Complain to the manufacturer of the film stock,
emulsion, dust on raw stock from perforation use different film stock
process, extreme temperatures,
scratched raw stock
Appendix