Slit Image Adjustment; Soundhead Maintenance - Siemens 2000 Service Manual

Slit image adjustment
The light beam (slit image) projected by
the optical sound reproduction system can
be shifted to the left or right by means o1
the setscrew 45. The slit image is factory-
adjusted, and this position is marked by a
red dot. Adjustment of the slit image be-
,,.·comes necessary only when the optical
sound track is laterally displaced owing to
faulty printing, which happens only very
rarely.
6
Soundhead maintenance
Frequently clean the sound head unit, and
above all the magnetic heads, with a fine
hairbrush to remove dust particles deposit-
ed by the film. Preferably, this should be
done each time before using the projector.
To expose the sound head, pull off the
protective cap 58 (Fig . 4) to the front. From
time to time remove abrasive particles of
magnetic coating from the magnetic heads
with a small leather-covered wooden stick.
This tool is part of the Siemens servicing
kit. Never touch the magnetic heads with
screwdrivers or other metallic objects. lt is
also advisable to make sure before a film
projection that brake roller and ftlter roller
are not jammed.
F1g 6 Sound hea d un1t o p en