Bell and Howell 1598, User Manual

Page: 17 / 38

P a n chromatic TQIII & TQIII Specialist User Manual
Page
17
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Problem
Film enters projector but loop then rises as shown.
Cause
Damaged leader.
Remedy
Reverse projector to remove film trim off damaged portion. Repeat from Stage-1 6.
Cause
Film gate partly open.
Remedy
Reverse projector to remove film; pull open the main access door. Open lens mount (Stage
63) and close fully, then repeat from Stage 16.

Problem
No stable picture, but only a varying pattern on screen.
Cause
Automatic threading lever still at "thread" position Remedy
Pull gently on film (Stage 18) until threading lever sets itself with a click. Alternatively,
reverse projector to remove film and start again at Stage

Problem
Intermittent jerking of picture on screen.
Cause
Broken or strained perforations are causing automatic loop reformer to operate.
Remedy
None required if, between jerks of the picture, projection is normal. If it is not, see below.