Bell and Howell 1598, Руководство пользователя

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P a n chromatic TQIII & TQIII Specialist User Manual
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To please your audience
Although the adjustments described in Stages 21 and 22 take only a few seconds, your
presentation will be more polished if you have aligned and threaded the projector, and set the
focus, framing and sound controls, before the audience arrives. After making these adjustments,
stop the projector by turning the switch to the vertical "off" position and then, turning it one click
anticlockwise, run the film through the projector in reverse until the first picture or title frame is
below the blue entry roller "4" ready for the performance. Return the switch to "off". Turn the
volume control back to zero and later, immediately after starting the projector to begin the
performance, advance it smoothly to the number you selected originally: with sound, a fade-in is
more agreeable than a sudden start.
Remember that people and their clothes absorb sound, so that a volume level suitable for an
empty hall may be inadequate when the audience are in their seats. Sample the sound as soon as
you can – moving some distance from the projector to do so – and make any further adjustment
that seems desirable.
The position of the loudspeaker is important. It should be as close to the screen as possible and at
about the same height as the heads of a seated audience. The best way to overcome echo from
the rear walls or ceiling is to regard the loudspeaker as a "searchlight" and aim it so that the beam
would illuminate a seat in the centre of the auditorium.
23 At the end of the spool of film, move the switch back to position "3" as soon as the last picture
frame has been projected, simultaneously turning the volume control to Q" Turn the switch to the
vertical 'off" position when the film has run out of the projector on to the rear spool. If you are
going to rewind the film immediately, proceed as in Stage 24. If the presentation is to continue
without interruption, open both spool spindle locks and remove the full and empty spools. Load
and project the next spool as in Stages 12-22. In the interest of lamp life, the cooling fan will
continue to run. After about a minute it can be stopped, if total silence is desirable, by setting the
main power switch to "off.
24 To rewind a film after projecting it, leave the spools where they are. Pressing the release
button 24a, raise the rear spool arm a few degrees and release the button. Continue moving the
arm until it locks in a vertical position. Carry the tail of the film from the underside of the rear
spool to the underside of the now-empty front spool 24b and secure it in the slot or Clip of the
spool hub. Move the switch anticlockwise to the arrowed position. As soon as the spools start to
rotate, press the rewind button 24c fully down and then release it. When all the film has returned
to the front spool, move the switch to the vertical "off" position. Remove the loaded spool and
then briefly advance the switch to "3" to disengage the rewind drive, subsequently returning the
switch to "of”.