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TQIII & TQIII Specialist

User Manual

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Summary of Contents for 1598

Page 1: ...8 mm Super 8 mm 9 5 mm 16 mm Film Projectors Slide Transparency Projectors in Various Formats and also a selection of Camera Darkroom Equipment Serviced Refurbished Reconditioned TQIII TQIII SPECIALIST 1692 1693 1694 1695 1598 16mm Filmosound User Manual Bell Howell www Panchromatic co uk Service Panchromatic co uk ...

Page 2: ...cause there are certain teaching applications in which users may wish to thread or unthread the projector manually If like the majority of users you always leave the projector to thread itself automatically this section need not be read Finally there are Stages 51 69 on routine maintenance These are important but can be ignored until you have projected a few spools of film and become familiar with...

Page 3: ...or to the mains 3 Check that the setting of the voltage selector 3a corresponds to the voltage of your local supply To change the setting first remove the moulded power lead connector from its socket 3b if it has already been inserted loosen screw 3c and move the sliding cover to the left Then use a small coin or screwdriver to rotate the selector until the correct voltage setting appears against ...

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Page 5: ... in Stage 24 Secure the spool by pressing the spool lock until it clicks into position at right angles to the spindle 13 Attach to the rear spindle an empty spool of sufficient capacity for the film you are going to show and secure it with the lock The projector will accept spools of up to 2 000ft 61 Om capacity The spool supplied carries 1 600ft 490m of film 14 If necessary set the run still ever...

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Page 8: ...useful economy setting of the lamp the projector has an exclusive safety device to warn you if because of variations in the supply voltage the lamp is being over run In some localities and at certain times of day the mains supply may rise appreciably above the nominal value so reducing the life expectancy of the lamp Should this happen when you are using a TQlll Specialist projector you will be wa...

Page 9: ...erage life may be reduced it s safe to continue the performance 21 As soon as the picture is on the screen centre it by using the tilt Control 21a Adjust focus with control 21b If the line separating adjacent frames is visible at the top or bottom of the picture remove it by rotating the framer control 21 c 22 On certain Specialist models set the soundtrack selector switch 22a according to the typ...

Page 10: ...um adjust the tone control 22c Specialist models have separate tone controls to increase or decrease the proportion of treble 22c or bass 22d In auditoria where echo is a problem it may be helpful to decrease the bass response and for the maximum intelligibility of speech increase the treble If the 600 ohm output socket le is being used adjust volume and tone with the controls on the separate ampl...

Page 11: ...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 y...

Page 12: ...nge from one stationary frame to the next tap the animation lever 27a If however you wish to move on for a few frames before showing another Still picture press 27a down until the next frame to be examined s on the screen and then release it 28 After showing a still or using animation there is no need to switch the lamp off before reverting to normal running Just move the run still ever forward to...

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Page 15: ...ojection difficulties are likely to take one or other of the following forms Problem Film not drawn into projector after being pushed under 4 Cause Run still lever at rear sill picture position Remedy Move lever to front position Cause Tip of film bent or otherwise damaged Remedy Use trimmer to remove damaged tip Stage 15 Problem Tip of film enters projector after being inserted under 4 but reappe...

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Page 17: ...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 perforat...

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Page 19: ...nt spool If scratch remains on screen but is not seen entering projector proceed to Remedy Switch off immediately Inspect and clean film path between entry roller 4 and projection aperture in gate Stages 63 64 Problem Scratch not visible on screen but visible on film at rear of projector Cause Almost certainly an existing scratch but outside the projected area Examining film as it runs from front ...

Page 20: ... Any film transport difficulties not covered by the remedies above Causes and remedies Such difficulties are very rare and will in almost all cases be due to serious imperfections in the film If film is not running normally after operation of the system restorer Problem f switch off and remove it manually as described in Stages 45 50 Repair or remove any damaged section if the film is your own pro...

Page 21: ...ult needing the attention of your audio visual dealer Cause Break in speaker cord or fault in external loudspeaker Remedy Remove plug of speaker cord from back of projector If sound now comes from projector s internal speaker there is a fault in the plug cable or very unlikely the external speaker Examine the cable for obvious signs Of damage and makes temporary repair If there are no such signs s...

Page 22: ...air Problem Low level of sound Cause Volume control not sufficiently advanced Remedy Advance Cause Dirt in region of sound optical system Remedy Clean Stage 66 Problem Unpleasant sound from a film sound track known to be good Cause Unsuitable setting of tone controls Remedy Return controls to 0 then try other settings Cause Excessive loop at sound drum Remedy Correct with system restorer Problem f...

Page 23: ...t part automatically and when the tip emerges from the projector insert it under the loose turns of film on the rear spool until it is held sufficiently firmly to be taken up normally as the spool rotates Always have the main access door open Stage 34 when using the forward and reverse switch positions to clear the film from the projector You can then keep the film path under observation If the fi...

Page 24: ...ector lead it over roller 41 band into the space between the lower sprocket guard and the sprocket wheel Continuing this action carry the film downwards and around the roller 41 c and lay it in the exit slot 41 d below the three rollers The film should now be correctly seated round the sound drum and in the exit slot but not yet pushed into engagement with the sprockets on the underside of the spr...

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Page 26: ... teeth lift it away from the upper sprocket wheel Slide the film clear of the film gate and the slot 48a Hold it as shown and disengage it front the upper part of the lower sprocket wheel at 48b and the sound drum at 48c Finally again holding the film as shown and bringing the hands together disengage it from the lower part of the sprocket wheel Remove the two loaded spools for safety winding up a...

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Page 29: ...tinue projecting 56 Exciter Lamp If the projector is otherwise working normally but there is no light behind the red window in the exciter lamp cover the most likely cause is a failed exciter lamp Pull open the main access door and set the main power switch to off Unscrew the securing knob 56a and taking care not to strain the film with the edge guide 56b lift the cover away from the projector 57 ...

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Page 32: ...l parts of the projector should be dusted from time to time for the sake of its appearance Some parts must be cleaned regularly for the sake of the films you will be using These are the parts coming into contact with the film which can easily be scratched as it moves from spool to spool by even small accumulations of abrasive dirt 63 Picture Gate Before every presentation and it the last film show...

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Page 35: ...y necessary readjustments if the precise alignment of the system is disturbed The magnetic head should occasionally be taken out Stage 60 and lightly brushed to remove any particles of magnetic oxide Do not attempt to remove obstinate accumulations of oxide from the head with any tool or fluid This is a delicate component adjusted in the factory to a high degree of precision If it cannot be cleane...

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Page 38: ... complying with international standards The best sound quality is obtained on full width stripe which you are recommended to use for your recordings unless you need either of the two special facilities provided by half width stripe One of these facilities based on the fact that a half width stripe leaves half of an existing optical track still usable is to have a choice of two different sound trac...

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