the purpose of this film is to illustrate the need for individual care and preventive maintenance by the projectionist on a q one project you will notice the operator has to hand wind to take up real due to a broken take up cel to avoid interrupting the continuity of the film being shown the projectionist had to improvi in any emergency the operator must remain calm and do the best he can under the circumstances projectionist is replacing the takeup belt with the new one as soon as the film was spanish a minor situation could happen any time therefore to minimize such occurrences a system of inspections has been set up this enables the operator to become more familiar with this equipment and to be aware of the condition of project or in his daily and periodic inspections the projectionist includes any preventive maintenance necessary such as oiling cleaning and replacement of parts internal lubrication for the a q two a one projector is applied through a one point feed lubrication system on oil is applied to the central aisle well cup located on top of the projector case all projectors should be lubricated only with oil bearing military assemble twenty one thirty five h and this should be used sparingly it is a good idea to follow the same path as the film takes in your step by step inspection and all guide rollers on the a q two a one projector should be lubricated with twenty one thirty five a joy well every one hundred hours of operation or every sixty days film guide roller chefs are all every two hundred fifty hours to facilitate the cleaning up in the film shows and run the projector the show to remove all traces of dirt an stop the projector and thoroughly clean the film shows the film shoes must be perfectly clean otherwise the film may be damaged to claim the pressure and aperture plates then move the pressure plate from the machine caution never attempt to remove this plate while the projector is running soften the dirt with alcohol then remove cake the motion with a smooth soft thick reinstalling the aperture plate place the retaining slots of the plate over the guides on the mounting brackets then push the plate downward as far as it will go next insert the pressure plate back into its proper position when installing this plate the clips should seat properly on the plan which is then push the plate in all the way next make sure the projection lenses plain and free of all things are prints remember fingerprints should be removed at once otherwise they may become permanently etched in the lens cloth or lens tissue then examine the filament then glass to make sure they are free of defects if any flaw is detected replace the element with a new one while the projection lamp is out of its socket clean the lamp reflector and condense lens with lens tissue when installing the projection lamp line up the flange is on the base of the lamp with the slots in the lamp socket then press down firmly and turn in a clockwise direction until it locks in place wipe the lamp with the lens to shoot to remove the thing  after installing the lamp project the light on the screen and focus the image of the aperture for the light be uneven adjust the position of the lamp with the adjustment lever right labor move the lamp socket in and out while the left one moves the sockets backward result in excessive sound flutter while rotating the drum remove all dirt and then from its surface with a clean solved lint free cloth to check the exciter lamp first make certain the power to the projector has been disconnected then remove the cover by turning the thumbscrew counterclockwise until the cover can be lifted from the projector then move the exciter lamp release and locking ring to its right hand position to release the registration pins and permit the lamp to be lifted out claim the lamp with lens tissue and inspect the filaments and glass if a flaw is detected replaced with the new lamp to clean the exciter lamp lens and blow air across the surface then polish with a lens tissue never attempt to take any lens out of its housing this should be done by qualified technicians only using precision and meant when installing the exciter lamp place the lamp based openings over the appropriate registration pins and turn the locking ring to the extreme left by valving girlfriends from the lamp and replace the cover all projectionists should be able to ascertain the probable causes of operational deficiencies or breakdowns when they occur some of the more frequent occurrences then possible remedies are motor operates but projection lamp does not light this may be caused by a motor lamp switch not turned to a lamp position projection lamp not seated correctly and socket causing poor contact or the projection lamp is burned out there you're not sharp on screen one side or entire picture may be fuzzy this could be due to improperly focused dirty oily finger spotted or defective projection lens insufficient pressure plate tension or pressure plate not seating firmly against film enough but your general still moves too short or it could be bad still picture is satisfactory but there is no sound possible remedies are  an amplifier switch that's a loud speaker selector switch in correct position make sure loud speaker cable is properly connected or replace burned out of sight or lamp inadequate sound volume or distorted reproduction due to volume control not turned up sufficiently dirt or oil partly obstructing sound optical system dirty or defective exciter lamp bad soundtrack or worn film sprocket holes fails to rewind film properly the trouble may be bent or stretched a rewind belt or a belt all pulleys or lock nuts on real arm too tight or to lose or the plunger may be set in the improper position if the projector does not function at all it may be faulty electrical wiring or a blown fuse to check unplug the projector then remove the fuse from the  defective replaced with new fifteen amp two hundred fifty volt fuse no special tools or equipment items are required for the preventive maintenance services delegated to the projectionist and the items which are necessary for on the spot replacements are kept in the project or case door is  curs other than that which can be remedied immediately sending equipment through authorized channels for repair additional information on the care and maintenance of a q two a one projector is contained in tech water ten d one dash to dash nine dash one study it if you do not have a copy of this tech water it can be obtained through authorized publications gentle a good projectionist through conscientious preventive maintenance will diagnose major trouble before it happens and take steps to avoid stop downs during showing