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CONTENTS (Continued)
PAGE
then goes out 60; Tube tilts feebly 61; Tube lights and keeps on tilting 61; Device is very noisy 61-62.
MOTORS AND MOTOR GENERATORS : 63-66
Undue wear and other damages are evident 63-65; Coils and windings, especially around Commutator, seem damaged. Weakened insulation is visible 65-66.
OPERATION OF SET: 76-80
Set loses original efficiency 76-77; Set is noisy 77-78; Unusually severe vibration 78; Motor does not deliver desired amperage 78; Motor does not deliver desired voltage 78-79; Characteristics of set change when new brushes are installed 79; Whole set seems to overheat 79-80.
PICTURE DEFECTS: 97-99
Action is not natural, but is fast, slow, jerky, etc. 97; Clearness of picture is reduced after lenses are removed and replaced 97; Clearness of picture is reduced after new lens is installed 98; Definition becomes poor, clearness is reduced 98; Flashes of white light show on screen during projection 99.
PROJECTOR: 128-135
Fire shutter (automatic) sluggish 128; Fire shutter rises slowly, drops too soon if speed is slightly reduced 128; Fire shutter fails to work 128; Film buckles 129; Film climbs sprocket 129-130; Friction drive of Arc Controller or Motor drive wears excessively 130; Friction material develops flat spots 130; Friction drive fails to operate projector 130-131; Friction drive operates off and on 131; Governor type drive operates badly 131-132; Governor drive fails 132; Thrust Disc operates poorly 132; Motiograph speed control operates poorly 132; Baird speed control operates poorly 133; Intermittent wears excessively 133; Lower loop constantly lost as splices come through 133-134; Parts, bearings wear rapidly 134; Mazda mirror images do not fall exactly between filament images 134-135; Tension shoes jump and clatter 135.
REFLECTOR ARC LAMP: (MECHANICAL
TROUBLES) 37-38
Mirror backing continually chips or flakes off 37; Mirror surface pits 38; Occasional aperture fires occur when using Reflector Arc 38.
RHEOSTAT: 136-140
Amperage does not change when Rheostat adjust