17
1 6 m m P R E C I S I O N P R O J E C T O R
OPERATORS TROUBLE SHOOTING GUIDE
The following material is a list of the difficulties most commonly encountered by
operators together with the cause of the difficulty and the remedy.
SYMPTOM
PROBABLE CAUSE
REMEDY
(1) Lamp does not light
Tubes do not light
Motor does not run
}
Branch circuit fuse burned
out
Broken connection in line
cord
Broken connection in
extension cords
Replace fuse
Repair cord
Repair cord
(2) Lamp does not light
Amplifier and motor operate
Burned out lamp
Lamp switch has failed
Replace lamp
Contact Authorized Service
Station
(3) Lamp lights, amplifier
operates, motor does not run
Worn motor brushes
Worn governor brushes
Dirty governor contacts
Contact Authorized Service
Station
Clean contacts
(4) Amplifier tubes do not
light
Burned out amplifier fuse
Replace fuse
(5) Amplifier tubes light, but
exciter lamp does not light
Polarity reversed if
operating on DC current
Burned out exciter lamp
Damaged tubes
Turn line cord plug around
Replace exciter lamp
Replace tubes
(6) Hum or crackle from
speaker
Amplifier is wet
Dirty motor
Damaged tube
Store in dry place
Contact Authorized Service
Station Check tubes
(7) Volume decreases when
lamp is turned on
Poorly regulated power
supply
Loose connection in
power cord
Power extension cords are
inadequate
Use voltage regulator
Check connections
Use larger extension cord
(8) Amplifier fuse burns out
Excessive line voltage
Damaged tubes
Amplifier requires
servicing
Check with public utility
Replace tubes
Contact Authorized Service
Station
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