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Current display not operating.
1.
Check for loose connection on plug J4 on control panel PC board.
2.
Defective M2 ammeter. Replace as required.
Elapsed bulb hours not recording.
1.
Check for loose connection on plug J6 on control panel PC board.
2.
Defective M1 hour meter. Replace as required.
Bulb goes out during operation.
1.
Xenon power supply overheated; thermal switch open. Check power supply blower(s), air inlets and
outlets unobstructed. See power supply manual.
2.
Lamphouse cover loose or open. Close and secure.
3.
Xenon bulb depressurizing. Check for envelope discoloration; replace if defective.
4.
Fluctuating AC source voltage actuating brownout or surge protection circuits in xenon power supply.
See power supply manual.
Noise in theatre sound as bulb ignites.
1.
Faulty RF suppression capacitor(s). Remove and test C1. Replace if defective.
2.
Lamphouse, power supply, or sound system not properly grounded. Connect to adequate earth ground.
Excessive light flicker.
1.
Faulty or aged bulb. Check for cracked or sagging electrodes; replace if defective.
2.
Excessive ripple in DC output. See power supply manual.
3.
Arc stabilization magnet reversed. NORTH pole should point toward operator's side. Check with
compass if required.
Reduced light output.
1.
Normal bulb aging. Increase output current. DO NOT EXCEED MAXIMUM CURRENT LEVEL
SPECIFIED BY BULB MANUFACTURER.
2.
Soiled reflector. Clean using commercial glass cleaner; USE NO ABRASIVES.
3.
Soiled heat filter, projection lens, or large lens. Clean as required.
4.
Bulb or reflector position altered. Correct alignment; see preceding OPERATION section.
Extremely long duration between ignition pulses.
Low DC "no load" voltage from the xenon power supply. Check "no load" voltage; see power supply manual.
1.
2.
Faulty igniter printed circuit board assembly. A "Ping" sound is normal; excessive "Hissing" is abnor m al.
Replace if defective.
Colors burning or fading prematurely.
1.
Bulb incorrectly focused to "hot spot." Refocus bulb to flat field with iris fully open and spot size
control handle ("trombone") fully forward.
2.
Heat filter glass missing. Do not operate without filter glass in place.
3.
Reflector or heat filter coating peeled. Wipe coated surface with clean, dry cloth or paper towel; peeled
coating appears as "glitter." Replace if defective.
XG4/020
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