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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.
Xenon bulb depressurizing. Check for envelope discoloration; replace if defective.
3.
Lamphouse blower not moving adequate air. Clean; lubricate seal blower.
4.
Lamphouse blower failed or obstructed. Clean dust and dirt from blower inlet grille. Check for 115
V.AC at 7 & 8; replace blower if defective.
5.
Lamphouse air vane switches faulty. Check for vane actuation; adjust or replace as required.
6.
Lamphouse exhaust obstructed. Clear obstruction; clean outlet grille.
7.
Exhaust air flow switch reacting to backdraft. Adjust actuator to compensate for backdraft.
8.
Fluctuating AC source voltage actuating brownout or spike protection circuits in xenon power supply.
See power supply manual.
Power supply does not energize when actuated.
1.
Door interlock switch, B1 blower, F1 blower fuse, S4 air vane switch, S2 power switch, S3 MODE
switch. Check for 115 V.AC at each station; replace defective component.
SEE POWER SUPPLY TROUBLESHOOTING UNDER SAME HEADING.
Noise in theatre sound as bulb ignites.
1.
Faulty RF suppression capacitor(s). Remove and test C1, C2, C3, C4A or C4B. Replace if defective.
2.
Lamphouse, power supply, or sound system not properly grounded. Connect to adequate earth ground.
3.
Leads between lamphouse and automation contact not shielded. Shield leads in conduit. ("AUTO"
Mode applications only.)
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 opertor'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.
Extremely long duration between ignition pulses.
1.
Low DC "no load" voltage from the xenon power supply. Check "no load" voltage; see power supply
manual.
2.
Defective spark gap. A "Ping" sound is normal; excessive "Hissing" is abnormal. Replace if defective.
XG2/023
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