Troubleshooting Procedures - ADB F-Range L-850C Manual

F-Range Type L-850C Style 3 Inset Lights
2. Troubleshooting
Procedures
Problem
1. Lamp not
energizing
2. Lamp not turning
on at normal level
3. Lamp output
distorted
4. Improper color
5. Short lamp life
6. Distorted light
beam output
7. Water inside optical
chamber
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Troubleshooting procedures for the F-Range inset lights are
contained here.
Possible Cause
Defective lamp
Loose or broken contacts
Moisture inside assembly causing
current leakage
Defective isolation transformer
Continuity incorrect
Broken or damaged lens
Filter broken
Filter bracket broken
Current too high
Water in assembly
Defective lamp
Overvoltage
Cracked or damaged lens
Damaged or missing lens seals or top
cover O-ring
Cut or nick on L-823 cordset
insulation that exposes wire
96A0285D
Issued 04/13
Troubleshooting
Corrective Action
Replace lamp and film disc cutout (if
used). Refer to Replacing Lamp in the
Maintenance section.
Tighten or replace.
Open up light assembly. Clean, dry, and
inspect light assembly. Replace O-ring.
Check transformer output current with
meter.
Check lamp filament and wiring for
continuity.
Replace lens.
Replace filter bracket assembly.
Replace filter bracket assembly.
Check constant current regulator and
isolation transformer.
Inspect prism. Open light assembly.
Clean, dry and inspect light assembly.
Replace O-ring.
Replace lamp and film disc cutout (if
used). Refer to Replacing Lamp in the
Maintenance section.
NOTE: Lamp interior will have a white
powdery appearance if air has entered
through a hole or crack.
Check to see if lamp has black burns. If
so, check isolation transformer output
with meter. Replace isolation
transformer, if defective.
Replace lens.
Replace both lens seals. Replace top
cover O-ring.
Replace insulation.
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