Siemens L-852A-D manual Troubleshooting

Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures		Troubleshooting
	WARNING: Allow only qualified personnel to perform the
5. Troubleshooting
	following tasks. Observe and follow the safety instructions in

this document and all other related documentation.

WARNING: De-energize the circuit and lock out the circuit or regulator so that the circuit cannot be energized by remote means before attempting to service the fixture.

This section contains troubleshooting information. This information covers only the most common problems that you may encounter. If you cannot solve the problem with the information given here, contact your local Siemens Airfield Solutions representative for help.

	Problem	Possible Cause	Corrective Action
1.	Lamp will not	Defective lamp	Replace lamp and film disc cutout (if used).
	energize		Refer to Replacing Lamp in the Maintenance
			section.
		Loose or broken contacts	Tighten or replace.
		Moisture inside assembly causing	Open up light assembly. Clean, dry, and
		current leakage	inspect light assembly. Replace O-ring.
		Defective isolation transformer	Check transformer output current with
			meter.
2.	Lamp not turning on	Continuity incorrect	Check lamp filament and wiring for
	at normal level		continuity.
3.	Lamp output	Broken or damaged prism	Replace outer cover assembly.
	distorted
4.	Improper color	Filter broken	Replace filter bracket assembly.
		Filter bracket broken	Replace filter bracket assembly.
			Continued on next page

© 2001 Siemens Airfield Solutions, Incorporated	96A0149E	Page 23
All rights reserved	Issued 5/01