Discoloration of Lamp/Base

Xenon lamps generate an extremely high level of heat. Most of this heat needs to be removed from the lamp and projector in a rapid and efficient manner. Trapped heat and excessive temperatures must be avoided in order to protect both the projector and the lamp.

If the upper limit of 230°C is exceeded, the lamp bases and cable start to discolor from light yellow to brown and dark blue in extreme cases.

• Check that the projector exhaust/extraction fans are running . Are they moving air at the correct volumes/speeds needed to cool the lamp specified by projector manufacturer's manual?
• Check that all projector air filters are clean according to the projector's instruction manual. OSRAM has proven that dirty filters increase the temperature of the lamp.
• Loose screws and connections in the lamp area will increase the resistance in the circuit and cause higher than desired lamp temperatures. Check all lamp connections to ensure they are tight.
• Verify that the lamp is being operated within OSRAM's specified operational parameters found on the Service Card inside the lamp box.
• Check the alignment of the lamp within the projector's optical system (reflector). If a lamp is far enough out of alignment it is possible that thermal damage may occur to the lamp bases and cable.