4-2
D4K25 Service Manual
020-100880-01 Rev. 1 (06-2012)
Section 4: Troubleshooting
4.3
Lamp ignites but will not stay on
• Check alarm conditions in the TPC
Status
window. Is there a DMD over-temperature alarm condition?
Resolve reported condition(s) as required.
• Is the correct lamp type selected in software. Check
Advanced Setup: Lamp
window.
• Check the lamp power setting in the
Advanced Setup: Lamp Power/LiteLOC Setup
window. Is it set
correctly for your lamp type.
NOTE:
Older lamps may not reliably operate at significantly lower than
rated power.
• Before you replace the lamp, check wiring connections, electronics and the Lamp Power Supply (LPS).
4.4
LampLOC™ not working
• If there are no visual changes at all when performing LampLOC
™
(while white test pattern is on screen),
check the following:
Is LampLOC IMCB reporting any communication errors?
Is douser open?
Check harness connections between the Lamp IMCB (P35) and EVB (P34A).
Check light sensor harness connection to Lamp IMCB (P36).
• Are light sensor values changing while performing LampLOC
™
. If not, try replacing the Light Sensor.
• Adjust each axis manually with the lamp OFF. Do motors move freely? If not, try replacing the Lamp
IMCB.
• If the lamp runs dim or the image displays poor uniform brightness, check the following:
Anode yoke is in the correct position for the lamp type used.
Anode yoke is not bent and lamp is centered in the reflector.
Lamp extension nut is used with CDXL-30SD lamps only.
The flat part of the anode end of the lamp faces up in the anode yoke. For CDXL-30SD lamps, the flat
part of the anode end is positioned at the 2 or 10 o’clock position.
• Replace Lamp. Ensure to set lamp type in
Advanced Setup: Add Lamp
window.
4.5
LiteLOC™ not working
• If lamp power has increased to its maximum in order to maintain a LiteLOC™ setting, LiteLOC
™
is auto-
matically terminated. If the values shown in the
Advanced Setup: Lamp Power/LiteLOC Setup
window
indicate that the lamp power has reached this “over-drive” state, either reduce your LiteLOC
™
setting or
install a new lamp.
• Replace the Lamp Power Supply (LPS).
4.6
DMD over-temperature warning
• Check DMD temperature sensor readings. Are they the same? If not, check each sensor for proper
mounting.
• Check coolant hoses for kinks which may restrict fluid flow. Fix if possible.
• Check coolant level. Make sure the coolant level does not fall below the minimum fill line indicated on the
reservoir. Top up coolant if required, using the Christie approved coolant JEFFCOOL E105.
• Check Radiator Air Filter located behind the cover next to the lamp door. If it appears grey in color, it
requires replacement.
• Ensure intake fans and LAD fans are working.
