Christie D4K25 User Manual page 112

Section 7: Maintenance
6. Carefully slide the positive anode connector off the front of the lamp.
7. Holding the cathode end of the lamp, unscrew the lamp from the cathode connector. Carefully remove the
lamp from the projector and immediately place it inside the protective cover or original packaging.
Caution! Handle the lamp by the cathode/anode end shafts only, never the glass.
8. Place the lamp on the floor where it cannot fall or be bumped. Warning! Handle box with extreme caution
- the lamp is hazardous even when packaged. Dispose of lamp box according to safety regulations for your
area.
9. With the lamp removed, visually inspect the reflector for dust. Clean the reflector if necessary. See
and Clean Optics.
10. Remove the tape, knurled nut, and locking star washer securing the lamp within its cover.
11. If you are installing a different type of lamp from the original, ensure the correct position of the anode
yoke. See Section 2:Install the Lamp.
12. Insert the threaded cathode (-) end of the lamp into the negative lamp connector nut located in the rear of
the lamp compartment. (Figure 7-2) Using both hands, hand-tighten this end into the threaded nut.
Caution! 1) Handle the lamp by the cathode/anode end shafts only, never the glass. DO NOT over-
tighten. DO NOT stress the glass in any way. 2) Check leads. Make sure the anode (+) lead between the
lamp and igniter is well away from any projector metal such as the reflector or firewall.
13. Rest the anode (+) end of the lamp on the anode yoke and slip the positive lamp connector over the bulb
end. (Figure 7-2) Using the 5mm Allen key, squeeze together with the anode clamp making sure not to
place any torque on the lamp quartz tube. Important! Ensure that the "flat" part of the anode end of the
lamp is facing up. Warning! Explosion hazard - Do not apply torque to the anode end of the lamp.
14. Tighten the negative and positive lamp connector screws. Important! Proper electrical contact prevents
resistance in the lamp connectors. Caution! 1) Handle the lamp by the cathode/anode end shafts only,
never the glass. DO NOT over-tighten. DO NOT stress the glass in any way. 2) Check leads. Make sure the
7-4
Figure 7-1 Removing the Lamp
Inspect
D4K25 User Manual
020-100882-02 Rev. 1 (07-2012)