Lamp; Lamp Does Not Ignite; Lamp Suddenly Goes Off - Christie D4K35 Service Manual

Section 4: Troubleshooting
4. On the TPC, verify in the Operational Status region of the Main panel that there is no failure with PIB3G
communication (PIB3G Status).
4.2

Lamp

4.2.1 Lamp Does Not Ignite

1. Verify the hours currently on the lamp. If the hours are close to
the typical lamp life, replace the lamp.
2. Check for interlock failures. From the Main panel on the TPC,
tap the LED in the top, left corner to open the Status window.
Alternatively, tap the Menu button and select Status. With the
Status window open, tap Interlocks. If a failure is shown,
interlock needs to be cleared before the lamp will light.
3. For EVB communication failures, re-boot and try again.
4. If the All Alarms field of the Status window shows a Lamp
Power Supply (LPS) communication problem, re-boot the
projector and try turning the lamp ON again.
5. Check for an alarm condition. From the Main panel, tap the LED in the top, left corner to open the Status
window. Tap Temperatures. If a DMD temperature is too high, the lamp will not ignite. Cool the projector
and try again. Ensure there is proper ventilation, air filters are not blocked and liquid cooling reservoir has
coolant and is circulating.
6. Listen for a "clicking" noise to indicate the LPS is attempting to strike the lamp. If the lamp does not ignite
after the second attempt, check the power level of the lamp in the Advanced Setup: Lamp Power/LiteLOC
Setup window. The lamp power may be too low, especially if the bulb is old. If the lamp power is
acceptable, replace the lamp. For more information, refer to
if you hear a brief "click", but no light appears, the lamp likely needs replacement. If you do not hear
anything, it may indicate a problem with the LPS (Christie-trained service required).

4.2.2 Lamp Suddenly Goes OFF

1. Check the lamp power in the Advanced Setup: Lamp Power / LiteLOC Setup window. Try increasing
the lamp power. NOTE: Older lamps may not reliably operate at significantly lower than rated power.
2. An interlock may be interrupting lamp function. From the Main panel, tap the LED in the top, left corner
to open the Status window. Tap Interlocks. If a failure is shown, interlock needs to be cleared before the
lamp will light. Also, ensure that extractor fans are powered.
3. The DMDs may be overheated. Check for an alarm condition. From the Main panel, tap the LED in the
top, left corner to open the Status window. Tap Temperatures. If a DMD temperature is too high, the lamp
will not ignite. Cool the projector and try again. Ensure there is proper ventilation, air filters are not
blocked and liquid cooling reservoir has coolant and is circulating.
4. Replace the lamp. For more information, refer to
4-2
Figure 5-56 Install New
Figure 5-56 Install New Lamp.
Lamp). Alternatively,
D4K35 Service Manual
020-100817-01 Rev. 1 (04-2012)