Lamp Power Supply (Lps) - Christie D4K25 Service Manual

Section 5: Parts and Module Replacement

5.11.5 Lamp Power Supply (LPS)

• Use of the projector's rear safety strap, or hold-down bracket if using the optional rack
stand, is MANDATORY to prevent the projector from tipping when removing the Lamp
Power Supply (LPS).
• Keep the anode lead from the igniter at least 15mm away from the 1" hose used to cool the
igniter.
(Estimated Replacement Time: 90 minutes + 10 minute LampLOC™ Alignment)
The Lamp Power Supply (LPS) is located at the back of the projector between the firewall and the LVPS
mounting wall.
1. Remove lamp door. See
2. Remove lamp. See
3. Remove projector's rear lid. See
4. Remove back cover. See
5. Remove LVPS/LPS cover. See
6. Disconnect anode lead from igniter (M8 nut).
7. Disconnect cathode lead from grounding bracket.
8. Route both the anode and cathode leads through the opening in the firewall.
9. Remove the white plastic AC relay cover.
10. Disconnect terminals 2 and 6 (Lamp Power Supply AC) from the AC relay (2, #2 Phillips).
11. Route AC connections through the opening
in the LVPS mounting wall.
12. Disconnect ground lead from the PEM stud
(7mm nut).
13. Remove rear crossbar (2, 4mm hex screws
on each end and 1, 3mm hex screw in the
center of the firewall).
14. Remove the four screws (#3 Phillips
securing the LPS to the firewall and to the
baseplate.
15. Disconnect "RS232" and "Interface"
connections from the LPS.
16. Carefully, lift the LPS up and slide it out the
back of the projector using caution not to cut
any of the harnesses running along the side
and behind the LPS.
17. When re-installing, repeat instructions in reverse making sure to keep the anode lead at least 15mm from
the coolant hose used to cool the igniter. Perform LampLOC
ensure the harnesses are not pinched.
5-26
5.4.7 Lamp Door, on page 5-8.
5.12.5 Lamp, on page 5-30.
5.4.11 Rear Lid, on page 5-10.
5.4.5 Back Cover, on page
5.4.8 LVPS/LPS Cover, on page 5-8.
)
™
5-7.
Figure 5-35 Rear Projector View
alignment. NOTE: When installing the LPS
™
D4K25 Service Manual
020-100880-01 Rev. 1 (06-2012)