Replacing The Power Supplies - Christie Cinema 4K-RGB CP4315-RGB Service Manual

4. Disconnect the three AC breaker inline harnesses (MAIN/UPS connected to the 12V power
supply, 48V power supply harness, and AC inlet).
5. Replace the AC breaker.
6. To re-install, follow these steps in reverse order.
Hi-Pot testing must be performed after removing and replacing the AC breaker.

Replacing the power supplies

The Cinema 4K-RGB power supply assembly includes individual 12V and 48V power supply modules
secured within a support bracket.
The 12V power supply module provides the required voltages for operating the electronics in the
projector and for receiving a UPS connection (if installed).
The 48V power supply module provides the required voltages for the lasers and pumps.
Before servicing, always carefully observe the original lead dress. Take extra precautions to secure all
harnessing properly, especially in the high voltage circuitry areas. Replace any wire that appears to
have damaged insulation.
1. Shut down the projector and ensure it is disconnected from AC.
2. Remove the rear cover (on page 40).
3. Unplug the 12V connector from the 12V power supply module.
4. Unplug the 48V connector from the 48V power supply module.
Cinema 4K-RGB Service Guide–CP4315-RGB, CP4320-RGB, CP4325-RGB, CP4330-RGB
020-102713-03 Rev. 1 (11-2019)
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