Replacing The Laser Backplane (Lbp7) Board - Christie Cinema 4K-RGB CP4315-RGB Service Manual

Replacing the laser backplane (LBP7) board

1. Remove the laser driver card cage (on page 51).
2. Loosen the two captive screws securing the bottom cover plate and pivot to remove it.
3. Remove all harnesses from the HVCS and LVCS boards.
4. Use the locking tabs located on each of the seven PCBs to disconnect them form the LBP7.
The locking tabs are located on the bottom end of the LDCC.
5. Note the location of each board in the card cage, and carefully remove all boards from the card
cage. Set the boards on an ESD-safe surface.
6. Remove the six screws securing the LBP7 bottom cover to the laser driver card cage housing.
7. Remove the LBP7 from the bracket and move the bracket to the new LBP7.
8. Replace the LBP7.
9. To re-install, follow these steps in reverse order.
Cinema 4K-RGB Service Guide–CP4315-RGB, CP4320-RGB, CP4325-RGB, CP4330-RGB
020-102713-03 Rev. 1 (11-2019)
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