Replacing The Backplane Board (C4Bp); Replacing The Rear Ir Sensor Board (Rear Irb) - Christie 4K40-RGB Series Service Manual

6. Replace the HIP, if required.
7. To re-install, repeat these steps in reverse order.
When replacing the HIP, make sure you place it appropriately and secure the inline connector.

Replacing the backplane board (C4BP)

The backplane board (C4BP) provides the main interconnection between the input modules and the
signal processing board (the HIP).
1. Remove the card cage.
2. Remove all the option cards (on page 55) and cover plates from slots 0 to 4.
3. Remove the IMXB board (on page 65).
4. Remove the HIP board (on page 67).
5. Disconnect the four fan harnesses.
6. Remove the 12 screws securing the backplane board and pull it out.
7. Remove the two clips holding the middle guide rail bracket.
8. Clip the middle guide rail bracket in place on the new backplane board.
9. To re-install, repeat these steps in reverse order.
Ensure fan harness connectors do not get trapped behind the backplane board.

Replacing the rear IR sensor board (rear IRB)

The rear IR sensor board (rear IRB) receives command codes from the IR remote to control the
projector operation.
1. Remove the rear cover.
2. Disconnect the rear IR harness (J108_F).
3. Remove the screw securing the rear IR sensor board to the bracket.
4K40-RGB Series Service Guide–D4K40-RGB, Roadie 4K40-RGB, Mirage 4K40-RGB
020-102960-02 Rev. 1 (12-2019)
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Printed circuit boards and sensors
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