Replacing The Ikb Harnesses; Replacing The Hkb And Slb Harnesses - Christie Boxer 4K Series Service Manual

Replacing the IKB harnesses

The integrated keypad board (IKB) harnesses connects the IKB board to the Core4 backplane board
and the convenience light board (CLB).
Estimated replacement time: 8.75 minutes
1. Remove the top cover (on page 34).
2. Remove the user interface module (on page 60).
3. Release the harnesses from the three tension clamps and the one harness clamp.
4. Route the wiring free.
5. Disconnect the J26 and CLB inline connectors.
6. Remove the IKB harnesses.
7. Replace the IKB harness.
8. To install the new IKB harness, repeat these steps in reverse order.

Replacing the HKB and SLB harnesses

The HKB and SLB (sensor light board) harnesses connect the housekeeping (HKBA) and status LED
boards to the Core4 backplane board.
Estimated replacement time: 3.75 minutes
1. Remove the top cover (on page 34).
2. Remove the rear cover (on page 35).
3. Replace the HKB harness:
a) Disconnect J3 from the Core4 backplane board.
b) Disconnect J30 from the HKBA board.
Boxer 4K Service Guide
020-101699-04 Rev. 1 (02-2018)
Copyright 2018 Christie Digital Systems USA, Inc. All rights reserved.
©
Harnesses
94