Canon iR4570 Series Service Manual page 118

Chapter 2
4) Connect the cable [1] to the connector [2] of the host machine (intended for an NE controller).
5) Secure the controller [1] to the host machine's rear cover using 4 screws [2].
6) Take up the slack from the cable connecting the host machine and the controller; bundle the excess length on the
controller side, and fix it in place using a harness guide [1].
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