Disconnect the FFC (flat flexible cable) (which links the main board to the relay board) at CN1

Disconnect the Paper Edge sensor at CN2

Disconnect the APG (automatic paper guide?) sensors at CN4 and CN5.

Disconnect the FFC which links the Paper Feed Encoder to the relay board at CN6. The Paper Feed Encoder's FFC is also tacked to the Sheet Feeder by double sided tape. Carefully separate the cable from the Sheet Feeder's frame.

Deroute the red & black APG motor wires from the ASF (automatic sheet feeder) housing.

Deroute the Flat Flexible Cables from the groove in the Automatic Sheet Feeder housing.