Unplug the three connectors for the toner control/ data cables (two from the control board and one from the power supply board) by pulling the connector up from the board.

De-route and remove these cables from the front cable guide.

Unplug the fuser unit power cable by squeezing the top of the retaining clip and pulling the connectors up from the power supply board.

De-route the fuser unit power cable from the cable guide on the back of the inner toner cover.