Canon imageRUNNER ADVANCE C5000 Series Technical Workbook page 123

4) Remove the 3 connectors[2] and 1 screw[3], remove the cable guide[1] from the saddle unit to pull out the
saddle unit even more.
5) Remove the 4 screws[3] and 1 knob[2], remove the saddle inside cover (lower)[1].
6) Remove the 6 screws[2] and remove the saddle stitcher controller PCB cover[1].
pg. 121