Brother MFC990CW Service Manual page 184

6.1.17 Components on the Engine Unit (Earth spring, Maintenance unit,
ASF motor*, Carriage motor, Star wheel holder, Paper ejection roller,
Platen, Inner chute ASSY, Registration sensor actuator, PF encoder/
registration sensor harness unit, Paper pull-in rollers R and L,
ASF gear shaft outer, and PE actuator) .................................................... 6-81
6.1.18 Bank ASSY and Base Pad on the Paper Tray ASSY................................ 6-93
6.1.19 Routing of the Harnesses, Flat Cables, and Ink Supply Tubes ................. 6-94
6.2 LUBRICATION........................................................................................................ 6-107
Confidential