Brother MFC990CW Service Manual page 279

Routing B: Document front and rear sensor harnesses on the ADF unit (for models with
ADF)
On the ADF unit (viewed from the bottom)
Bottom view
Document roller holder
Cable guide
Document front sensor harness
ADF unit
ADF motor harness
Cable guides
(Rear)
ADF drive unit
(6_30)
Document front sensor actuator
Document front sensor PCB
On the ADF unit (top view)
Top view
Document rear sensor harness
Document rear sensor PCB
Cable guides
Document feed roller 2
ADF drive unit
(Rear)
Document feed roller 1
ADF unit
(6_31)
6-95
Confidential