Brother HLL3290CDW Service Manual page 233

(3) Disconnect the First side CIS flat cable, the Second side CIS flat cable, and the Panel flat
cable from the Main PCB.
(4) Disconnect the FB motor harness and the ADF motor harness from the Main PCB.
Release the FB motor harness, the FB ground wire, the ADF motor harness and the ADF
ground wire from the securing fixtures.
Second side CIS flat cable
First side CIS flat cable
Harness routing: Refer to
(5) Remove the FFC holder cover.
FFC holder cover
Panel flat cable
(For non-touch panel models)
Panel flat cable
(For touch panel models)
Main PCB
Fig. 3-20
"1. Left side of the machine (ADF unit, Document scanner
Fig. 3-21
3-42
ADF sensor harness ASSY
FB motor harness
unit)".
Confidential