Brother DCP-7090 Service Manual page 78

9.11.6 Second side CIS unit / Second side CIS flat cable
(Only for models with duplex scanning)
(1) Remove the six Taptite cup B M3x10 screws to remove the Upper document chute from the
ADF unit.
Taptite cup B M3x10
Taptite cup B M3x10
Upper document chute
ADF unit
Fig. 3-39