Brother DCP-L8400CDN Service Manual page 294

(7) Remove the two Taptite bind B M4x12 screws and remove the Modem shield cover from
the Back cover upper.
Taptite bind B M4x12
■
A4 model/Legal model
(8) Disconnect the Modem flat cable (CN1) from the Modem PCB ASSY.
(9) Remove the Flat core from the Modem flat cable.
Fig. 3-175
Modem shield cover
9
Flat core
Fig. 3-176
3-130
Modem shield cover
Back cover upper
8
Modem PCB ASSY
CN1
Modem flat cable
Confidential