Brother DCP-8070D Service Manual page 199

(13) Secure the Document cover with the two bind B M4x12 Taptite screws.
(14) Connect the two Connectors into the Main PCB.
(15) Connect the Connector into Driver PCB.
(16) Secure the ADF FG harness and FB FG harness with the cup S M3x6 Taptite screw.
Connector
(ADF motor harness)
ADF FG harness
FB FG harness
Taptite cup S M3x6
Connectors
(ADF relay harness)
Connector (FB cover sensor)
<Left side>
Fig. 4-30
Main PCB
Fig. 4-31
4-20
Taptite, bind B M4x12
Taptite, bind B M4x12
Driver PCB
Document cover
<Back side>
Driver PCB
Main PCB
Confidential