Brother MFC8420 Service Manual page 124

(5) Remove the two bind B M4x12 Taptite screws, and then remove the joint cover front L.
(6) Remove the two bind B M4x12 Taptite screws, and then remove the joint cover front R.
(7) Remove the cup B M3x10 Taptite screw, and then remove the driver PCB ASSY.
Driver PCB ASSY
Taptite, cup B M3x10
Driver PCB harness
Joint cover
Joint cover front L
Fig. 4-75
Joint cover
Fig. 4-76
4-43
MFC-8420/8820D/8820DN, DCP-8020/8025D/8025DN
Taptite, bind B M4x12
Taptite, bind B
M4x12
Hooks
SERVICE MANUAL
Joint cover front R