Brother MFC4820C Service Manual page 130

Routing B: Flat cables on the bottom of the lower cover (with the bottom plate removed)
Head flat cable 2
Head flat cable 1
Media flat cable 2
Media flat cable 1
EMC spring plate
(Main PCB)
PF encoder flat cable
CIS flat cable
Driver flat cable 2
Driver flat cable 1
(Lower cover placed upside down)
Routing C: Harnesses on the bottom of the lower cover (with the enclosure cover removed together with the
NCU PCB and power supply PCB)
Aluminum
evaporated film
(NCU
PCB)
(Front)
(Driver PCB)
6 -4 5
Driver flat cables
Flat core
(Power supply PCB)