Brother MFC-3340CN Service Manual page 168

Routing D: MJ-main harness and MJ-line harness through the SDAA enclosure
Scanner motor harness and
panel-main harness
Routing E: Power cord, MJ-main harness and MJ-line harness in the MJ/PS shield box
MJ-main harness
MJ-line harness
MJ/PS shield box
MJ-main harness
Power cable
Speaker harness
MJ-line harness
Main PCB
Power supply PCB
5-70
SDAA enclosure
Power supply shield
Confidential