Brother MFC-J3520 Service Manual page 66

Error Code 3E

Unable to Print 3E
Defective occurs in the carriage motor, paper feed motor.
Step
1 Foreign materials in the
recording paper path
2 Foreign materials in the
maintenance unit
3 Foreign materials around
paper feed roller belt
4 Foreign materials around
paper eject roller belt
5 Foreign materials in the engine
unit
6 Maintenance unit not mounted
in place
7 Flushing box not mounted in
place
8 Carriage rail not mounted in
place
9 Platen not mounted in place
10 PF encoder sensor defective
11 CR encoder sensor defective
12 Carriage motor defective
13 Paper feed motor defective
14 Main PCB defective
Cause
Remove foreign materials.
Remove foreign materials.
Remove foreign materials.
Remove foreign materials.
Remove foreign materials.
Set the maintenance unit into place.
Set the flushing box into place.
Set the carriage rail into place.
Set the platen into place.
Replace the PF encoder sensor PCB ASSY.
Replace the carriage PCB ASSY.
Replace the carriage motor ASSY.
Replace the paper feed motor.
Replace the main PCB ASSY.
2-32
LCD
Solution
Confidential