Brother MFC-J3520 Service Manual page 63

Error Code 31

Paper Jam
Head/carriage unit cannot return to origin. Detected by the CR encoder sensor.
User Check
- Remove the jammed paper in platen part.
Step
1 Foreign materials around the
maintenance unit
2 Foreign materials around the
flushing box
3 Switching lever guide out of
place
4 CR encoder strip stained
5 Flushing box not mounted in
place
6 Carriage rail not mounted in
place
7 Platen not mounted in place
8 Maintenance unit not mounted
in place
9 CR encoder sensor defective
10 Maintenance unit defective
11 Main PCB defective
Error Code 32

Unable to Print 32
Head capping is unable.
User Check
- Remove the jammed paper in platen part.
Step
1 Foreign materials around the
maintenance unit
2 Switching lever guide out of
place
3 Maintenance unit defective
4 Main PCB defective
Cause
Remove foreign materials.
Remove foreign materials.
Set the switching lever guide into place.
Clean the CR encoder strip.
Set the flushing box into place.
Set the carriage rail into place.
Set the platen into place.
Set the maintenance unit into place.
Replace the carriage PCB ASSY.
Replace the maintenance unit.
Replace the main PCB ASSY.
Cause
Remove foreign materials.
Set the switching lever guide into place.
Replace the maintenance unit.
Replace the main PCB ASSY.
2-29
LCD
Solution
LCD
Solution
Confidential