Brother MFC-J6520DW - Page 65

Confidential
2-31

Error Code 3B
Abnormal stop of head/carriage unit. Causes other than recording paper jam when ink
is discharging.
User Check
- Remove the jammed paper in platen part.
 Error Code 3C
Abnormal stop of head/carriage unit. Causes by recording paper jam when ink is
discharging.
User Check
- Remove the jammed paper in platen part.
Unable to Print 3B LCD
Step Cause Solution
1 Foreign materials in the engine
unit
Remove foreign materials.
2 CR encoder strip stained Clean the CR encoder strip.
3 Switching lever guide out of
place
Set the switching lever guide into place.
4 CR encoder strip defective Replace the CR encoder strip.
5 CR encoder sensor defective Replace the carriage PCB ASSY.
6 Main PCB defective Replace the main PCB ASSY.
Paper Jam LCD
Step Cause Solution
1 Foreign materials in the engine
unit
Remove foreign materials.
2 CR encoder strip stained Clean the CR encoder strip.
3 CR encoder strip defective Replace the CR encoder strip.
4 CR encoder sensor defective Replace the carriage PCB ASSY.
5 Main PCB defective Replace the main PCB ASSY.