Brother MFC-J6510DW Service Manual page 64

Error Code 3B
Unable to Print 3B / Unable to Clean 3B / Unable to Init. 3B
Head/carriage unit stopped during printing. (Error caused by any problem except a paper jam
when ink is being jetted out)
User Check
- Remove the jammed paper.
Step
1 Foreign materials on the CR
timing belt or around the head/
carriage unit
2 Leveler roller (LR) ASSY not
mounted correctly on the head/
carriage unit
3 Switching lever guide out of place Reposition the switching lever guide.
4 CR encoder strip stained
5 Maintenance unit defective
Error Code 3C
Paper Jam
Head/carriage unit stopped during printing. (Error caused by a paper jam when ink is being
jetted out)
User Check
- Remove the jammed paper.
Step
1 Foreign materials on the CR
timing belt or around the head/
carriage unit
2 Leveler roller (LR) ASSY not
mounted correctly on the head/
carriage unit
3 CR encoder strip stained
4 Maintenance unit defective
Cause
Remove foreign materials.
Set the LR ASSY into place, using the LR jigs (LR
positioning jig and LR fitting jig).
Replace the encoder strip.
Clean the maintenance unit or replace it.
Cause
Remove foreign materials.
Set the LR ASSY into place, using the LR jigs (LR
positioning jig and LR fitting jig).
Replace the encoder strip.
Clean the maintenance unit or replace it.
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LCD
Solution
LCD
Solution
Confidential