Brother DCP-J4110DW Service Manual page 61

Error Code 18

Paper Jam
Paper jam during duplex-printing
Registration sensor does not detect paper feed within specified pulse numbers in the second side
paper re-feed
(recording paper was pulled out, or very likely to have been pulled out.)
User Check
- Remove the jammed paper.
- Check whether the recording paper being used is within the specification.
- Check that recording paper are not curled, wrinkled or wet.
Step
Foreign materials in the duplex
1
print paper path
Registration actuator caught on
2
the surrounding parts
3 Registration sensor defective
4 Main PCB defective
Cause
Remove foreign materials.
Set the registration actuator into place.
Replace the registration sensor PCB ASSY.
Replace the main PCB ASSY.
2-24
LCD
Solution
Confidential