Brother MFC-J6510DW Service Manual page 109

Random horizontal stains
User Check
- Check that recording paper is loaded in the paper tray correctly.
- Print on blank paper sevel times to clean the rollers.
- Clean the platen.
Step
1 Maintenance unit contaminated
2 Leveler roller (LR) stained
3
Rollers heavily contaminated
(Front)
User Check
- Check that the recording paper is not out of specification.
- Clean the paper pull-in rollers (T1 or T2).
Cause
Head cleaner stick
2-79
Solution
Clean the maintenance unit.
Clean the leveler roller ASSY. See Function code 70.
(Refer to Chapter 5, Section
Replace the engine unit.
Maintenance unit
5.1.4.24.)
(cleaning)
Confidential