Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual page 74

Dirt on the bottom end of paper
Step Cause
1 Dirt on the bottom
of drum unit
2 Dirt on base shaft
Check
Is the bottom of drum unit
dirty?
Is the base shaft dirty?
Fig. 1-11
Base shaft
* Figure of the front view
Fig. 1-12
1-57
Remedy
Result
Yes Wipe the dirt with a dry
cloth as shown in Fig. 1-11.
Yes Wipe the dirt with a dry
cloth as shown in Fig. 1-12.
Confidential