Brother printer MFC-9330CDW printed paper has a bumpy spot

[zillah]

Dear Experts

I have printer brother MFC-9330CDW when I print I am having the issue on a printed paper it has bump as in the snapshot below:

https://imgur.com/a/w6K6K9M

I tried to clean the drum but may be I didn't do it in a proper way as I am not sure the cause of the problem

https://imgur.com/a/3ek32wU

Please advise what could be the problem ?

Thanks

 

[dudio]

It's the exact same imprint, equally spaced.
It's on a roller with about a 3-4" circumference

 

[zillah]

Thx for that
What should I do to fix the issue ?

 

[dudio]

Check every larger roller about that size that you can get at.
If you still can't find it, I would print a page thru while holding the printer in both hands,
and tapping the whole thing on a solid surface while it printed. If that doesn't work, I'd bang it on a solid surface while it printed.
Obviously Step 1 is the nicest way to do it.

 

[RealTechfromlalaLand]

Well after reading the suggested answers on this thread and shaking my head at all the wrong answers the real answer and how to fix it is in this really good video I found on utube

View: https://www.youtube.com/watch?v=JR5Y9sBbTjY