Phaser 7400N dropped toner on transfer belt

[PBridges]

We are getting blobs of yellow toner on the bottom edge of our printed pages.  When I raised the toner assembly, there is an inch and a half wide streak of yellow on the transfer belt.  What would be causing this dropped toner? Can I clean this off or do I need to replace something?

[Annette966384-RSS]

My guess is the yellow imaging unit is failing.  I'd replace it.

[PBridges]

If I replace the yellow imaging unit, can I clean the transfer belt that has yellow toner on it?

[PBridges]

Can I clean the dropped toner off the transfer belt?

[PBridges]

Can I clean dropped toner off the transfer belt or does the transfer belt have to be replaced in addition to the imaging unit?  Thanks.