Got this laser printer here that's giving me some trouble...

It's a Panasonic KX-P6500.  First I was getting horizontal lines.  I know I
remember reading something in here about that,  but can't remember when or
who it was that posted that.  Then tonight I opened the side door that
gives you access to the works.

The drum,  fuser,  etc. assembly all comes out as a single unit.  So I
popped this out,  saw some accumulation of toner here and there (mostly at
the ends of the drum),  blew them out,  tapped on it a bit,  and put it
back together.

*NOW* I get big,  almost all-black bands across the pages.  Looking at one
bit of printout I see about three or so on a page...

Anybody have any suggestions for dealing with this?  What's the proper way
to clean one of these up?

I need to print some resumes...!

---