We are going to look at 1 with a C6600 code. Might also be making a clicking noise.

I saw for another different model number some mention of the drive unit causing problems
and maybe a tech bulletin.

Is there something like that for this one? Had a Copystar dealer say the fusing belts sometimes have problems.
I believe the machine may have around 150,000 total pages, maybe 2/3 in color.

thanks