It's an HP CM1415fnw - a recondition received directly from HP. Just unsealed.
I'm using cheap 'clone' toner - no need to pay so much for HP toner.
When I print in just black, there is no repeating dot.
When I print in color, there is a repeating dot spaced about 1 inch from top to bottom of the page.
Is there something I can clean to get rid of the dot?