The non-profit I work for has a Dell 5100cn Printer which has been acting up recently, to our puzzlement. When a page is printed the content is printed on the paper however the page is covered with a random color (red, blue or a mix of these two) all across the page over the content. (You can still see the content through this overlaid color.) It is as though extra toner is constantly being printed onto the pages. My guess is that one of the parts needs replacement but the manual doesn't have a solution to the problem. The printer doesn't display any error messages. Could it be the toner is bad? Any thoughts on what the problem / solution would be greatly appreciated.