I am working on a Dell 1600n laser. It restarts itself several times when powering on and eventualy gets stuck on the message "Warming up Please wait". Some times it won't do any start up functions and displays a solid shaded line on the display. If I disconnect the scanner wires from the system control board it knows enough to display a "locked scanner message". I am thinking the Power supply board needs replacing? Any diagnostic help and/or parts locating help would be great. Thanks in advance.
Suspect the toner heating element (fuser) may be malfunctioning. Dell may be able to walk you through a "hard reset" that involves opening the front door, turning on an off the printer with certain buttons held down, etc.
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I have the same problem, but it sounds like it is feeding paper and the roller where the paper comes out keeps rolling.
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