unknown

asked Feb 11, 2003 at 10:17pm
Hp HP LaserJet 4

HP 4L jam

When attempting to print on my HP 4L, it starts to feed the paper, the motor runs for a few seconds, then all 4 lights come on and a blank page feeds out and the lights stay on. I need to unplug it to reset. This happens when attempting to print from computer or when trying a test page from panel. When the 4 lights are on I press the panel button and the top 2 orange lights stay on (paper and error). The paper sensor appears to be intact. Any ideas of what else to check?