unknown

asked Jan 7, 2013 at 4:02am
Hp HP LaserJet 4

HP laserjet 4 error 13

Hello,

I know that this topic was here more than just once but i have very special problem. I Disassemled my laserjet 4 and change it to print PCB(printed circuit board) instead of paper. When i turn it on, it warms up and after that it says 13 paper jam. I found 5 sensors that scan paper. One was above fuser and 4 were where the paper was feeding. I tried all combinations of them but it still says paper jam. I'm 99\% sure that the one above fuser has to be open.
I know that this is not a normal problem you solve here but i would really aprochiate your help. I just wanna know if there are more sensors and which sensors have to be open and which closed.
Somewhere in the net is the service manual for the hp4, I do not know where at the moment. This should tell you more about the sensors.
by hjh1311 on Jan 11, 2013 at 10:01am Add comment
Thank you very much. There was description of each sensor. It works now.
by unknown on Jan 12, 2013 at 9:43am Add comment