NemTech

asked Nov 18, 2005 at 11:44am
Hp HP LaserJet 3100

Hp Laserjet 3100 problems

I have 3100 A.I.O. and its printing blank pages and also taking all the sheets of paper in the tray one at a time until its empty anybody know how to fix this?



P.S. Its a customers printer and they want a estimate before I work on it which in this case is difficult
It could just be a software issue. Best way to diagnose is to disconnect from the computer, turn the power off and then turn the power back on. If it comes to ready do a self test and see if it prints. If it does it may just be a corrupt driver or a job stuck in the printq. I would just delete the printer from the computer and reattach and reinstall.
by dmzcompute on Nov 18, 2005 at 12:06pm Add comment
For the pickup problem you will need to change the pickup roller and 2 separation pad kits, as for blank pages try a new toner but also check to make sure you have removed the toner seal.
by kevinm77 on Nov 18, 2005 at 12:17pm Add comment
Sorry guess I didnt type enough info, these problems are happening even during a printer self test report.
by NemTech on Nov 18, 2005 at 1:07pm Add comment
Then your issue is probably the selenoid which controls the pickup roller. I would think you would get a paper jam message after a couple of sheets though. You can check it out by removing the left side cover. What happens is when a print command is sent and the paper feeding starts the paper pickup selenoid attracts a holding bar to it releasing the pickup roller to turn. The bar should then release back and stop the pickup roller movement. If the bar does not release back the roller will keep on turning. What bothers me is the fact that the sheets are blank. I would think it would print the first sheet. You may also have an issue with the engine control unit which on that machine would be to much money to repair. Not cost effective. When you remove the left cover see if that piece I mention is sticking and not going back. HP used a damping material on those to cut down on noise. Over time the material broke down and all that was left was the glue which held the material. If the glue is strong enough it prevents the arm from going back. If that is your issue you can clean off the glue residue and put a piece of electrical tape over the bar to cut down on the noise and see if it works. My gut feeling is ECU.
by dmzcompute on Nov 18, 2005 at 1:20pm Add comment