asked Mar 1, 2007 at 1:24pm
Hp HP LaserJet 1200

HP Laserjet 1200

We have an HP Laserjet 1200 that is driving me nuts.

When you first turn on the printer, it takes makes a wirring noise and then turns on all 3 lights and sits like this. I understand from the manual that this means that there is a 'fatal error'.

I tried disassembling the printer and remove the external print server, unseat reseat all connections and during this process, checking to see if anything changed the result. While I was doing this, I had a hard time keeping the door closed that allows you to change the toner cartrige since I had the side plastic panel removed and subsequently realized that if that door was open when you turn the printer on the printer works fine.

Close that door prior to turning the printer on and once again you have the fatal error problem.

This worked for a while, then we were back to the orriginal problem of just having all 3 lights on regardless. Any clues?
BTW, if you hold in the button, all three lights stay on. Leaving the printer off for an hour the printer started working again if you leave the front door open, printed 3 test pages, then immediately after the 3rd test page resulted in the 3 lights coming back on.

Could this be something failing when it gets warmed up?
by unknown on Mar 1, 2007 at 2:40pm Add comment
Error according to the manual is an internal RAM or ROM error and the solution is to replace the formatter.
by dmzcompute on Mar 1, 2007 at 3:56pm Add comment