08-27-2012 05:32 PM
i have an old HP LaserJet 4 Plus printer
working fine until a hour ago
now on the display I have a '50 service' message
what is it , how can I fix it?
i've turned off the power/pulled the plug
but it still came back
Please, any help !!
08-27-2012 06:58 PM
That is a fuser unit malfunction the part that fuse the toner into the paper by applying heat and pressure. Easy to replace by opening the rear door and removing 2 screws.