HP LaserJet 50.X Fuser Error

 

50.X Fuser Related Issues on New HP Models

50.X fuser  errors in HP’s new models with heating elements like the  4000, 4100, 4200, 4250, P4015, P3005, and P2015, etc…  generally means that the fusing unit inside the machine has gone bad.  First thing to try is turn the machine off, unplug it,  and let it sit for 10 to 30 minutes then plug back in. If it starts back up and works just keep an eye on it and if it does it again I would replace. I had one a few weeks ago that I replaced where the machine threw the error about once a week so they would reset the machine and it would work until a few days later. This went on for a few months before they finally called me out. I know, I looked at the error log.  Another thing to check is your power source. All these machines should be plugged straight into the wall, or seperate surge arrest, and no battery powered back-up. Also, they should not be on the same ciruit as a coffee maker, heater, copier, or any other device that uses lots of power. If you have to many devices plugged into the same circuit  then the machine doesn’t recieve enough power and it will not get up to its correct operating temp. resulting in a fuser error. Trust me, if you call HP, this is  one of the first things they will ask. So it does happen and I’ve walked into customers and have heard the all to familiar sound of the alarm on a power back up that they have the printer plugged into.  If checking those few things doesn’t resolve your 50.X error then replacing the fuser  95% to 99% of the time will correct the issue.  The fuser  runs directly from the AC power supply as it’s one of the few units inside the machine that runs on AC power. The other 1% to 5% of the time it will be the high voltage power supply or DC controller in that order. If you have a volt meter you can run a continuity check across the heating element, lamp,  or thermal fuse if you want to verify the error or reassure your customer that your checking all possibilities. The X represents the actual error location.
NOTE: Never replace a fuser with the power on. It can be easy to forget, given how easy they are to replace, but if done you could overload the new fuser a fry it. Power is gradual when you first turn a machine on, but if you replace with it turned on at the time it gets a sudden jolt of energy.

● 50.1: Low fuser temperature
● 50.2: Fuser warm-up service
● 50.3: High fuser temperature
● 50.4: Faulty fuser
● 50.5: Inconsistent fuser (verify voltage model)
● 50.6: Open fuser
● 50.7: Pressure release mechanism failure
● 50.8: Lower fuser temperature
● 50.9: High fuser temperature

50. X Fuser Errors Related to Old HP Models

On older machines fuser errors are handled a little different. Models like the II, III, IIP, IIIP, 3si, 4si, 4, 5, 5si, and 8000 series sometimes would get random fuser errors and powering off and on the machine wouldn’t fix the issue. You would have to wait 10 to 30 minutes with the machine unplugged then power on to verify if you had a real issue. New machines you can just turn off, unplug,  install a new fuser, and  turn back on.   Also machines like the II, III, 5si, 8000, 8100, and 8150 were prone to have part of the AC power supply go out. On these models the 50 service error actually works in reverse. Usually you replace  the power supply then the fuser. This is where it’s nice to have a volt meter so you can verify which part is actually given you the problem.


Find well displayed printer parts diagrams at: http://www.printerworks.com/

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