I have also run into this issue and have found a couple of ways that sometimes fixes the error and sometimes not. I am batting about 60/40 for fixing. The easist one is to turn the printer off oh say when you go home and then thurn it on when you get in the next morning, or even during the day if it is not printing now. You can also try to reseat the fuser and see if that works if you happen to have another printer the same you can swap fusers and see if they both work. here is what i got from an HP tech when I was having so many with the same issue, I have about 25 of these printers and the batch I got seemed to have had a batch of bad fusers because once I replaced the fusers I have noit had mostly no issues with them execpt for using generic toner cartridges. they also highly suggest that the printer not be plugged into a power strip but to the wall here is the steps from HP tech 3700 cold reset All right. Let's perform a cold reset on the printer control panel to restore the factory default settings. To do that, steps: NOTE: Please remove the network cable while performing the steps. 1. Turn the printer on. 2. As the printer performs its power-on sequence wait until the printer starts counting its memory. 3. Press and hold the SELECT button until all three lights on the control panel are lit. 4. When SELECT LANGUAGE appears on the display, press the arrow button until COLD RESET appears on the display. 5. Press the SELECT button. The printer will perform a cold reset and then continue its power-on sequence.
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Re: fuser error on the hp 3700dn printer
You need to replace the fuser since it is most likely caused by a bad fuser. The 50.1
error indicates a low fuser temperature which can be caused by a fuser
failure or a DC controller failure. The HP part number for the fuser is
Q3655-69001 for a 120V printer. You can also get the fuser as a
replacement supply from your toner supplier the item number is Q3655A.
Depending on how long you have owned your printer, the fuser needs to
be replaced at 50 months or 75,000 pages which ever comes first.
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A 50.3 error means that the temperature of the fuser got to high.
Just try switching it of for 20 minutes and try again.
If it happens during a large print job, this may help, if the error returns when powering up the machine, the fuser is faulty, but if so, that means it would have to be replaced.
If you are printing narrow media (A5, envelopes) etc. try printing them in small batches,, and allow the printer to cool of in between batches.
Remove the printer from any UPS supplies, additional power supplies, or power strips.
Plug the printer into a wall outlet to check whether this resolves the problem.
If the printer is already plugged in, try another power source in the building independent of the one being used.
The line voltage and current source at
the printer location might need to be inspected to make sure that it
meets the printer's electrical specifications.
Turn the printer off then on.WARNING: Be careful when removing or reseating the fuser. Temperatures can reach 400+ degrees Fahrenheit.
If the message persists, turn the
printer off for 30 minutes to allow it to cool, then reseat the fuser
after checking the internal wiring connections on the right and left
side, ensuring that these connections are properly seated.
If the 50.1 or 50.2 error recurs after
power-cycling the printer or when trying to print, try installing a
known good fuser from another HP LaserJet 4100 series printer, if
If the fuser is near or at the end of its estimated life expectancy (approximately 200,000 pages), then replace the fuser.
After replacing the fuser, print a
Configuration page, a Menu map (shows fuser settings), an Event log, a
Supplies status page, and a Usage page, to reference the status of the
new fuser and to ensure that the previous fuser settings are in place
with the replacement fuser.
To print an Information page on the HP LaserJet 4100, perform the following steps
Press the MENU rocker key until INFORMATION MENU appears on the printer display.
Press the ITEM rocker key until PRINT CONFIGURATION (or until PRINT MENU MAP, etc, appears in the printer display.
Press the SELECT button to print the selected information page.
To print an information page on the HP LaserJet 4100MFP, perform the following steps
Press the MENU button.
Press the DOWN Navigation button until INFORMATION is highlighted.
Press the RIGHT Navigation button.
Press the DOWN Navigation button to highlight PRINT CONFIGURATION
(or PRINT MENU MAP, etc, appears in the printer display.
Press the SELECT button, the button with the checkmark on it to print the selected Information page.
If 50.x errors persist after properly
installing a known good fuser, or if the errors follow the questionable
fuser (provided it is not near the end of its estimated life
expectancy), contact HP for further assistance.
HP now recognise this as a manufacturing fault and have released a service note for it and will send you a new fuser free of charge. The description of the fault is:
When a print job is sent to the printer, the printer will display processing job on the control panel, and will continually ramp up and down attempting to print the job. After several minutes the printer will return to ready without posting any error messages. Occasionally, after several minutes the print job will print.
The fix for the fault is:
The fuser needs to be replaced and firmware needs to be upgraded to version 04.060.7 or higher.
The customer will need to download the latest firmware from hp.com, version 4.060.7 or higher. The firmware can be downloaded from hp at "hp.com/go/support" . Select Download drivers and software (and firmware) in step 1 and in step 2 type in the printer name, LJ P4014, LJ P4015 or LJ P4515
It's probably best to update the firmware before you phone HP to report the fault, or at least tell them you have. If you do update the firmware, you will notice some extra numbers and letters on the display when the printer initialises. This is normal, it's probably used by HP staff for diagnosis.
The fuser is a customer replaceable part, and does not require a service technician to install. If the customer requests a service technician to install the fuser the customer will be responsible for the labor. The fuser can be sent directly to the customer with instructions to upgrade their firmware.
What this means is that HP will send you a new fuser to fit yourself.
The models covered by this service note are:
HP LaserJet P4014 Printer series, HP LaserJet P4015 Printer series, HP LaserJet P4510 Printer series.
EFFECTIVE DATES Start: 2010-01-01
What this means, is that HP will send you a new fuser for this fault until the end of 2010, although they do sometimes extend the active time period for service notes.
Hello, The 50.2 error means your fuser is not heating up. You will need to order either just the fuser HP Part # RG5-7060 or the maintenance kit HP part # Q1860-69002. Check your local computer store or we can ship the parts to you. If you need additional information contact me at our web site below.
This fuser error can lead up to a series of solutions, and I will list them in order of easiest to hardest.
1) Unplug your printer from the wall, wait 5 minutes and plug it directly into the wall, UPS battery backups and Surge Protectors can trigger this type of error.
2) If you have another one of these printers, try swapping the fuser roller with another one while the power is off and see if the error persists upon startup.
3) Last and least desirable, you may have a failed Engine Controller Board, which is responsible for among many things, making sure the fuser is at the proper temperature and has no tears. Be aware that this repair requires a pretty serious disassembly, and can be daunting to a newcomer.
The fuser is actually considered a part replaced with routine maintenance, around every 100,000 to 150,000 pages. It is what is responsible for the carrying the charged toner particles and heating them up to melt them onto the target paper (New HP Laserjets use a wax based toner for better environmental impact) Problems with the fuser generally show themselves as lines or splitting images on printed paper, but if serious enough (as in a tear on the roller) can cause the printer to cease printing to prevent serious damage to the interior of the machine.
A 50 Service error is a fuser error. Turn the printer off for 5 to 10 minutes, then turn it back on. If the error is still there, I think your going to need to make a service call you can try reseating the fuser, but be sure to let the fuser cool completely before touching it. Good Luck the HP Laserjet 4p is a great printer.