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How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

When a 50. xx. yz Fuser error To continue turn off then on is displayed on the control panel, it indicates that there is an issue with the fuser. The XX and YZ are two digit codes that provide information on the specific issue causing the error.
The message “Fuser Kit Low” or “Fuser Kit Very Low” on your HP Color LaserJet M553 series printer is a warning that you have reached the recommended number of prints for your fuser assembly. (The fuser assembly is the consumable part in your printer which heats up and bonds toner to the paper.
50 error is a fuser error and means the fuser needs to be replaced. Do a search for the part on google and then see if it is worth repairing based on cost of the fuser and if you will need to hire someone to replace it for you.
If you are seeing a “50.1 Fuser Error” on your HP LaserJet 5000 or 5100 series printer, you probably need to replace the fuser. Fusers are a consumable part and are sold as part of a maintenance kit; it is expected over the life of the printer you will replace the fuser several times.
Error 50 is Invalid destination number.
Streaking, smudging, black lines, and double images are all symptoms of a bad fuser. When you notice these printing defects and experience problems, such as paper jams or wrinkles, this is a good sign to replace the fuser kit.
50.2 error indicates that the printer is not heating up fast enough. This can be caused by a bad heating element in the fuser but can also be caused when the printer does not have adequate power due to overloaded circuits or being plugged into a power strip or surge bar that limits current flow.
The fuser unit or fuser is a critical part of any laser printer. Using pressure and heat, it fuses the toner powder onto the page to create a print, and without it, the printer cannot operate.
Laser printer fusers adhere toner powder to a page using a combination of heat and pressure. The P4014 series use a thin fuser sleeve as a medium to heat the paper. Error 50.8 suggests one end of the fuser is not heating up which may be damage to the sleeve or heavy media.
The 50.1 fuser error message refers to a low temperature reading on your fuser. If you see the error message “50.1 Fuser Error” on your HP Color LaserJet 2820 or 2840 series printer, you probably need to replace the fuser. Fusers are a consumable part and are sold as part of a maintenance kit.
If you have NOT recently replaced the fuser or heavily jostled the printer around, then the 50.7 Fuser error indicates you have an actual fuser failure (the gearing pressure is not releasing) and the fuser needs replacing.
Look inside the fuser opening to make sure there is no debris or jammed paper. Remove any debris or jammed paper, if found. Hold the handles on each side of the fuser and reinstall it in the printer.
I found the following: Error 50 means that the heating of the fuser unit is no longer working. This is usually a burnt-out heating lamp,or a defective thermal fuse.
If you see this error code 50.5 on an HP LaserJet 4200, 4240, 4250, 4300, or 4350 series printer, the fuser installed in the printer is registering as an incorrect fuser for that model printer.
The BCCode 50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM).
When the fuser unit is nearing the end of its life, problems of deteriorated printing quality, such as residual images appearing on non-printed areas or toner not fixing onto paper completely or of paper coming out wrinkled, occur. In this case, it is recommended that you replace the fuser unit with a new one.
The fuser unit must be replaced every 100,000 pages, usually along with the transfer belt and feed rollers as part of a maintenance kit. The error code 010-351 indicates that the fuser has reached 100,000 pages and should be replaced immediately. The printer will not operate until the fuser unit is replaced.
Printing made easy with an HP Fuser Kit

It lets you print up to 150,000 pages of dynamic quality before you need to replace it.

Push the fuser firmly on the left side, then the right–listen for the sound of both blue levers clicking into place. If the fuser does not click into place you run the risk of wearing out both the fuser and the gears that drive the fuser prematurely. Re-install the plastic rear output bin and you are ready to print.
The drum rolls the toner onto the paper in the form of your print. The toner is melted & pressed onto the paper by heat from a fuser as it passes through its rollers. Your print comes out of the printer.
A fuser unit is a pair of heated rollers within the printer that fuses the toner onto the paper being printed on. Toner particles are pulled to the paper to create the desired text and images as the paper passes the imaging drum.
If your printer is turned on, disconnect the power cord from the printer. Keep the power plug unplugged for 60 seconds, reconnect the power cord to the wall, and turn on the printer. If the error persists, remove the cartridge from the printer, clean the cartridge contacts with a cloth, and reinstall the cartridges.
If your printer`s status displays “Printer in error state,” there may be a problem with the printer itself. Make sure the printer is turned on and connected to your PC by Wi-Fi or cable. Check it for low paper or ink, and be sure the cover isn`t open and the paper isn`t jammed.
Sometimes, simply restarting both your computer and printer can be the solution to the “printer in error state” issue. Power off your printer and computer completely, leaving them in this state for a few minutes, then turn them on again to see if the problem is gone.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Laserjet 4200 50.2 Fuser error
ANSWER : if you are using a good fuser the next part to try would be low voltage power supply

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HP laser jet 3015 "Upgrade Error Call HP Support"
ANSWER : rgtr

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Error Code 51.1 says Printer Error No Kidding.lol
ANSWER : Sometimes turning off and on will allow you to print a few pages. The error is a beam detect error. The only real fix is to replace the laser scanner unit. Could be a loose connector on the scanner or DC controller from the scanner. That’s unlikely. You could try the only other free fix which is to open the scanner assy. and clean all the mirrors inside. The dust could obstruct the laser beam enough to cause the detect error.

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HP 4250 13.06.00 Fuser output paper stop !
ANSWER : pick up solenoid

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error 50
ANSWER : Most likely the quartz lamp in the fuser assy. burned out. you can remove it and check the resistance on the 2 large pins in the connector. Should be several ohms.

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HP 4050 Error 13.1 & 13.20
ANSWER : I tried the fix you recommended but it still would not fix.

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HP 9040 MFP Error code
ANSWER : bonsoir

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49. 4C02 – ERROR To continue turn off then on
ANSWER : http://www.fixyourownprinter.com/posts/29877

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