Unknown Printer
Hey Folks (german Translation below)

Experienced technical support provide their insights in answering this question :
Btw: Sparepart number of the fuser is HP C2H57A

How to Identify and Fix Common printer Problems ?

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

Plug the printer directly into a wall socket. Turn the printer back on. Often times the reseating the fuser and rebooting the printer will allow the fuser to reset itself. If the 50.2 Fuser error message returns, it`s time to replace your fuser and possible the power supply.
If you are experiencing an “50.2F. 00 Fuser error”, first turn the printer off and back on. Sometimes the error will temporarily go away with a reboot so you can print a few more pages, but usually the error reappears.
50.AF is a low fuser temperature error and usually caused by a defective fuser. Resetting the printer is unlikely to resolve this error.
An Er/04, Er/05, or Er/06 error message indicates a paper jam. Find and clear the printer of any jammed paper, or reset the printer if the printer has no jammed paper.
The message `Fuser Error` or `Self-Diagnostic` means either the fuser has reached the maximum temperature allowed or there has been an error in detection of the correct temperature during specific times of the printing process.
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.
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.
This is accomplished by the fuser lamp. The lamp operates at 120VAC or 250VAC and is typically rated at 500W to 600W. The control signal from the heater control circuit is typically low voltage (< 9VDC).
Error code= 800702e4. This can occur if there is a problem with the driver or the digital signature of the driver. The printer is deployed via Group Policy and other printers are also deployed in the same way environment without any issues.
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.
Your printer monitors the life of your fuser. When the fuser reaches the end of its life, the printer displays 80 Fuser Exhausted. This message indicates it is time for you to replace the fuser. For best print quality, make sure you replace the fuser when the printer displays 80 Fuser Life Warning.

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