Grinding noise (rumbling) on HP LaserJet M712 M725
If you're hearing a grinding noise from the fuser area on your HP LaserJet M712 or HP LaserJet M725 series printer, you may have a worn-out fuser drive assembly. This is becoming a common issue as these printers age.
You can remove the fuser and inspect the fuser drive assembly gears for wear. Replacing this part is considered a medium to advanced level repair and will involve removing all the outer covers and disassembling the printer. If you decide to purchase a replacement fuser drive assembly from PrinterTechs, we can provide instructions.