HP 4240, 4250, 4350 Laserjet 50.2 Fuser Error Warm-up Issues
HP Laserjet 4240, 4250, 4350 50.2 fuser error Warm-up Issues
If the HP laserjet 4240, 4250, and 4350 printers have a fuser warmup service problem then the 50.2 fuser error is displayed on the control panel. Several situations can result in this error. In this article I will walk you through several of the problems that can cause this error and explain what steps can be taken to try and clear the 50.2 error without the need to replace the fusing assembly.
HP LaserJet 4240, 4250, 4350, RM1-1082, Fuser Assembly
Troubleshooting The HP Laserjet 4240, 4250, 4350 50.2 fuser error
1. If you were to call HP or any service company they would recommend checking the power source. These machines handle a large amount of power. They should be plugged straight into a wall outlet and not a power strip or battery backup. I know what some of you are thinking. It has worked for years like this I don’t need to change it. Do with the information what you want. I’ve seen power issues cause problems like this before so I would advice doing it.
2. If you just replaced the fuser check and make sure you ordered the right one and type. There are several different types of 4000 fusers that can be installed in this machine and will not work. Also there is a 220v and a 120v fuser. Given the several options it is easy to purchase the wrong one or the vendor to accidently ship you one that has the wrong heating element installed in it and it will result in a 50.2 fuser error. Happen to me twice, by the way.
3. Is just the fusers age. Inside the fuser is a fuser film and heating element. Overtime the heating element starts to ware out and get scratches in it. This causes the machines to take longer to warm up which can result in this error.
Conclusion About the HP Laserjet 4240, 4250, 4350, 50.2 Fuser Error
Final thing to try is to turn the machine off, unplug it, and let it sit for 10 to 20 minutes and remove and reseat the fuser unit. This allows the machine to clear out its memory and when the machine next starts it will go through its normal power up sequence. If this doesn’t resolve the  50.2 fuser error in your HP laserjet 4240, 4250, and 4350 printer the next thing to do is replace the fusing assembly. Below is  instructions on how to remove the fuser and below that is a link to purchase a replacement fuser if everything else has failed. Hopefully the tips above have helped you resolve the 50.2 fuser error in your HP laserjet 4240, 4250, and 4350 printer.
HP 4240, 4250, 4350 Laserjet Fuser Removal
Note: Unplug power and communication cables and allow at least 10 minutes for cool down before fuser removal.
1. Open the rear output bin. Use your finger to squeeze the hinge pin (formatter side) out of its mounting hole.
2. Rotate the output bin away from the printer until the right hinge pin is released, and then remove the output bin.
3. Squeeze the blue fuser release tabs
4. Pull the fuser straight back and out of the printer.
Hopefully, this article has helped you troubleshoot the 50.2 fuser error in your HP laserjet 4240, 4250, and 4350.
HP LaserJet 4240, 4250, 4350, RM1-1082, Fuser Assembly
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