Brother Printer HL 5250DN

need printer service ,some times when the laser unit dirty than u should clean all optical mirror inside laser unit. sometime comes from drum , also if the fuser unit defective, last chance change toner cartridge.

Hit the purple/blue button on the top of the printer 3 times. This will print a settings report of the printer showing you the toner levels and the drum life.
If you need a new drum purchase one. (I would suggest a new printer at this time but if you like it continue on)
Open the front of the printer and pull out the toner and the drum cartridge. The drum is on the bottom of the toner. Disconnect the drum from the toner and connect the new drum. Replace the toner/drum and you are good to go.

Try this....
1: Turn off power and remove toner/drum
2: Tape the little spring loaded lever just inside the printer on the upper left hand side in the *DOWN* position! Do not replace drum yet and...
3: Turn power on to printer and let it cycle. Status/Toner lights will come on as usual.
4: Turn off printer, remove tape from lever, replace drum and turn back on.

When the toner light is on this means the toner is empty and needs to be replaced before it can print again. Replace the toner and you will be able to print again.

The problem coming because there is some paper jam in side the printer. Remove the toner cartridge and look inside the printer for any paper jam.
I hope it will help to solve your printer problem.

Try this....
1: Turn off power and remove toner/drum
2: Tape the little spring loaded lever just inside the printer on the upper left hand side in the *DOWN* position! Do not replace drum yet and...
3: Turn power on to printer and let it cycle. Status/Toner lights will come on as usual.
4: Turn off printer, remove tape from lever, replace drum and turn back on.

Replace the drum

how do i set the toner reset lever on a brother hl 5250 printer

If the smudges are gradually fading then it's likely just excess toner hitting the fuse drum. Try a few cleaning cycles/test prints and see if that makes it go away. If not, see if you can get a replacement toner.

call brother and tell them that the drum is shadowing and needs to be replaced or you can look in your area for a cartridge World and pay them to remanufacture that drum and If you are going to be printing check you really need to find a printer that has micr toner it has more metal ion the toner which makes it burn hotter.The toner that you are using may possibly be able to be lifted and info on the check could be [email protected]