One of the concerns that some customers have is that they just bought a brand new toner or brand new drum, they took it home, installed it and they still have poor copy quality.
They have lines, they have void image, or they have pure black copies. One of the things that you need to do is make sure that when you are installing a new drum unit, that you remove all packaging.

Here we’re going to work on the Brother HL 5250 Black and White Laser Printer. We’re going to show you how to take out the toner and the drum, replace it and what you should look for when you replace it in the way of cleaning and preparing the new drum and new toner if you're replacing both those.

The TN580 is compatible with the TN580, TN620 and the TN650. The TN580 is the high yield version for all three of those.
So we sell one toner cartridge for all three of those model or cartridge numbers.