Top critical review
It Works. But Not For Very Long.
Reviewed in the United States on October 29, 2017
I own one of the cheap Brother laser printers. I've had it for many years. Love the printer.
But I really dislike the drum replacement part and the toner replacement part.
As to the drum replacement part - DR420 - I installed it correctly (as I have several times over the years when a drum replacement was needed). This time, however, the "replace drum" light turned back on after I'd printed just 200-300 copies or so, about half a ream of paper!
I took out the drum, shook it up, re-installed it. The light stayed off for awhile. But it came back on.
Now, either the warning light is defective, or the drum replacement part is. But there's no way a replacement drum that costs about $75 can be done, wear out, after less than a ream of paper.
I haven't had the time to track down the cause of this problem. But I'm not happy about it, regardless.
Until I figure out what's wrong with this Brother DR420 Drum Unit, I suggest you consider another part for your Brother printer. Buy a cheaper knock-off part, if you can find one. This one costs far more than it's worth.
Unless you don't mind spending $75 on a drum that will stop working after you print a half a ream of paper.