asked Jan 22, 2003 at 10:37am
Hp HP LaserJet 4M

HP 4M Noise

Suddenly, when I turn on my HP 4M LaserJet, it sounds like a NASA rocket being launched. Perhaps an errant fan?

Thanks to fixyourownprinter.com, I repaired this printer three or four years ago. The fix worked exceptionally well . The printer has worked flawlessly until the appearance of this very scary sound.

I've still got a new toner cartridge on hand, so I'm a bit reluctant to give up on the printer.

Questions: (1) What, if anything, can be replaced to repair the printer; (2) Can it be used for one or two pages at a time, despite this awful sound?

Does it make the noise all the time or just when you try to print? If it is noisy when you aren't printing, it would be the fan on top of the printer. When you remove the top cover, it is at the right rear of the machine right on top. Does the printer still print and feed paper correctly? I'm assuming it is since you didn't mention any error codes.
by david belton on Jan 23, 2003 at 8:28am Add comment
The rear fan doesn't usually make that kind of noise. I'd be more inclined to suspect the laser scanner motor. Try and isolate the noise to either the right rear or the top, front center of the printer where the scanner assy is.
by moe on Jan 23, 2003 at 8:58am Add comment
Just tried letting the printer run beyond onset of the noise (best likened to the sound of a vacuum cleaner). Sure enough, after 30 seconds or so, the printer cycled back into warm-up and displayed Error 52. So Moe's hunch about the scanner motor seems to have nailed it.

Sincere thanks to Moe and to David for responding so quickly to my question!
by unknown on Jan 23, 2003 at 1:33pm Add comment