Re: LaserJet 2100 fan cycling
Tony
>I've got an LJ 2100M that I bought new about ten years ago. I very soon
>put the JetDirect 600n ethernet card in it and it's been taking care of
>our low-printing LAN ever since (page count = 19,300 and we're just
>coming to the end of our third toner cartridge). All in all, I've been
>very happy with this machine.
>
>Until recently, there was quite a noisy computer next to the LJ. Now
>that's gone and I can hear things from the printer I never noticed
>before. I have no idea when this started but now the fan cycles on and
>off even when nothing has been printed for hours (or even days). It
>comes on and runs for exactly four minutes, then it stops. Exactly six
>minutes later, it comes on and runs for four minutes again. It repeats
>this cycle continuously.
>
>Can this be normal?
>
>Thanks in advance for any insight / analysis.
>
>cheers,
>
>Henry
No this is not normal.
The fan motor rotates at full speed while the main motor is rotating and should
continue to ratate
for 30 seconds after the main motor stops.
It should also rotate at full speed, half speed, and then
stop during power on and the standby period.
There are only two components that could cause this.
There is the main circuit board and an intermediate board. Most likely the main
board is causing this problem.
Regretably it is probably not worth the cost or the labour to replace it.
Fans can intermittently fail but this cannot be the problem here partly because
of the exact period of running and stopping but mainly because the printer
would not work if the fan is not running when it shoud, in that case an error
condition will be indicated on the control panel of the printer.
Tony
MS MVP Printing Image