M
Martin Brown
Guest
On 06/12/2013 01:47, John Larkin wrote:
If there is an internal bronwout the CPU generally notices that it was
rebooted by the watchdog tiimer and grumbles on the lCD display or
flashes the lights in a distinctive "I'm unhappy" pattern.
That tends to be something daft going on in the power management of
another networked PC somewhere. Some of them broadcast the equivalent of
"wake up" to all peripherals at the least provocation. I have known
certain (broken) printer drivers that did that all the time on Vista
even when they were *supposed* to be printing a real job!
You may find that it doesn't do it when isolated from the network / USB
connection to a PC. Check power management settings.
--
Regards,
Martin Brown
On Thu, 05 Dec 2013 15:35:52 -0800, Joerg <invalid@invalid.invalid
wrote:
It began last week. The Brother MFC-7820N multifunction laser printer
starts up out of the blue and sounds as if it wants to print something.
Fan comes on, display lights up, motors in there run. But no paper comes
out and nobody requested any print via the LAN. Then it goes idle again
as if nothing had happened. I know that ink jets do that to keep
cartridges primed but lasers normally don't, and this Brother printer
never did that before. It's about five years old.
Could it be power dips due to capacitor plague? Did someone experience
it? Not that it bothers me much but if this is a sign that something is
going to fail soon I may have to reach in there.
If there is an internal bronwout the CPU generally notices that it was
rebooted by the watchdog tiimer and grumbles on the lCD display or
flashes the lights in a distinctive "I'm unhappy" pattern.
My HP CP1525's (color laser) do that all the time. Start up for no
reason, make a bunch of noise, then shut down.
That tends to be something daft going on in the power management of
another networked PC somewhere. Some of them broadcast the equivalent of
"wake up" to all peripherals at the least provocation. I have known
certain (broken) printer drivers that did that all the time on Vista
even when they were *supposed* to be printing a real job!
You may find that it doesn't do it when isolated from the network / USB
connection to a PC. Check power management settings.
--
Regards,
Martin Brown