asterisk users - Mar 2004 - Message: "Power alarm on module 1, resetting!"

Has anyone else seen this message, which I am getting written on the console
several times a day? Asterisk does not have to be connected to the console,
and there is no apparent problem associated with to this message, although I
do have problem with noise, especially a ringing type noise that sounds
similar to feedback on many voicemail messages and problems with garbled
faxes, maybe for the same reason.

The system has Digium FXO and FXS cards only. If module 1 refers to channel
1, then it is a Digium T100P.

Of course, I don't know for sure that this message comes from Asterisk, but
other people have reported it on Asterisk systems
(http://www.mail-archive.com/asterisk-users@lists.digium.com/msg26076.html),
and I can't find any reports that don't involve Asterisk.

Can anyone help me?

Thanks.

Jim