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From: maddox@renoir.Berkeley.EDU (William Maddox)
Newsgroups: comp.sys.att
Subject: Weird 3b1 fan behavior
Message-ID: <21740@ucbvax.BERKELEY.EDU>
Date: Thu, 12-Nov-87 07:08:43 EST
Article-I.D.: ucbvax.21740
Posted: Thu Nov 12 07:08:43 1987
Date-Received: Sat, 14-Nov-87 17:50:32 EST
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: maddox@renoir.Berkeley.EDU (William Maddox)
Distribution: na
Organization: University of California, Berkeley
Lines: 18


The 3b1 apparently uses a variable-speed fan.  On mine, the speed varies
rather erratically.  Not only are the speed changes annoying to the ear,
but the fan seems to be running slowly most of the time, such that the air
leaving the fan is warm enough that I am concerned that the machine may
not be adequately cooled.  

I also have an older 7300, which has two fans that appear to always run
at a higher speed.  It is quite a bit noisier, but runs cooler and is
less annoying to listen to while trying to read or think.

Has anyone else observed this behavior?  Is it normal for the 3b1?
Is there any way I can modify the machine to run the fan at full bore?
Is there any reason why this would be a bad idea?

Bill Maddox
...!ucbvax!renoir!maddox
maddox@renoir.berkeley.edu