[comp.sys.att] reading the temp sensor

walker@edge.UUCP (Dan Walker) (04/08/88)

I have a 3B1 with a variable speed fan. I assume that this speed varies
with the temperature "sensed" inside the unit.

Q: Is there a way for software to read the temperature, or at least
the over-temp indicator?

Q: Is this a 12V fan or 110VAC?

Your help is appreciated. Thanks.

-- 
Dan Walker (N7GLK)                         If you can only turn left or right,
[ames, sun]...!oliveb!edge!walker          you're bound to turn wrong.

lenny@icus.UUCP (Lenny Tropiano) (04/10/88)

In article <1045@edge.UUCP> walker@edge.UUCP (Dan Walker) writes:
|>I have a 3B1 with a variable speed fan. I assume that this speed varies
|>with the temperature "sensed" inside the unit.
|>
|>Q: Is there a way for software to read the temperature, or at least
|>the over-temp indicator?
|>
There is no way that I know of currently to read the temp of the 3B1 without
connecting some sort of device to do so.  The overhead temp indicator doesn't
give any indications, it's hardware only.  My experience has been that this
has cause problems with the FANS.  When the fan sucks the dust in it drys
out the oils and hence at the lower speed sometimes it will come to a
halt and not move.  This causes extreme overheating and hardware failures.

If you can disconnect this "overheat" indicator it would be better. Is there
anyone who has actually done this.  I have replaced my AT&T fan with a
12VDC fan from Radio Shack (which I posted a while back).  I would like to
get full power to these fans, and I assume the circuit is holding back
power to the fans while the machine is cool...

|>Q: Is this a 12V fan or 110VAC?
|>
The fan inside the 3B1's is a 12VDC fan.

-Lenny
-- 
US MAIL  : Lenny Tropiano, ICUS Computer Group        IIIII  CCC U   U  SSS
           PO Box 1                                     I   C    U   U S
	   Islip Terrace, New York  11752               I   C    U   U  SS 
PHONE    : (516) 968-8576 [H] (516) 582-5525 [W]        I   C    U   U    S
TELEX    : 154232428 [ICUS]                           IIIII  CCC  UUU  SSS 
AT&T MAIL: ...attmail!icus!lenny  
UUCP     : ...{mtune, ihnp4, boulder, talcott, sbcs, bc-cis}!icus!lenny