From: Leah Lynch (leah_lynch@xxxxxxxxxx)
Date: Tue Apr 09 2002 - 20:06:50 GMT-3
Check this out:
http://www.cisco.com/univercd/cc/td/doc/product/core/cisagspl/agscfig/29509.
htm#20892
This looks like a power supply. From that document:
Troubleshooting an Air-Related Shutdown
Following is a troubleshooting aid to help isolate and find air temperature
and air flow problems. All other shutdowns caused by the CSC-ENVM involve
the power supply that will be readjusted or replaced (depending upon the
severity of the problem).
Troubleshooting Guidelines
The AGS+ unit under test (UUT) is shut down; no LEDs are lit, no processing
activity is occurring, but the blower is still running. The last message
displayed on the console will indicate an air temperature problem, an air
flow problem, or a voltage problem.
Step 1 Determine if the error message indicates an air temperature or air
flow problem. If it is air temperature, go to step 2; if it is air flow, go
to step 3.
Step 2 For suspected air temperature problems, answer the following
questions:
Is the ambient room temperature less than 400C at all times?
Is the temperature of the air going into the air intake vent less than 400C?
Is there sufficient air flow through the AGS+ chassis?
Is there sufficient air flow within the rack or wiring closet?
Is the front access panel of the AGS+ chassis in place?
Is the air intake vent of the UUT isolated from the exhaust air of all other
chassis?
All answers in Step 2 should be yes. If not, correct the problem or contact
your service representative for additional assistance.
Step 3 For suspected air flow problems, answer the following questions:
Is there insufficient air going through the AGS+ chassis?
Is there any blockage in or around the air intake vent?
Is there any blockage in or around the air exhaust vent?
Are there multiple units installed in this rack configuration? If the answer
is yes, will turning off some or all of the other chassis (if possible)
allow the UUT to continue running?
Is there an air pressure differential between the air intake and exhaust
vents?
Is the exhaust air of the UUT recirculating to its own air intake port?
The appropriate response for the questions in Step 3 should be no. If not,
or if a problem cannot be resolved using these guidelines, contact your
service representative for additional assistance.
To help determine why the CSC-ENVM told the system to shut down, use the
show environment last command and look at the second block of information to
see the last environmental conditions before the shutdown occurred. The
specific test point indicating the failure will be appended with an asterisk
(*). Refer to the section "Displaying the Reason for the Last Environmental
Shutdown."
-----Original Message-----
From: Gregg Malcolm [mailto:greggm@sbcglobal.net]
Sent: Tuesday, April 09, 2002 3:01 PM
To: ccielab@groupstudy.com
Subject: OT: AGS+ Environmental
Gang,
Has anyone else experienced an AGS+ shutting itself down ? Mine just did,
had
to power cycle it and it's back up. It's cool where it is and there's no
obstruction to the fans. The fans are pushing air like a jet turbine (as
usual). Reason given for shutdown was airflow sensor. Maybe it's time to
give it a good cleaning. Where the heck is the airflow sensor anyway? I
cringe
every time I open it up tho. Very concerned it will never work again. I'm
sure I'm not the only one who feels that way about their AGS...
Gregg
Sh env last
r7#sh environment la
Environmental controller firmware version 2.0
Serial number is 00236319, calibrated on 5-23-91, by technician jj
Internal temperature measured 18.5(C), shuts down at 43.0(C)
Air flow appears good.
+5 volt line measured at 4.978(V)
+12 volt line measured at 11.943(V)
-12 volt line measured at -12.029(V)
-5 volt line measured at -5.031(V)
LAST Environmental Shutdown Measurements:
Internal temperature was 33.3(C)
Air flow sensor was FATAL*
+5 volt line was 4.957(V)
+12 volt line was 11.923(V)
-12 volt line was -12.019(V)
-5 volt line was -5.023(V)
r7#
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