Installation guide

Chapter3 Troubleshooting
Diagnosing Problems
3-6
Catalyst 3500 Series XL Hardware Installation Guide
78-6456-03
System LED is amber on the
Catalyst 3524-PWR XL.
•
Internal fan fault detected.
• Switch is overheating.
• Nonfatal or fatal POST error
detected.
• Either check the switch
itselforusetheshow env
command to check if a fan
on the switch has failed.
The
Catalyst 3524-PWR XL
switch can operatenormally
with one failed fan. Replace
the switch at your
convenience.
• Use the show env command
to check if an
overtemperature condition
exists. If it does:
– Place the switch in an
environment that is
within 32 to 113°F
(0 to 45°C).
– Make sure fan intake
and exhaust areas are
clear.
If a multiple-fan failure is
causing the switch to
overheat, replace the
switch.
• Use the show POST
commandtoseewhich
POST test failed.
Cisco IP Phone fails to power on
when connected to a
Catalyst 3524-PWR XL switch.
Improper cabling. Make sure the switch is
connected to the LAN-to-phone
jack on the Cisco IP Phone.
Table 3-2 Common Problems and Their Solutions (continued)
Symptom Possible Cause Resolution