3Com 3812 - SuperStack 3 Switch Getting Started Manual page 48

48 C 4: P
HAPTER ROBLEM
S
OLVING
If a fan failure warning message is generated:
1 Power off the unit.
2 Check that the air vents are not obstructed.
3 Power cycle the unit. To do this, remove and reconnect the AC mains
supply.
4 If a fan fail trap is still received, return the unit.
An SNMP thermal shutdown trap and email is received
1 Power off the unit.
2 Check that the air vents are not obstructed.
3 Check that the ambient temperatures and environmental conditions meet
those specified in
4 Power cycle the unit. If a further thermal shutdown trap is received,
return the unit.
Unit fails or SNMP thermal shutdown trap is received
1 Power cycle the unit. To do this, remove and reconnect the AC mains
supply.
2 Check the command line interface (system summary command) to
determine whether a thermal shutdown has occurred.
3 If no, return the unit:
If yes, check that:
The air vents are not obstructed.
■
The ambient temperatures and environmental conditions meet those
■
specified in Appendix
4 Power cycle the unit. If a further thermal shutdown occurs, and all
environmental conditions are satisfactory, return the unit to 3Com.
Appendix C.
C.