3Com 3C17709 Getting Started Manual page 56

56 C 4: P
HAPTER ROBLEM
S
OLVING
6 Power cycle the unit. If a further thermal shutdown trap is received,
return the unit.
An SNMP fan fail trap and email is received
1 If the fail trap is for the front fan tray:
a Open the door where the bulge is at the front of the Switch.
b Remove the screws securing the fan tray using a suitable screwdriver
c Gently slide the fan tray from the Switch
If the fail trap is for the rear fan tray:
a Remove the screws securing the fan tray using a suitable screwdriver
b Gently slide the fan tray from the Switch
CAUTION: A fan tray can be temporarily removed and replaced while the
system is running without impacting operations. The system must not be
left with either fan tray removed for more than two minutes or damage
to the product may be caused.
2 Check that the air vents are not obstructed.
3 Replace the fan tray. If a further fail trap is received, install a replacement
identical fan tray.
4 If a fan fail trap is still received, return the unit.
WARNING: Care must be taken when removing the fan tray as the fan
blades may continue to spin for a short time after removal. Keep fingers
clear.
Unit fails, no SNMP fan fail trap or SNMP thermal shutdown trap is
received
1 Power cycle the unit. To do this, remove and reconnect the AC mains
supply (if two PSU's are fitted, remove and reconnect both at once).
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 C.