3com 3C16491 User Manual

Page of 94
Performing Spot Checks
21
Performing Spot Checks
At frequent intervals, you should visually check the 
Switch. Regular checks can give you an early warning of 
a possible failure; any problems can then be attended to 
when there will be least effect on users. 
3Com recommends periodically checking the items listed 
in Table 1.
Table 1   Items to Check
If you experience any problems operating the Switch, 
refer to “Troubleshooting” on page 73.
Cabling
Check that all external cabling connections 
are secure and that no cables are pulled 
taut.
Cooling fan
Where possible, check that the cooling fan 
is operating by listening to the unit. The fan 
is fitted near to the front right hand side of 
the unit (when viewed from the front).