3com 2500 Quick Setup Guide

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Related Maintenance Procedures
7-5
Related Maintenance Procedures
During system troubleshooting, you might have to 
perform the minor maintenance procedures 
described in this section. For other assistance, 
contact 3Com Technical Support as discussed in 
Checking the CoreBuilder System Fuses
If your CoreBuilder system does not power up, 
check the fuses. 
Two fuses are located inside the AC power switch 
assembly on the back panel of the chassis. The fuses 
are mounted in removable cartridges.
WARNING: Before beginning this procedure, 
power down and unplug the system to prevent 
electric shock or system damage, or both. 
You need a small, flat-blade screwdriver to complete 
this procedure.
Removing the Fuse
To remove the fuse, take these steps:
1
Insert the small flat-blade screwdriver into the slot at 
the top of the power switch assembly and flip down 
the hinged panel covering the fuse cartridges. See 
Figure 7-1   Accessing the AC Power Fuses
Hinged panel
Power switch
assembly
Fuse
cartridge