3Com CoreBuilder 2500 Getting Started Manual page 68

7-4 C 7: T
HAPTER ROUBLESHOOTING THE
Table 7-3 Troubleshooting Abnormal Module Status LED Activity
LED Status
Board Error LED lights yellow
Error LED (Port Status) lights yellow
S
YSTEM
Possible Sources of the Problem
Module failure
System does not recognize a
connection to the port
Cabling not fully attached to the
port
Cabling to the port is dirty (on
FDDI modules)
Cable to the port is faulty
Try this...
Replace the module with a new one.
1 Verify that all cables are firmly plugged into both the
system's affected port and the attached device.
2 Verify that the cables are clean. See the section
Dirty Fiber Optic Ports and Connectors" on page 7-7 for
more information.
3 Test for faulty cables.
When the problem is corrected, the Active LED (port status)
lights green.
4 Contact 3Com Technical Support or your service
representative if the port status Error LED remains yellow.
"Cleaning