Installation Guide for cl Modules 2006-03

15
Troubleshooting
Troubleshooting
One of the primary tools for troubleshooting the switch modules are the LEDs
on the front of the switch and on the modules. Refer to “LED Behavior” on
page 9 for a description of the normal LED behavior. Also, refer to the switch
Installation and Getting Started Guide for more detailed troubleshooting
information for the switch.
LED Error Indicators:
Diagnostic Tips:
See the table on the next page to diagnose the LED error indicators in the
previous table.
Switch LEDs Module LEDs
Fault Test Module
Status
Module (Mdl)
Power
Module (Mdl)
Fault
Link Activity Diagnostic
Tips
Blinking
†
Blinking
†
Blinking
†
Blinking
†
➊
Blinking Blinking Blinking On Off Blinking Off
➋
Off Off On Off with cable
connected
➌
Blinking On Blinking Off Blinking
*
*
➍
Blinking Blinking Blinking
➎
†
The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
††
The fast blinking behavior is an on/off cycle once every 0.8 seconds, approximately.
* This LED is not important for the diagnosis.