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4
TROUBLESHOOTING
This chapter describes troubleshooting procedures for the
CoreBuilder
™
5000 Ethernet 24-Port Module. Information on
troubleshooting will assist you in verifying the module's operation.
Typical fault conditions are addressed in this chapter.
Troubleshooting Diagnostic features are covered in Table 3-3. Tables 4-1, 4-2, and 4-3 in
this chapter cover fault conditions and troubleshooting suggestions for
the module. This chapter is divided into the following parts:
■ Troubleshooting With the Module Status LED
■ Troubleshooting With the Status LEDs
■ Troubleshooting With the Activity LEDs
■ Technical Assistance
Troubleshooting
With the Module
Status LED
In certain situations, the module status LED may not light. Table 4-1
outlines both the possible reasons for this problem and some probable
solutions.
Table 4-1 Troubleshooting with the Module Status LED
LED State Possible Problem Troubleshooting Solutions
Off Hub power is off Check the controller module power
LEDs.
The 24-Port module is faulty Try a different 24-Port module.
The hub does not have
enough available power for
a new module installation.
Use the SHOW POWER BUDGET
management command to ascertain
available power in the hub. (See the
Distributed Management Module
Commands Guide for details.)