3com 5102B-EE Manual De Usuario

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5 - 2 ONline Ethernet Bridge Module Installation and Operation Guide
.
PowerUp Self-Test
Under normal conditions, the TEST LED stays on during the power-up 
self-test (about 20 seconds) and then turns off.  If the TEST LED continues 
blinking, refer to Table 5-2 for possible solutions
Table 5-1.  Applying Power Suggestions
Problem
Troubleshooting Suggestions
All indicators are off.
Check that the concentrator is receiving power.
Press the LED check button on the Controller 
Module to verify that the LED is not burned out.  
All the LEDs should light.
Verify that the Bridge Module is installed 
correctly by following the installation instructions 
in Chapter 2.
Pull the Bridge Module out and then slide it back 
in, or install the module in another pair of 
concentrator slots.
Press the Reset button on the Bridge Module.
Try downloading a new copy of the firmware as 
described in Chapter 6.  If downloading firmware 
doesn't solve the problem, contact 3Com 
Customer Support as outlined in the end of this 
chapter.