Product specifications

Normal Power-Up
A-2 Problem Solving
Normal Power-Up
When the module’s power is initially turned on, the following events occur:
Refer to Table A-1 for a list of states that are possible for each of the module's LEDs.
For detailed information on the cards LEDs, refer to either the 100 Mb/s Fast Ethernet
Modular Media Interface Cards Installation manual or the FDDI Modular Media
Interface Cards Installation manual.
Event Description
1 The module's Power LED lights as soon as power is applied to the unit.
2 The module initiates its built-in self-test. Flashing Port State LEDs and
Port Activity LEDs indicate that the module is running various
subroutines as part of the self-test.
3 After the successful completion of self-test (within 3 minutes after
power is applied), the Module OK LED becomes lit.
4 The remaining LEDs now indicate their operational status.