Network Technologies 900GV - Manual (Page 60)

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 LED states that are possible for each of the module.
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 three minutes after
power is applied), the Module OK LED becomes lit.
4 The remaining LEDs now indicate their operational status.