DEC PORTswitch 900FP, Руководство по установке и настройке, Страница: 87 / 124

LED Descriptions
Problem Solving 5–5
Normal Powerup
When power to the module is initially turned on, the following events
occur:
Stage What Happens
1
The Power LED lights and remains lit. All other LEDs
light for a few seconds and then turn off. This event verifies
that the individual LEDs are operational (defective LEDs do not
light).
2 The module initiates its built-in self-test.
3 After the successful completion of the self-test (within one
minute), the Module OK LED lights and remains lit.
4 The remaining LEDs indicate their operational status.