Nortel Networks Instant Internet 400 Unit - Manual (Page 47)

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Setting Up the BayStack Instant Internet 400 Unit
Chapter 5
LEDs: support and diagnostic functions
This chapter describes how the LEDs work on your Instant Internet 400 unit and
how you can use them to interpret activity on your unit.
Interpreting LEDs
On the front panel of the Instant Internet unit, the nine LEDs indicate failures,
configuration information, and operational status. When the unit is turned on, it
displays any failures as red lights.
LEDs at power-up sequence
If any failure is found during the power-up sequence, the Power LED glows
amber, and one or more of LEDs 1 through 8 glow red. This failure indicates a
hardware problem. Call the Nortel Networks Technical Solutions Center
(
page 20 ) for assistance.
Caution: During normal operation, the Power LED glows green, except
when updating the internal flash ROM. While updating the flash memory,
the Power LED glows amber. This amber LED indicates that it is not safe
to turn off the unit without potentially damaging the contents of flash
memory.