Nortel Networks Instant Internet 400 Unit manual Chapter LEDs support and diagnostic functions

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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.

Setting Up the BayStack Instant Internet 400 Unit