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    T640 Switch Interface Boards (SIBs) LEDs

    Three LEDs—ACTIVE, OK, and FAIL—are located on the SIB faceplate and display the status of the SIB.Table 1 describes the functions of the LEDs. If all three LEDs are off, the SIB is not receiving power. The OK and FAIL LEDs are replicated on the craft interface.

    Table 1: SIB LEDs

    Label

    Color

    State

    Description

    ACTIVE

    Green

    On steadily

    SIB is in active mode.

    OK

    Green

    On steadily

    SIB is functioning normally.

    Blinking

    SIB is starting up.

    FAIL

    Yellow

    On steadily

    SIB has failed.

    Published: 2013-08-20