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    T4000 Craft Interface LEDs

    Figure 1 shows the LEDs on the craft interface.

    Figure 1: Front Panel of the Craft Interface

    Front Panel of the Craft
Interface

    Alarm LEDs

    Two large alarm LEDs are located at the upper left of the craft interface. The circular red LED lights to indicate a critical condition that can result in a system shutdown. The triangular yellow LED lights to indicate a less severe condition that requires monitoring or maintenance. Both LEDs can be lit simultaneously.

    A condition that causes an LED to light also activates the corresponding alarm relay contact on the Connector Interface Panel (CIP). The LCD on the craft interface reports the cause of the alarm.

    To deactivate red and yellow alarms, press the button labeled ACO/LT (for “alarm cutoff/lamp test”), which is located to the right of the alarm LEDs. Deactivating an alarm turns off both LEDs and deactivates the device attached to the corresponding alarm relay contact on the CIP. However, the LCD continues to report the alarm message until you clear the condition that caused the alarm.

    Table 1 describes the alarm LEDs and alarm cutoff button in more detail.

    Table 1: Alarm LEDs and Alarm Cutoff/Lamp Test Button

    Shape

    Color

    State

    Description

    Red

    On steadily

    Critical alarm LED—Indicates a critical condition that can cause the router to stop functioning. Possible causes include component removal, failure, or overheating.

    Yellow

    On steadily

    Warning alarm LED—Indicates a serious but nonfatal error condition, such as a maintenance alert or a significant increase in component temperature.

    Alarm cutoff/lamp test button—Deactivates red and yellow alarms. Causes all LEDs on the craft interface to light (for testing purposes), when pressed and held.

    FPC LEDs

    Each FPC slot has two LEDs that indicate its status. The FPC LEDs, labeled FPC0 through FPC7, are located along the bottom of the craft interface.

    Table 2 describes the functions of the FPC LEDs.

    Table 2: FPC LEDs

    Label

    Color

    State

    Description

    FAIL

    Red

    On steadily

    FPC has failed.

    OK

    Green

    On steadily

    FPC is functioning normally.

    Blinking

    FPC is starting up.

    Host Subsystem LEDs

    Each host subsystem has three LEDs, located on the upper right of the craft interface, that indicate its status. The LEDs labeled HOST0 show the status of the Routing Engine in slot RE0 and the CB in slot CB0. The LEDs labeled HOST1 show the status of the Routing Engine in slot RE1 and the CB in slot CB1.

    Table 3 describes the functions of the host subsystem LEDs.

    Table 3: T4000 Host Subsystem LEDs

    Label

    Color

    State

    Description

    FAIL

    Red

    On steadily

    Host is offline.

    OK

    Green

    On steadily

    Host is online and is functioning normally.

    MASTER

    Green

    On steadily

    Host is functioning as the master.

    SIB LEDs

    Each SIB has two LEDs on the craft interface that indicate its status. The SIB LEDs, labeled SIB0 through SIB4, are located on the upper right of the craft interface. The ACTIVE LED on the SIB faceplate is not replicated on the craft interface.

    Table 4 describes the functions of the SIB LEDs.

    Table 4: SIB LEDs on the Craft Interface

    Label

    Color

    State

    Description

    FAIL

    Red

    On steadily

    SIB has failed.

    OK

    Green

    On steadily

    SIB is functioning normally.

    Published: 2013-08-28