# Status indicator LEDs

The AG 2000C board has indicators (LEDs) on the end bracket of the board as shown in the following illustration:

LEDs on the end bracket

The following table describes each of the LEDs:

LED | Description
--- | ---
DIAG | The LED is on after the board is booted.
HBAT | LED on verifies -48 V DC is available to the board from the external power supply (for future use).
LBAT | LED on verifies -30 V DC is available to the board from the external power supply (for future use).
Hot Swap | Illuminates when it is safe to remove the AG 2000C board from the system. The LED illuminates under one of the following conditions: If the board is fully inserted when the backplane is powered up, the blue LED momentarily flashes. This is a normal part of the initialization process. After opening the handles (during the extraction process), the LED illuminates to indicate that it is safe to remove the board. Do not remove the board until the LED illuminates. This occurs only if Hot Swap software is present. If the LED remains illuminated during insertion of a board, the board failed to successfully perform its primary hardware initialization. While it is safe to remove the board, this condition indicates a problem. For more information about Hot Swap, refer to the NMS OAM System User's Manual.