Intel MPCBL0001 manual LED Status, Health LED, OOS Out Of Service LED, Hot-Swap LED

Hardware Management Overview

3.14LED Status

3.14.1Health LED

The MPCBL0001 SBC supports one bicolor health LED to indicate the SBC’s health status, i.e., whether a fault or error condition has been detected on the SBC. This LED is mounted on the front faceplate and driven by the onboard IPMC. The health LED will only be driven to an error condition (red) if there is a critical or non-recoverable (major or critical in AdvancedTCA parlance) condition active on the SBC. Alarms could include exceeding sensor thresholds for temperature and on-board logic voltages. The health LED remains red until the sensors return to a normal operating value. Hard-drive failures, boot failures, etc. are not considered critical/major IPMI states, so the IPMC does not explicitly set the health LED in these cases.

Note:	The LED's error state color defaults to red, but the color can be overridden using PICMG 3.0-
	defined commands.
Table 26.	Health LED
	LED Status (right)	Meaning
	Solid Green	Healthy
	Solid Amber/Red	Fault or error condition

The default color and override capabilities of the LED follow the LED management requirements defined in Section 3.2.5 of the PICMG 3.0 Specification.

3.14.2OOS (Out Of Service) LED

The MPCBL0001 SBC supports one bicolor “OOS” LED, mounted on the front faceplate. The LED can be driven to display a red or amber color. When this LED is lit, it indicates that the board is not in service. Its back-end (payload) power could be OFF or ON. Often the OOS state is entered when a critical fault occurs on the board. In this state, the back-end (payload) power is turned OFF. A board could be in this state when its back-end power is OFF but healthy, or when a board is fully powered but not yet deployed, or during the reset process.

Note: Do not extract a board unless the Hot Swap LED is lit.
Table 27.	OOS LED (DS9)
	LED Status (left)	Meaning
	Off	In service
	Solid Amber/Red	Fault or error condition

The default color and override capabilities of the LED follow the LED management requirements defined in Section 3.2.5 of the PICMG 3.0 Specification.

3.14.3Hot-Swap LED

See Section 3.9, “Hot-Swap Process” on page 51.

64	Intel NetStructure® MPCBL0001 High Performance Single Board Computer
	Technical Product Specification