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System-board LEDs

The following illustrations show the light-emitting diodes (LEDs) on the system board.

Figure 1. System-board LEDs
System-board LEDs
Table 1. System-board LEDs
1 XCC heartbeat LED (green)2 ME heartbeat LED (green)
1 XCC heartbeat LED (green) behavior:
  • Blinking slowly (1 Hz, about one flash per second): XCC is functioning.
  • Blinking at other speed or always on: XCC is at the initial phase or malfunctioning.
  • Off: XCC is malfunctioning.
2 ME heartbeat LED (green) behavior:
  • Blinking: PCH ME is functioning.
  • On: PCH ME is malfunctioning.
  • Off: PCH ME is malfunctioning.