Lenovo 3823, 3821, 3822, 3719 manual System-board LEDs

System-board LEDs

The following illustration shows the LEDs on the system board.

PCI slot 1 error LED	Battery error LED
PCI slot 2 error LED	System-board error LED
PCI slot 3 error LED	VRM fail LED
HS heartbeat LED	CPU 1 error LED
PCI slot 4 error LED	DIMMs 1 - 8 error LEDs (starting
	from the bottom)
PCI slot 5 error LED	DIMMs 9 - 16 error LEDs (starting
	from the bottom)
PCI slot 6 error LED	CPU 2 error LED
IMM heartbeat LED	CPU mismatch LED

The system board is equipped with a PCI extender card that provides either one or two additional expansion slots. The following illustration shows the LEDs on the PCI

Chapter 6. Locating Server Controls and connectors 135