Lenovo 8332 manual Cooling fan LEDs, Drive carrier module LEDs, Rear panel LED, Server board LEDs

Cooling fan LEDs

An amber LED incorporated in each cooling fan monitors its status. Constant On indicates a fault condition. .

Drive carrier module LEDs

Disk drive status is monitored by a green LED and an amber LED mounted on the front of each drive carrier module. The conditions for each LED are defined in “Drive carrier module faults” on page 30.

Rear panel LED

Table 8. Rear panel status LED

Enclosure ID LED

Blue (when activated)

Activated by push button on the front operator's panel, or by system software. Used to identify a server from among several servers.

Server board LEDs

Server board LEDs consist of I/O panel status LEDs and I/O panel NIC LEDs.

I/O panel status LEDs

The server board I/O panel contains a number of diagnostic LEDs, whose functions are summarized in the following table. Refer to your server board documentation for full details of each LED state.

Table 9. Server board status LEDs

LED	Color		Function
System status LED	v	Green	v	System OK
	v	Off	v	AC power off
	v	Alternating green/amber	v	System not ready
	v	Amber	v	Critical fault
	v	Green blink	v	System degraded
	v	Amber blink	v	Non-fatal alarm, system
				likely to fail
4 x power-on self test (POST)	Off		System running normally
LEDs
			The POST LEDs toggle
	*Amber		between red, green, amber,
			and Off at boot up.
			*(Lit amber only if a
			failure occurs)

I/O panel NIC LEDs

The Network Interface Controller (NIC) LED states are summarized in the following table. Refer to your server board documentation for full details of each state.

Chapter 5. Troubleshooting and problem solving 25