HP J3188A manual LED Operation

Troubleshooting

LED Operation

LED Operation

The tables on the following pages list the hub’s LEDs, their possible states, and diagnostic tips to resolve any error conditions.

LED patterns indicating problems						Diagnostic Tips
Power	Coll	Port LED	Sec	Fault	RPS
OFF	*	*	*	*	*	Verify that the power cord is plugged
						into an active power source and to the
						hub. Make sure these connections are
						snug. Try power cycling the hub by
						unplugging and plugging the hub back
						in.	Troubleshooting
						If the Power LED is still not on, verify the
						AC source works by plugging another
						device into the outlet. Or try plugging
						the hub into a different outlet or try a
						different power cord.
						If this condition persists, call your
						HP-authorized LAN dealer or HP
						representative for assistance.
ON	*	OFF	*	*	*	Check cabling on the indicated port all
						the way out to the device attached to
						that port. Faulty wiring or a bad
						connection could exist somewhere in
						that connection.
						The end node or hub attached to the
						port is off.
						The port may be disabled. Use the
						ASCII console or management
						application to enable the port.
						If Port 16, check the position of the
						MDI/MDI-X switch. See the figure in
						chapter 1 that details the MDI/MDI-X
						switch.
ON	ON	*	*	*	*	Very frequent collisions are occurring,
						which could indicate a network fault or
						improperly terminated cable.
*This LED is not important for the diagnosis.

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