SMC Networks SMC8848M manual Diagnosing Power Problems with the LEDs, Table A-2 Power/RPS LEDs

TROUBLESHOOTING

Table A-1 Troubleshooting Chart (Continued)

Symptom	Action
Stack Link LED is	• The uplink/downlink has failed.
Flashing Green/Amber	• For the indicated stack link, check that the stacking
	cables are properly connected. Replace the stacking
	cable if necessary.
	• Power cycle the switch to try and clear the condition.
Link LED is Off	• Verify that the switch and attached device are powered
	on.
	• Be sure the cable is plugged into both the switch and
	corresponding device.
	• Verify that the proper cable type is used and its length
	does not exceed specified limits.
	• Check the adapter on the attached device and cable
	connections for possible defects. Replace the defective
	adapter or cable if necessary.

Diagnosing Power Problems with the LEDs

The Power and RPS LEDs work in combination to indicate power status as follows.

		Table A-2 Power/RPS LEDs
Power LED	RPS LED	Status
Green	Green	Internal power functioning normally; RPS is present.
Green	Amber	Internal power functioning normally; RPS plugged in but
		faulty.
Green	Off	Internal power functioning normally; RPS not plugged in.
Amber	Green	Internal power faulty; RPS delivering power.
Off	Off	Both internal power and RPS unplugged or not functioning.

A-2