Milan Technology MIL-SM4804G manual Appendix a Troubleshooting, Diagnosing Switch Indicators

Appendix A: Troubleshooting

Diagnosing Switch Indicators

	Table A-1 Troubleshooting Chart
Symptom	Action
PWR LED is Off	• Check connections between the switch, the power cord and the wall
	outlet.
	• Contact your dealer for assistance
PWR LED is Amber	• Internal power supply has failed. Contact your local dealer for
	assistance.
Diag LED is Amber	• Power cycle the switch to try and clear the condition
	• If the condition does not clear, contact your dealer for assistance
Stack Master LED is Flashing	• The stack has not completed its initial configuration. Wait a few
Amber	minutes for the process to complete.
	• If flashing continues, check that the Master Select button is pressed in
	on only one switch.
	• Check that all stacking cables are properly connected.
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.
	• If the switch is installed in a rack, check the connections to the
	punch-down block and patch panel.
	• 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	Amber	Internal power functioning normally; RPS plugged in.
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-1