Diagnosing Power Problems With The Leds; Table A-2 Power/Rps Leds - SMC Networks TigerStack II SMC8848M Installation Manual

T
ROUBLESHOOTING
Symptom
Stack Link LED is
Flashing Green/Amber
Link LED is Off

Diagnosing Power Problems with the LEDs

The Power and RPS LEDs work in combination to indicate power status
as follows.
Power LED RPS LED
Green Green
Green Amber
Green Off
Amber Green
Off Off
A-2
Table A-1 Troubleshooting Chart (Continued)
Action
• The uplink/downlink has failed.
• 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.
• 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.

Table A-2 Power/RPS LEDs

Status
Internal power functioning normally; RPS is present.
Internal power functioning normally; RPS plugged in but
faulty.
Internal power functioning normally; RPS not plugged in.
Internal power faulty; RPS delivering power.
Both internal power and RPS unplugged or not functioning.