A-1

APPENDIX A
TROUBLESHOOTING

Diagnosing RPU Indicators

Table A-1 Troubleshooting Chart
Symptom Action
Power LED is Off • Internal power supply is disconnected.
• Check connections between the RPU, the power cord,
and the wall outlet.
• Contact Technical Support.
Link LED is Off • The port does not have a valid connection to a switch.
• Check connections between the RPU and the switch.
• Check that power is being supplied to the RPU.
Link LED is Flashing
Yellow
• There has been an RPU internal power failure.
• Contact Technical Support.
Activity LED is
Flashing Green
• The port has been shut down due to one of the following
conditions:
- The unit has detected an over-current condition.
- One or more of the unit’s fans have failed.
• Check if the Fan LED is off, which indicates a fan failure.
• Check that the attached switch does not require more than
150 W of power.
• Power cycle the RPU to clear the condition.
• If the condition persists, contact Technical Support.
Fan LED is Flashing
Yellow
• One or more fans are not operating properly.
• Replace the unit as soon as possible.