Cisco Systems XR 12410 manual Troubleshooting a DC PEM

Chapter 4 Troubleshooting the Installation

Troubleshooting the Power Subsystem

Troubleshooting a DC PEM

Use the following procedure to troubleshoot a 2800 W DC PEM if it is not operating properly.

Step 1 Make sure the PEM is seated properly:

•Eject and reseat the PEM. Make sure:

–The captive screw on the ejector lever is tightened securely.

–The power switch is set to the on (1) position.

Step 2 Check the PEM status indicators:

•F1LO (feeder 1 low) (flashing yellow)—Indicates that input connections to the PDU (feeder 1) are loose or not connected, or the input voltage is below the minimum. This indicator remains off during normal operation. Make sure that:

–Power cords are securely attached to their PDU terminal studs.

–Power cords are securely attached at the DC source end.

–The source DC circuit breaker is switched on.

If the indicator is still flashing after you perform the above checks, replace the power supply.

•F2LO (feeder2 low) (flashing yellow)—Indicates that input connections to the PDU (feeder 2) are loose or not connected, or the input voltage is below the minimum. This indicator remains off during normal operation. Make sure that:

–Power cords are securely attached to their PDU terminal studs.

–Power cords are securely attached at the DC source end.

–The source DC circuit breaker is switched on.

If the indicator is still flashing after you perform the above checks, replace the power supply.

•RPF1 (reverse polarity feeder 1) (flashing yellow)—The (feeder 1) PDU is miswired. For wiring instructions see the “Connecting Power to a DC-Powered Router” section on page 3-46. This indicator remains off during normal operation.

	Cisco XR 12410 Router Installation Guide
4-10	OL-13832-01