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Troubleshooting the Power Subsystem
Troubleshooting a DC PEM
Step 1
Step 2
Cisco XR 12410 Router Installation Guide
4-10
Use the following procedure to troubleshoot a 2800 W DC PEM if it is not
operating properly.
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.
–
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
DC-Powered Router" section on page
normal operation.
Chapter 4
Troubleshooting the Installation
"Connecting Power to a
3-46. This indicator remains off during
OL-13832-01
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Table of Contents
Troubleshooting
