Cisco 10000 Series Troubleshooting Guide

2-2
Cisco 10000 Series Router Troubleshooting Guide
OL-0439-02
Chapter 2 PEM Faults and Blower Failures
DC PEM Faults
Figure 2-1 illustrates the DC PEM and its indicators. Table 2 -1 describes the indicators.
Figure 2-1 DC PEM
Table 2-2 lists the DC PEM fault symptoms and corrective actions.
Table 2-1 DC PEM LEDs
LED Description
Power (green) PEM is powered on and is operational.
Fault (yellow) PEM is not operating correctly or the circuit breaker is in the off position.
Miswire (yellow) Input power cables are wired incorrectly and should be reversed.
30003
POWER
FAULT
MISWIRE
Table 2-2 DC PEM Fault Symptoms and Corrective Action
Fault Symptom Corrective Action
Green LED on PEM fails to
light
1. Make sure the circuit breaker on the PEM is turned on.
2. Make sure the PEM is properly seated and screwed in place.
3. Make sure power leads are properly connected to power connectors
on the backplane. If connections are loose or their polarity is
reversed, chassis does not receive power.
4. Check the external power source.
5. Move the PEM to the other PEM slot. If the PEM still fails, replace it.
PEM experiences problems
in one slot but operates
normally in a different slot
1. Ensure that the input power to both slots is correct.
2. If the problem persists, contact the Cisco TAC.
Fault LED is lit yellow
1. Check to see if the circuit breaker (on/off switch) has tripped. If it
has, return the switch to the on position.
2. Replace PEM with a known good replacement.
3. Contact the Cisco TAC.
Miswire LED is lit yellow If the MISWIRE LED is on, the power cables are reversed. Power off the
PEM and the external power source and reconnect the wires correctly.
See the Cisco 10000 Series Router Hardware Installation Guide.

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English