Hardware Troubleshooting Flowchart - Cisco 10000 Series Troubleshooting Manual

Hardware Troubleshooting Flowchart

A malfunctioning blower or blocked air passages could result in these alarms asserting at lower ambient
temperatures.
For customer sites where ambient temperatures are frequently close to 40 degrees C, and/or for
customers who do not wish to receive these alarms, the minor and major thresholds can be adjusted.
Hardware Troubleshooting Flowchart
Use
Figure 1-1
series router to allow the passage of IP traffic. At each main point of the flowchart, there are pointers to
the chapters in this guide that describe how to troubleshoot individual pieces of hardware.
This flowchart does not address software configuration problems.
Note
Figure 1-1
Cisco 10000 Series Router Troubleshooting Guide
1-4
Figure 1-1 to determine which component of your Cisco 10000 series router is malfunctioning.
describes a series of hardware dependent startup events that must take place for a Cisco 10000
Hardware Troubleshooting Flowchart
Turn
on
PEM
No
*Miswire
LED
off
?
Yes
PEM
No
Troubleshoot
Power OK
LED on
?
Yes
PRE
No
Status
LEDs OK
and restart
?
Yes
No
Line card
LEDs on
and restart
?
Yes
System
startup
successful
Chapter 1
Correct
input
wiring
PEM
No
Power OK
PEM
LED on
?
Yes
Reseat PRE
No
PRE
status LEDs
OK?
Yes
See appropriate
line card fault
Line
Reseat
No
card LEDs
line card
OK
?
Yes
Basic Troubleshooting Tasks and Startup Issues
See section
"PEM Faults"
See section
"PRE Module
Faults"
section
Obtain
technical
assistance
OL-0439-02