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Cisco uBR10012 Universal Broadband Router Troubleshooting Guide
OL-1237-01
Chapter 1 Basic Troubleshooting Tasks and Startup Issues
Cisco uBR10012 System Startup Sequence
Figure 1-1 Hardware Troubleshooting Flowchart
Cisco uBR10012 System Startup Sequence
Table 1-1 describes the visible sequence of events that occur during a typical Cisco uBR10012 power up.
Correct
input
wiring
Reseat
PRE
and restart
Reseat
line card
and restart
System
startup
successful
Obtain
technical
assistance
*Miswire
LED
off
?
PEM
Power OK
LED on
?
PRE
Status
LEDs OK
?
PEM
Power OK
LED on
?
PRE
status LEDs
OK?
Line
card LEDs
OK
?
No
Yes
Yes
No
No
Yes
Yes
Yes
No
No
No
Yes
No
Yes
Line card
LEDs on
?
Reseat
TCC+
ICC+
Status
LEDs OK
?
ICC+
status LEDs
OK?
No
Yes
No
Yes
Troubleshoot
PEM
See section
"PEM Faults"
See section
"PRE Module
Faults"
See section
"Troubleshooting
TCC+"
See appropriate
line card fault
section
Turn
on
PEM
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