Cisco 10008 - Manual (Page 44)

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10
Troubleshooting Installation Problems
This section contains general troubleshooting information to help you solve problems you might encounter during the
installation of the system. For any problems not covered in this section and for more detailed troubleshooting information, see
the
Cisco 10000 Series Internet Router Troubleshooting Guide .
General Troubleshooting Tips
All Cisco 10008 field-replaceable units (FRUs) are hot-swappable. Procedures for removing and replacing the FRUs can be
found in the
Cisco 10000 Series Internet Router Troubleshooting Guide .
Table 4 lists general FRU fault symptoms and recommendations.
Table 4 General Troubleshooting Tips
Symptom Steps to Take
System fails to power on Check that:
• All power cords are properly connected to the Cisco 10008 router and at the power
connection end.
• The PEM power switches are in the On position.
– For DC PEMs, the POWER LED should be on (green).
• The blower module is fully inserted (FANS OK LED is on [green]).
System fails to boot up properly If the system has power, check the FAIL LED on the PRE and any information on the
alphanumeric display. If the FAIL LED is on, see the
Cisco 10000 Series Internet Router
Troubleshooting Guide .
DC PEM problem • If the FAULT LED is on, see the Cisco 10000 Series Internet Router
Troubleshooting Guide.
• If the MISWIRE LED is on, the –48V and return (RTN) wires are reversed. Power
off the PEM and reconnect the wires correctly (see the
“Connecting DC Power to
the Cisco 10008 Router” section on page 19 ).
System experiences a critical alarm
(CRITICAL LED on the PRE is on) Enter the show facility-alarm status command at the console.
System experiences a major alarm
(MAJOR LED on the PRE is on) Enter the show facility-alarm status command at the console.
System experiences a minor alarm
(MINOR LED on the PRE is on) Enter the show facility-alarm status command at the console.
You cannot establish a console or
Telnet connection to the system For information about troubleshooting Ethernet connections, see the “Troubleshooting
Ethernet Connections” section on page 45 .
For information about troubleshooting the console port serial connections, see the
“Troubleshooting the Console Port Serial Connection” section on page 46 .
Fan failure If a FAN FAILURE LED lights, perform the following steps:
• Reseat the blower module (see the Cisco 10000 ESR Blower Module Installation ).
• Remove the rear safety cover and be sure that the blower module cable is connected
securely (see the
Cisco 10000 ESR Blower Module Installation ).
System overheats See the Cisco 10000 Series Internet Router Troubleshooting Guide for additional
information.