Cisco XR 12410 - Manual (Page 152)

Chapter 4 Troubleshooting the Installation
Troubleshooting the Processor Subsystem
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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
OL-17441-01
Troubleshooting Using the RP Alphanumeric Display
You can use the alphanumeric display to isolate a problem with the RP. The two
rows on the alphanumeric display are powered separately:
• The upper row receives power from the DC-to-DC converters on the RP.
• The lower row is powered directly from the MBus on the RP through the
chassis backplane.
– If the lower row is not operating, the MBus module may be
malfunctioning.
– If the MBus module is operating, the lower row could be on even if the
RP failed to powered on.
• If neither the upper nor the lower row is on, but the power modules and the
blower modules are operational, the RP may not be installed properly, or the
+5 VDC output from the chassis backplane is faulty.
– Make sure that the system is powered on.
– Initialize the RP by ejecting it from the chassis backplane and then
reseating it.
Caution The soft reset (NMI) switch is not a mechanism for resetting the RP and reloading
the Cisco software image. It is intended for software development use. To prevent
system problems or loss of data, use the soft reset switch only when instructed by
a Cisco certified service representative.
• If both the upper and the lower displays are operating, check the meaning of
the messages (see
Table 4-3 ).
When the DC-to-DC converters are powered-on by the MBus module, the
RP processor begins the boot process and displays various status messages.
Some messages appear briefly; while others appear for several seconds. If the
messages appear to stop at a particular point, the boot process may be halted.
– Make a note of the message.
– Turn off power to the router, then turn on the power again to reset the
router and start the boot process. If the router halts again, replace the RP
(see
“Removing and Replacing Cards from the Line Card and RP Card
Cage” section on page 5-38 ).