Cisco XR 12410 - Manual (Page 160)

Chapter 4 Troubleshooting the Installation
Troubleshooting the Processor Subsystem
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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
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Troubleshooting Using the Line Card Alphanumeric Display
You can analyze the alphanumeric displays to isolate a problem with the line card.
The two rows of the alphanumeric display are powered separately:
• The upper row receives power from the DC-to-DC converters on the line card.
• The lower row is powered directly from the MBus on the line card 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 or lower row is on, but the power modules and the blower
modules are operational, the line card 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 line card by ejecting it from the chassis backplane and then
reseating it.
• If both the upper and lower rows are operating, check the status messages (see
Table 4-7 ).
When the DC-to-DC converters are powered-on by the MBus module, the line
card processor begins the boot process and displays various status messages.
Some messages appear briefly; while others appear for several seconds.
Table 4-7 Troubleshooting Using Alphanumeric Display Messages
Display
1
Meaning Source
MROM
nnnn
MBus microcode executing; where nnnn is the microcode
version number. MBus controller
LMEM
TEST
Low memory on the line card is being tested. Line card ROM
monitor
LROM
RUN
Low memory test is complete. Line card ROM
monitor
BSS
INIT
Main memory is being initialized. Line card ROM
monitor