Nortel Networks 8010co - Manual (Page 72)

72 Chapter 3 Problem solving
312755-G Rev 00
The (red)
CRITICAL indicator
is on steady. Failover from Master CPU
to the second (redundant)
CPU. This action is
preceded by the
CRITICAL indicator
blinking two times and
then turning off after the
redundant CPU becomes
operational. After the Redundant CPU becomes operational, the (red)
MAJOR indicator lights to indicate loss of the master CPU
(see previous symptom).
The maximum CPU
operating temperature,
50°C (122°F), has been
exceeded. Check to see that nothing is blocking the air flow to the
CPU; if airflow is present, power down the system and
replace the CPU.
See the appropriate product chassis installation manual,
for replacement and removal of system components.
The CPU subsystem has
detected a fault. Locate and remove the faulty card.
See the appropriate product chassis installation manual,
for replacement and removal of system components.
A line card is booting and
is not yet operational. Wait until the line card finishes booting; the fault indicator
goes out when booting is complete.
A line card has failed. Locate and hot swap the faulty line card.
See the appropriate product chassis installation manual,
for replacement and removal of system components.
A circuit breaker
LED on the BIP
front panel is on
(red). The
associated circuit
breaker is tripped
(off), and the (red)
MAJOR indicator is
on steady. A circuit breaker has
tripped due to an
overcurrent condition with
the associated power
supply. Locate and replace the faulty power supply.
See the appropriate product chassis installation manual,
for replacement and removal of system components.
Table 5 Corrective actions (continued)
Symptom Probable cause Corrective action