Nortel Networks 8010co manual Problem solving Corrective actions

72Chapter 3 Problem solving

Table 5 Corrective actions (continued)

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

312755-G Rev 00