Nortel Networks 8010co manual Or a problem in circuits that are not essential to

					Chapter 3 Problem solving 69
Table 4 BIP LEDs and indicators (continued)
Item	Label/Icon	Type	Color/State	Description
4	POWER	Indicator	White/On steady	Power indicator—The external DC power is
				available to the BIP.
5	CRITICAL	Indicator	Red/On steady	Critical fault indicator—Indicates that a severe
				service-affecting condition has occurred that
				requires immediate corrective action. Common
				causes for this type of fault condition include:
				•	Line card failure
				•	Temperature fault
				• CPU fault when only one CPU is installed
6	MAJOR	Indicator	Red/On steady	Major fault indicator—Indicates that the system
				hardware or software has identified a serious
				disruption of service or that an important circuit
				failure has occurred.
				Common causes for this type of fault condition
				include:
				• CPU fault when two CPUs are installed
				• Two fan trays are faulty
				• A power supply circuit breaker has tripped due
					to an overcurrent condition
				• Two power supplies are faulty
7	MINOR	Indicator	Yellow/On steady	Minor fault indicator —Indicates a problem that
				does not have a serious effect on customer service,
				or a problem in circuits that are not essential to
				device operation.
				Common causes for this type of fault condition
				include:
				• Shelf alarm cables not installed or not
					connected properly.
				• Alarm module jumpers configured incorrectly.
				• One power supply is faulty
				• One fan tray is faulty

If you need more help, go to the next section, “Diagnosing and correcting the problem” on page 70.

Installing the Breaker Interface Panel for the Ethernet Routing Switch 8010co Chassis