Nortel Networks 8010co manual Major

				Chapter 1 Overview 23
Table 1 Alarm module display LEDs (continued)
Item	Label/Icon	Type	Color/State	Description
5	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
				• Two power supplies are faulty
6	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

The alarm module can also be linked to other BIPs, and can provide visual and audible alarms to aisle alarms and to the central office (see “Central office alarms” on page 26).

Alarm support for the BIP is provided by the 8691SF or 8691omSF central processing unit (CPU) in the 8010co chassis. The following conditions in the 8010co chassis generate alarms:

•Power supply failure

•Fan failure

•Overheating

•Line card error

•Master CPU failure

For details about the 8691SF or 8691omSF Central Processing Unit (CPU), see the appropriate product chassis installation manual.

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