Severity Levels

Critical (CR), Major (MJ), Minor (MN), Not Alarmed (NA), Not Reported (NR)

Default: Minor (MN)

ASAP Type

System

AID Type

Fuse

Date

Month/day/year that the condition was detected

Time

Hour:minute:second that the condition was detected

Probable Cause

PWR (Power failure)

Effect on Service

NSA

Alarm Entity Type

COM

Description

−48V power/fuse FB failed

Probable Cause

A −48 volt power feeder "B" has either failed or been interrupted, or circuit breaker "B" on the shelf has tripped.

Visible Indication

Lighted CR, MJ, or MN LED on the SYSCTL faceplate (when the severity level is provisioned to Critical, Major, or Minor, respectively)

Action

Proceed to Procedure 5-2: Clear "−48V power/fuse FA or FB failed" alarm.