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Maintenance and Trouble Clearing
FJTU-320-515-480
1
Maintaining Equipment
1.1
Alarm/Status Identification
1.1.1
Summary
This procedure describes the identification of conditions that cause visible or
audible alarms. Once the technician is alerted to a condition by visible or audible
alarms, he can use alarm and status messages retrieved through the operations
support system (OSS) or craft interface to assist in isolating the cause of the
condition.
Fujitsu recommends that all FLM equipment be connected to form operation and
maintenance networks. These networks should be continuously monitored by an
interface device such as FLEXR
(NMA™) system.
Fujitsu also recommends that operations and maintenance personnel keep
records of all alarm and status indications and the steps taken to clear them. A
sample of the type of document that can be used with the FLM 150 ADM is
contained in Appendix A, Trouble Analysis Log.
1.1.2
Procedure
Determine the location (near- or far-end) and severity of the condition and record
Step 1
this information in the trouble log.
a. Check the NE ACT and FE ACT LEDs on the AW1A unit. NE ACT
indicates a near-end alarm while FE ACT is lit for a far-end alarm. Treat
near-end conditions first. If FE ACT is indicated, the number shown on the
MP1A unit display identifies the remote node whose alarm/status
conditions are displayed on the AW1A unit.
b. If there is a near-end alarm (NE ACT LED on AW1A is on), then the display
on the MP1A unit should be a decimal point. If a number without a decimal
is being displayed, the status lights on the AW1A are showing the status for
that remote node. Press the FE SEL button to check the next subscribed
node. Continue this process until the decimal appears in the display. This
will verify the NE ACT indication on the AW1A unit.
Issue 9, May 1999
®
or the Network Monitoring and Analysis
FNC and FNC Customer Use Only
1.1: Alarm/Status Identification
Vol. ll, Page 480.1-1
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