Carrier Access 1750 user manual APM Major Alarm Troubleshooting Flowchart

Maintenance and Troubleshooting

Flowchart

From 1

NIM Major Alarm?

No

CPU Failure ?

No

Yes

Yes

Use loopbacks to verify alarm condition

Reset CPU from front

panel switch

Check following most likely causes/correct as necessary: -equipment cable connectors -NIM configuration

-reseat NIM module -replace NIM module

Alarm Clears ?

No

Alarm Clears? Yes 1B

No

1A

Yes1B

SAM Major Alarm?

No

1A

Yes

Check following most likely causes/ correct as necessary:

-cable connector to CPU/CPU I/O -reseat CPU/CPU I/O modules -replace CPU

Alarm Clears ?

Yes 1B

Review Alarm

Summary and System log- gather all pertinent info and call Customer Service

-Use loopbacks to isolate -Check equipment cables -Check configuration -Reseat module -Replace module

No

1A

Alarm Clears ?

Yes 1B

1B

No

1A

Return to 1

Figure 8-3: APM Major Alarm Troubleshooting Flowchart

8-24 Broadmore 1750 - Release 4.6