Replacing The Cooling Fans - Northern Telecom DMS-100 Series Maintenance Procedure

Task
The cooling fans in the Service Peripheral Module should be replaced if they
are not operating properly. A light may turn on at the frame supervisory
panel (FSP) to indicate a malfunction.
Interval
The cooling fans need only be replaced as required.
Action
The following flowchart is a summary of this procedure. Use the
instructions in the step-action table that follows the flowchart to perform the
procedures.
Routine maintenance procedures 1-13

Replacing the cooling fans

DMS VoiceMail Routine Maintenance Procedures SPM 02