Cisco Model GS7000 4-Port Node 1 GHz with 42 54 Split Installation Guide

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Chapter 5    Maintenance 
 
 
 
70 
 
Preventative Maintenance 
Overview 
Preventive maintenance procedures are regularly scheduled actions that help 
prevent failures and maintain the appearance of the equipment. 
 
Schedule 
Perform the preventive maintenance procedures at these intervals. 
Procedure 
Interval 
Visual Inspection: 
 
 
External Surfaces 
Semiannually 
 
Connectors 
Semiannually 
 
Indicators 
Semiannually 
 
Wiring/Cable Assemblies 
Annually 
Cleaning: 
 
 
External Surfaces 
Annually 
 
External Controls/Connectors 
Annually 
 
Internal Connectors/Circuit Cards 
Annually 
 
Visual Inspection 
Visually inspect the following items. 
What to Inspect 
How to Inspect 
Exterior surfaces 
Inspect for: 
 
dust, dirt, lubricants, or other foreign matter worn spots or 
deep scratches on surfaces 
 
corrosion 
 
marred protective finish exposing bare metal 
 
missing, incorrect or obliterated marking, decals, or 
reference designators