Replacing Cabinet Subassemblies; Removing A Fan Assembly - Northern Telecom DNC-50 Maintenance And Troubleshooting Manual

Dynamic network control systems
Hide thumbs Also See for DNC-50:
Table of Contents

Advertisement

4. Replacing Cabinet Subassemblies

Equipment installation and removal instructions are provided in detail in the
Installation Guide for Cabinet Systems, 450-1011-201. However, exceptions
are cabinet subassemblies, such as the fans and filter doors. These
subassemblies should be removed only under the terms and conditions of
your maintenance agreement with your supplier.

Removing a Fan Assembly

If you have determined that a fan is defective, remove it and return it to the
repair depot according to the terms of your maintenance agreement. You
should take the SRUs in the affected cabinet out of service or not operate the
system if a fan or fans in a cabinet are inoperable. A failed fan can result in
overheating and damage to equipment.
TOOLS:
1
1
1
5/64-inch Allen wrench
1/4-inch nutdriver
Flat-blade screwdriver.
33
Practice 450-1011-501

Advertisement

Table of Contents
loading

This manual is also suitable for:

Dnc-100Dnc-500

Table of Contents