Changing Fasteners On An Msa32, Msa8 Sparing Panel - Nortel Multiservice Switch 7400 Installation & Maintenance

Changing fasteners on an MSA32, MSA8 sparing panel

Change the fasteners on the bottom of the following MSA32 and MSA8
sparing panels:
• the only panel in a single-panel BNC or DB15 setup
• the bottom most panel in a multi-panel BNC or DB15 setup
• the only panel in a single-panel RJ-45 setup
The connectors must be changed to D-sub hex screw fasteners to
accommodate the FP interface cables which connect to the Main A sparing
panel.
Prerequisites
• In a multi-panel RJ-45 setup the inter-panel flexi-cables provide the
correct type of connectors for the FP interface cables, so there is no need
to change the fasteners in this case.
• Fasteners are included in the installation kit.
• Fasteners are changed after the sparing panel is installed on the rack.
Procedure steps
Step
1
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3
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5
Copyright © 2005, Nortel
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Hardware procedures
Action
Locate the sparing panel that is to be connected to the spare MSA32 or
MSA8 FP, that is, the bottom panel in the 1:n series or the only panel in a
1:1 configuration. The single or bottom panel is the Main A panel.
Ensure that the Main A is mounted onto the cabinet, frame, or rack and it
remains uncabled.
Locate the sparing connectors that are to have their D-sub fasteners
changed. The sparing connectors are identified by the letters A, B, C, and D
in the figures Location of MSA32 and MSA8 connectors to have screws
changed on a 1:1 configuration (page 140) and Location of MSA32 and
MSA8 connectors to have screws changed on the bottom 1:n sparing panel
(page 141).
Remove the pairs of 11/64-inch (4.4-mm) D-sub stud fasteners from the
faceplate of the panel at each identified sparing connector. Put the fasteners
aside as spares. To distinguish the stud from hex fasteners, refer to the
figure MSA32 and MSA8 sparing panel cable connector screws (page 142).
Where each stud fastener was removed, add an 11/64-inch (4.4-mm) hex
fastener from the installation kit. Tighten each hex fastener to snug (no extra
turns) until the bottom of the hex shank is flush against the face of the panel.
Nortel Multiservice Switch 7400
Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
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Nortel Confidential