Changing Fasteners On An Msa32 Sparing Panel - Nortel 7400 Hardware Installation

Changing fasteners on an MSA32 sparing panel

Prerequisites
Procedure steps
Multiservice Switch 7400 Hardware Installation, Maintenance, and Upgrade 6.1S2
Change the fasteners on the bottom of the following MSA32 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.
• 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.
1 Locate the sparing panel that is to be connected to the spare MSA32 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.
2 Ensure that the Main A is mounted onto the cabinet, frame, or rack and it
remains uncabled.
3 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 connectors to have screws changed
on a 1:1 configuration" (page 214) and "Location of MSA32 connectors to
have screws changed on the bottom 1:n sparing panel" (page 215).
4 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 sparing panel cable connector screws"
(page 216).
5 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
Chapter 39 Hardware procedures 213