Nortel Passport 7400, Hardware Installation, Maintenance, And Troubleshooting, Page: 290 / 438

290 Chapter 37 Hardware procedures
241-7401-240 5.2S1
3 Holding the end of the flexi-cable that has one D-sub connector (not two),
at the underside of the panel connect the D-sub connector with the panel
D-sub connector at one side of the panel. Fasten by sliding the latch along
the long axis of the connector. The latch engages both connector studs in
one motion. Allow the cable to hang freely.
4 Connect the remaining 3 flexi-cable connectors on the bottom of the
sparing panel by repeating step 3. For easiest access, connect them one
after the other in a row beside the one that is already connected.
5 Install the next RJ45 sparing panel the same as the previous one. Below
each sparing panel, leave a vertical space equal to the height of the panel
faceplate. The space accommodates cables without pinching or crimping
them after installation. Allow the flexi-cables from the panel above to be
pushed back by this panel.
6 Take one of the flexi-cables hanging at the underside of the above panel
and route it past the rear of the sparing panel to the underside of the panel
that was last installed. See the inset in the figure “Cable connections of
MSA32 sparing panels with RJ45 connectors” on page 292.
7 Connect the D-sub cable connectors with the lower panel connectors that
are in the same position. Always vertically align the connections so that
the inter-panel cable connections occur in the same positions from panel
to panel.
8 Fasten the D-subs by fixing a capped stud fastener at each post. The hex
shank is 11/64-inch (4.4-mm). Stop when the screws are snug and the
outside lip of the cable connector almost touches the flat surface. Avoid
stripping a screw or the post hole.
9 Holding the end of another flexi-cable that has one D-sub connector (not
two), align and plug the D-sub into the third D-sub connector on the
underside of the sparing panel. Allow the cable to hang freely.
10 Repeat step 9 for the remaining 3 flexi-cables.
11 For each remaining sparing panel in the 1:n series up to but not including
the Main A (bottom) panel, repeat step 5 to step 11 continuing
downwards.
12 Install the last (bottom) RJ45 sparing panel the same as the previous one.
Below the panel, leave a vertical space equal to the height of 3 panel
faceplates. Allow the flexi-cables from the panel above to be pushed back
by this panel.
13 Connect and fasten the hanging flexi-cable D-subs from the sparing panel
above the Main A into the underside of Main A. Fasten each D-sub as