Nortel 1000E Maintenance Manual page 138

138 Replacing equipment
2
3
If more than one NTBK50 card is installed, the additional cards may not
carry daughterboards, depending on the system configuration. At least one
NTAK20 for each system is required.
Mounting the daughterboards
Work on a flat, static-free surface when mounting or removing
daughterboards. To install the NTAK93 and NTBK51 daughterboard before
the NTAK20 daughterboard, follow the steps in
the NTAK93/NTBK51 daughterboard before the NTAK20 daughterboard"
(page
Procedure 31
Installing the NTAK93/NTBK51 daughterboard before the NTAK20
daughterboard
Step
1
2
3
4
5
6
Copyright © 2007, Nortel Networks
.
At the two corners adjacent to the connector, gently lift the entire
side until the mounting holes are clear of the locking groove of the
standoff.
To remove the connector pins, grasp the edge of the board adjacent
to the connector and lift gently.
138).
Action
Visually inspect the connector pins on the underside of the
daughterboard. Realigned bent pins prior to mounting.
Place the NTBK50 flat on an antistatic pad.
From an overhead view, with the daughterboard parallel above the
NTBK50 and the connector pins aligned over the connector sockets,
line up the mounting holes on the daughterboard with the tops of the
standoffs on the NTBK50.
Lower the daughterboard onto the NTBK50, keeping the standoffs
in line with all four holes, until the holes rest on the tops of the four
standoffs.
If more than a very slight amount of pressure is required at this point,
the connector pins may not be aligned with the connector socket. If
so, lift the daughterboard off the NTBK50 and return to Step 2.
Apply pressure along the edge of the board where the connector
is located until the standoffs at the two corners adjacent to the
connector snap into a locked position.
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 01.02 Standard
Release 5.0 20 June 2007
—End—
Procedure 31 "Installing