Nortel 1000E Maintenance Manual page 130

Page 130 of 162
553-3041-500 Standard 1.00
Replacing equipment
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 Procedure 16.
Procedure 16
Installing the NTAK93/NTBK51 daughterboard before the NTAK20
daughterboard
1 Visually inspect the connector pins on the underside of the
daughterboard. Realigned bent pins prior to mounting.
2 Place the NTBK50 down flat on an antistatic pad.
3 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.
4 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.
5 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.
6 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. Then press down on the two corners on the
opposite until they lock into place.
September 2004
End of Procedure