Nortel 7400 Hardware Installation page 269

• You need a multiport aggregate device with one of the following PECs:
— NT0486 (balanced, dc-powered)
— NT0420 (balanced, ac-powered)
— NT0421 (unbalanced, dc-powered)
— NT0422 (unbalanced, ac-powered)
• Before installing a multiport aggregate device, ensure that all cables,
including the power cables, are disconnected from the unit.
• Follow "Avoiding damage from static electricity" (page 208) to protect
the unit from damage by ESD or from transferring ESD to other
hardware.
Procedure steps
1 Fasten a bracket to each side of the multiport aggregate device using two
of the screws and the flat washers provided. See the figure "Installing
brackets on a multiport aggregate device" (page 271).
2 If you are installing the first panel on the rack, connect the grounding wire
(supplied separately by Nortel Networks) to the top right securing screw.
See the figure "Grounding 19" termination panels" (page 241).
or
If you are installing the lowest panel on the rack, secure the bottom of the
grounding strip and a grounding wire to the rack with a screw.
3 Use a 5/16-inch socket wrench to secure the brackets to the cabinet or
rack with four of the screws provided.
Multiservice Switch 7400 Hardware Installation, Maintenance, and Upgrade 6.1S2
Chapter 39 Hardware procedures 269
WARNUNG
Verletzungsgefahr durch Stromschlag
Bevor Sie Kabel anschließen oder das Gerät einschalten,
vergewissern Sie sich, dass das Gerät vorschriftsmäßig
geerdet ist. Ist das Gerät nicht vorschriftsmäßig geerdet,
besteht Verletzungsgefahr für das Bedienpersonal und
das Risiko der Beschädigung des Geräts durch
Stromschlag. Nähere Informationen finden Sie unter
NN10600-170 Nortel Networks Multiservice Switch
7400 Hardware Description.