Nortel Networks NN46200-310 manual See Job aid Inserting the DC power supply

Installing the DC power supply 33

5Push the new power supply partway into the bay, leaving the terminal block at the side of the power supply exposed.

See “Job aid: Inserting the DC power supply” (page 36).

6Use a Phillips screwdriver to remove the screw that secures the plastic safety cover to the power supply and remove the cover. Set the cover aside; you will replace it later.

7Note the positions of the ground studs and of the positive and negative power inputs. See “Job aid: DC power supply input and ground stud location” (page 36).

Either +VDC or –VDC can be referenced to the frame ground for +48 VDC (nominal) or –48 VDC (nominal) applications.

8Make sure that the +DC cable is always connected to the positive terminal and the –DC cable is always connected to the negative terminal.

DANGER

Risk of injury by electric shock

Before you continue with this procedure, ensure that the DC power source is switched off.

9Attach the earth ground lead to the ground stud on the power supply. See “Job aid: Attaching the earth ground lead to the ground stud” (page 37).

Use the washers in the following order: a flat washer

b crimp lug

c lock washer d Hex nut

Nortel Ethernet Routing Switch 8300

Installation — DC Power Supply

NN46200-310 01.01 Standard

9 June 2008

Copyright © 2008 Nortel Networks