User Guide

Table Of Contents

March 2005 Installing the Hardware 11

4 Continue sliding the power supply back until the front

panel meets the front of the chassis. Do not force the

power supply into the bay. Otherwise you can damage the

connectors.

5 Tighten the two captive screws, located at the top and

bottom of the power supply’s front panel. Be sure not to

overtighten the captive screws. If you use a screwdriver,

the torque used to tighten the screws must not exceed 2.3

inch pounds.

6 Verify that the power supply’s on/off switch is in the

off ( O ) position.

7 Loop the AC power cord (provided) once through the

cable retainer located on the power supply’s front panel

and secure the retainer using the butterfly fastener. By

looping the power cord through this retainer, the cord

cannot be accidentally pulled from the socket.

8 Once the power cord is looped through the retainer,

plug the power cord connector into the power supply’s

socket and then plug the power cord into an easily-acces-

sible, properly grounded outlet. Do not use an extension

cord.

Note. For OS7700 and OS7800 switches using DC power,

the power cord connector snaps into the connector socket.

A cable retainer is not used. For more information, refer to

the Hardware Users Guide.

Important. Do not turn on the power supplies at this time.

9 Install all remaining power supplies by repeating steps

1 through 8 for each power supply.

50/60Hz, 8.0/7.0/3.5

100/115/250V

TEMP

DC OK

AC OK

50/60Hz, 8.0/7.0/3.5 A

100/115/250V

TEMP