Ethernet Routing Switch Installation Guide

Table Of Contents

44 Switch operations

ATTENTION

When you first install a chassis that contains two or three

power supplies, you must turn on two of the power supply units

simultaneously. If you wait longer to turn on the second power

supply, one of the power supplies could shut down. To correct this

condition, turn off both power supplies, wait at least 30 seconds, and

then turn on both power supplies again simultaneously.

For more information about the power switch locations, see the

following figure.

2 Verify that the power output LED for each power supply lights

green.

3 Verify that the power supply status LEDs and the fan LED on the

8393SF/CPU or 8394SF/CPU module light green.

After you turn on the switch, each module automatically

initiates a diagnostic test to verify proper module function. See

“Successful installation verification” (page 32).

4 Verify that air is flowing from the cooling fans out through the

vents of the chassis.

5 If the power supply LED remains off, or if you cannot feel air flow

from the chassis vents, turn the DC power supplies off, and then

turn them on again.

6 If the problem persists, contact the Nortel Technical Solutions

Center.

--End--

Powering on AC power supplies

Power on the AC power supplies to provide power to the switch.

Nortel Ethernet Routing Switch 8300

Installation — Chassis

NN46200-309 01.01 Standard

16 June 2008