44Switch 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.
2Verify that the power output LED for each power supply lights green.
3Verify 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).
4Verify that air is flowing from the cooling fans out through the vents of the chassis.
5If 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.
6If the problem persists, contact the Nortel Technical Solutions Center.
Powering on AC power supplies
Power on the AC power supplies to provide power to the switch.
Nortel Ethernet Routing Switch 8300
Installation — Chassis
16 June 2008
Copyright © 2008 Nortel Networks