Powering Up A Multiservice Switch 7480; Nortel Multiservice Switch 7400 - Nortel Multiservice Switch 7400 Installation & Maintenance

Powering up a Multiservice Switch 7480

Power up a Nortel Multiservice Switch 7480 after you have installed all shelf
components.
Prerequisites
• Verify that all power supply controls are in the standby position. See the
figure
power control in the standby position (page
Procedure steps
Step
1
2
3
4
5
6
7
8
Copyright © 2005, Nortel
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Hardware procedures
Unlocked power supply on a Multiservice Switch 7480 with the
Action
Disengage all processor cards from the backplane of the shelf.
Engage the minimum number of processor cards required, based on the
number of power supplies in the shelf.
If you have one power supply, engage a CP in slot 0 and at least one FP. Do
not engage more than seven FPs. Ensure that all other processors are
disengaged.
If you have two power supplies, engage at least one CP and two FPs. Or,
engage two CPs and at least one FP.
If you have three power supplies, engage at least one CP and three FPs.
Turn on the circuit breakers for the outlets that supply power to the device.
Verify that the LEDs on all power supplies are red.
Apply power to one of the power supplies by toggling its power control to the
on position. See the figure
Switch 7480 with the power control in the standby position (page
Verify that the power supply LED is green.
Normal operation is not guaranteed if there are no processor cards in the
shelf. If you have not installed any processor cards before you toggle on a
power supply, the system does not supply power to the shelf and the power
supply LED remains red.
Verify that the cooling unit LED is green and is operational. You should be
able to hear the fans start to rotate.
If necessary, apply power to a second and third power supply by toggling to
the on position their power controls. Verify that the LED for each power
supply is green.
If you install eight or more FPs, you must use a second power supply. If your
system contains fewer than eight FPs, the system uses the second power
supply for redundancy.
If necessary, engage the remaining processor cards.

Nortel Multiservice Switch 7400

Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
409).
Unlocked power supply on a Multiservice
409).
Nortel Confidential