Power Supply Module Replacement - Nortel Media Gateway 3500 Installation, Operation And Maintenance Manual

Installation, Operation, Maintenance Manual
7. In the EMS, unlock the Ethernet Switch board of which the RTM has been replaced.
For more information refer to the Element Management System User's Manual,
Document #: LTRT-910xx.
8. In the EMS, verify that the Ethernet Switch board is enabled.
9. In the EMS Main screen, Status pane, double click on the Ethernet Switch board of
the RTM that has been replaced. In the dialog box that appears, verify that the uplink
port is enabled.
14.6

Power Supply Module Replacement

Note:
To remove a faulty power supply, take these 4 steps:
1. Unfasten the 4 screws on the plate of the power supply to be removed.
2. Press the red ejector button on the black ejector/injector latch.
3. Pull on the ejector/injector latch and ease out the power supply from the slot.
4. In the EMS, verify that the alarm (regarding the faulty power supply) is now clear.
Use EITHER the AC or the DC power supplies. Never connect both types of
power supplies at the same time, as chassis malfunction or permanent
damage can result.
The PEM (AC/DC) and APM Fan Tray PS (AC/DC) units are NOT hot-
swappable, therefore they should NEVER be removed while power is
connected.
To insert a replacement power supply, take these 6 steps:
1. Hold the power supply horizontally with the black ejector/injector latch pointed
outward.
2. With the black ejector/injector latch in the open (pulled out) position, insert the power
supply in the slot.
3. Ease the power supply all the way into the slot until the ejector/injector latch touches
the chassis.
4. Press the black ejector/injector latch inward, toward the middle until you hear a click.
5. Fasten the screws.
6. In the EMS, verify that the Alarm
Version 3.0
DC Power Supply Modules differ from the AC Power Supply Modules by
containing an additional smaller connector on the back of a DC power
supply.Note
14. Hardware Replacement Procedures
Caution
159 October 2005