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Replacing a dc power rail module (prm), Replacing a dc power rail module (prm) -7, Replacing a dc power rail module – Polycom DOC2559C User Manual

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Polycom RMX 4000 Hardware Guide

2-7

4

Carefully slide the PEM unit out from the rear slot.

5

Slide in the replacement PEM unit.

6

Push the PEM unit firmly into the Power Supply, making sure it is

properly seated in its slot.

7

Tighten the captive screws on the rear panel of the PEM unit to the

rear chassis.

Replacing a DC Power Rail Module (PRM)

On the rear of the RMX 4000 two DC Power Rail Modules are fitted, each

with their own power cord.
Use the following procedure to replace a DC Power Rail Module:

1

Turn OFF the circuit switch on the each of the DC PRMs and from the

Mains.

2

Verify that DC PRM unit you are about to replace on the RMX 4000 is

not HOT or has any Live current feed.

3

Remove the plastic cap fitted to the Terminal block that protects the

direct current connections.

Please verify the type of PRM used on your RMX 4000. Do not insert a
Power Rail Module of a different type on your system.

When replacing a DC Power Rail Module:

On the Mains, disconnect the electricity that supplies direct current running
through the power cable to the failed DC PRM.