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.