Polycom DOC2559A Manuel d'utilisateur télécharger pdf (Page 54)

Chapter 2- Component Replacement

2-8

4 Using a star screw driver, disconnect the two wires connected to the

Terminal block (-48 VDC & RTN) of the failed DC PRM unit.

5 Unscrew the captive screws on the rear panel of the PRM unit that

secures the unit to the chassis.

6 Using the handle fitted to the DC PRM, pull and slide the PRM unit

out.

7 Slide in the replacement PRM unit.

8 Push the PRM unit firmly into the chassis, making sure it is properly

seated in its slot.

9 Tighten the captive screws on the rear panel of the PRM unit to the

rear chassis.

10 Connect the black wire into the -48 VDC terminal block and the red

wire to the RTN terminal block and tighten the two screws.

11 Replace the transparent plastic cap on the terminal block.

12 Turn ON the Main that supplies power to the RMX.

13 Turn ON the circuit breaker on each of the DC Power Rail Modules.

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Polycom DOC2559A Manuel d'utilisateur Page 54