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DM-PSUA-PWS

Power Supply Module
Installation Guide

To replace a power supply module, do the following:
  1.  Disconnect the power cord connected to the 

power inlet of the power supply module being 
replaced.

  2.  Using a Phillips head screwdriver, loosen the two 

thumb screws.

  3.  Remove the power supply module from the slot 

by gently pulling the handle.

  4.  Insert the replacement power supply module into 

the slot until it is fully seated.

  5.  Tighten the two thumb screws.
  6.  Connect the power cord to the power inlet of the 

power supply module.

Description

Three DM-PSUA-PWS power supply modules occupy 
the DM-PSU-3X8-RPS. This document provides 
instructions for replacing a failed power supply module.

Power Supply Module Replacement

CAUTION

:  Before removing a power supply module 

from a power supply slot, it is recommended that 
ac power be removed from the power supply module 
to prevent damage to the DM-PSU-3X8-RPS. 

CAUTION

:  The power supply modules are static 

sensitive. Standard electrostatic discharge 
precautions should be followed when handling the 
modules.

NOTE

:  Although the DM-PSU-3X8-RPS continues to 

operate if a single power supply module fails, it is 
recommended that the failed power supply module be 
replaced as soon as possible to restore power supply 
module redundancy.

NOTE

:  The power supply modules are hot 

swappable; therefore, a failed power supply module 
can be replaced without removing power from the 
other power supply modules in the 
DM-PSU-3X8-RPS.

Additional Resources

Visit the product page on the 
Crestron

®

 website 

(www.crestron.com) for additional 
information and the latest firmware 
updates.

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