To protect the back board from static electricity, do not touch parts on the back board in the main
unit and PSU. To discharge static electricity, touch ground or wear a grounding strap.
The following procedures are for installing or replacing a PSU only. Do not replace or remove the
PSU for any other purpose.
Installing the Power Supply Unit
Insert the PSU along the guide rails.
For safety reasons, do not touch parts in the PSU.
3.2 Installation of the PBX