Panasonic KX-TDE100 Installation Manual page 57

3.
Never install or replace a PSU unless at least 20 s has elapsed after the AC supply and backup battery
supply are disconnected.
4.
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 an earthing 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
1.
Insert the PSU along the guide rails.
CAUTION
For safety reasons, do not touch parts in the PSU.
2.
Push the release lever in the direction of the arrow, so that the PSU engages securely with the connector
on the back board.
Release Lever
Guide Rail
Back Board
3.2.4 Installing/Replacing the Power Supply Unit
Installation Manual 57