Panasonic KX-TDE100 Installation Manual page 56

3.2 Installation of the PBX
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
3.
Turn the 4 screws clockwise, in the order indicated by the numbers 1 to 4, to fix the PSU.
Screws
Replacing the Power Supply Unit
1.
Unplug the AC power cord and Back-up Battery Cable.
56 Installation Manual
Back Board
3 2
4
1