Panasonic KX-TDA100 Installation Manual page 40

2.2 Installation of the Hybrid IP-PBX
2.
Push the release lever in the direction of the arrow, so that the PSU is made to engage
with the connector on the back board securely.
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.
40 Installation Manual
Back Board
3 2
4
1