2.2 Installation of the Hybrid IP-PBX
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.
2.
Turn the 4 screws counterclockwise to loosen them.
Screws
44
Installation Manual
3 2
4
1