
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.
Back Board
Release Lever
3.Turn the 4 screws clockwise, in the order indicated by the numbers 1 to 4, to fix the PSU.
3 2
Screws
4 1
Replacing the Power Supply Unit
1.Unplug the AC power cord and
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