If the monitor displays a blue screen instead of video, check that the connections on the back of the call station and monitor are correctly inserted.
1 / ON THE MONITOR
Make sure the two wires from the call station are inserted up to the stops on the CS/Call station terminal [7-2] (the polarity is not important).
Check that the cables are correctly inserted in the terminals by pulling slightly on them, then pass them through the notch provided (D).
2 / ON THE CALL STATION
Check that the call station cables are correctly inserted in the M+/M- terminals. The call station button should light up.