Connect the Power & Start UpXN120 Expansion Unit Guide 195 ! ImportantSet the NORMAL switch to theON position.The NORMAL switch is located under the sub cover on the right sideof the station connection sockets.If you are adding the expansion unit to an existing XN120 systemSystem Start Up – Retain Customer ConfigurationThis will keep the existing XN120 configuration, you can then configure the new ports within the expansion unit.Before you power on the system check that the NORMAL switch is set to ON. This will ensure that the systemmemory retains your existing configuration.1 ! ImportantSet the NORMAL switch to theON position on the XN120Main Unit.The NORMAL switch is located under the sub cover on the right sideof the station connection sockets of the XN120 main unit.Switching the XN120 OFF – when expansion units are installed.! Be sure that no calls are in progress otherwise they will be cut off.1. Turn the power switch off on the left side of each XN120 expansion unit.2. Turn the power switch off on the left side of the XN120 main unit.Switching the XN120 ON – when expansion units are installed.1. Turn on the power switch on the left side of each XN120 expansion unit.2. Turn on the power switch on the left side of the XN120 main unit.System Start Up – Default ConfigurationCAUTION! This will erase any customer configuration in the battery backed memory.Before you power on the system set the NORMAL switch to OFF. This will ensure that the system is set to thedefault configuration.Set the NORMAL switch to ON after the system has started up.SlideSlide