11.2 Error messages - main monitorError messages can be viewed by pressing M N.Display Cause & Solution Page“Cannot register.” R Registration failed because it was not completed within the specifiedtime.→ Check that the devices to be registered are correctly connectedand receiving power, and then try again.262627“Cannot be used.” R The wiring between the main monitor and extension monitor is notconnected.→ Check the wiring connections.R The registration number used for the extension monitor is different onthe main monitor and extension monitor.→ Use the same registration number on the main monitor andextension monitor.R 2 extension monitors are using the same registration number.→ Cancel 1 of the extension monitors so that it becomes a mainmonitor again and then re-register it with a different registrationnumber.R Power is not connected to the extension monitor.→ Connect power to the extension monitor.2627“Not registered.” R The extension monitor has not been registered on the main monitor. 2611.3 Error messages - extension monitorError messages can be viewed by pressing M N.Display Cause & Solution Page“Cannot connect tothe main monitor.Please check theconnection or theregistration ofthe main monitor.”R The wiring between the main monitor and extension monitor is notconnected.→ Check the wiring connections.R The extension monitor has not been registered on the main monitor.→ Register the extension monitor on the main monitor.R The registration number used for the extension monitor is different onthe main monitor and extension monitor.→ Use the same registration number on the main monitor andextension monitor.2611.4 Error messages - sub monitorDisplay Cause & Solution Page“Cannot connect tomain monitorstation”R The sub monitor is too far from the main monitor, or there is an objectsuch as a concrete wall obstructing the signal.→ Move the sub monitor closer to the main monitor or to an area thatdoes not have any obstructions.8“Registrationfailed”R Registration to the main monitor has not been completed. Bring thesub monitor closer to the main monitor and try registering again. -3411. Troubleshooting