Message Cause and SolutionSaving log failed. • You are using a USB memory device that is not compatible with theunit.→ Use a USB memory device compatible with the unit (Page 107).• There is not enough free space on the USB memory device you areusing.→ Confirm the USB memory device has sufficient free space (at least5 MB) before using it.System Error!Please restart the system.If error message appearsagain, please contact Installeror Service Administrator.• The unit’s internal software failed to start up.• The unit failed to write data to the internal flash memory.→ Reset the unit by turning off its power, then turning it back on. If thesame message is displayed after resetting the unit, contact your dealer.MiscellaneousProblem Cause and Solution"Safe Mode" is displayed onthe screen.Note• When "Safe Mode" isdisplayed on thescreen, you cannotconnect to thenetwork, make videoconference calls, orperform certainsettings (selfdiagnosis, performinga network test, etc.).• A standard definition (640 ´ 480p, 720 ´ 480p) video camera signal hasbeen detected.→ Disconnect the video camera from the unit, and reset the unit by turningoff its power, then turning it back on. Check to make sure the videocamera’s resolution is set to HD (1920 ´ 1080i), and then connect thevideo camera to the unit again.• A standard definition (640 ´ 480p, 720 ´ 480p) display signal has beendetected.→ Disconnect the display from the unit, and reset the unit by turning off itspower, then turning it back on. Make sure to connect a HD (1920 ´1080i) display to the unit.• The field frequency of the video camera or display you are using isdifferent from the field frequency setting of the unit.→ Use a video camera or display that has the same field frequency as theunit. For details, contact your dealer.136 User ManualAdditional Information