Nextar Q4 User Guide - Page 22

Troubleshooting PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION The unit can receive signals now but can't then or signals received are not stable. The built-in rechargeable battery is weak. The unit may be obstructed by veil, such as heat insulation paper. Swing of the unit is too great. System software of the unit fails to function by change. Use the adaptor to supply power or charge the battery. Remove the veil. Avoid great swing of the unit. Turn on the unit again. Other possibilities: Static or other external interference may cause the unit function abnormally. In order to recover normal status, please unplug the power supply cord and then plug it into the outlet again to reset the unit. If the problems still exist, please cut off the power supply and consult your service center or the qualified technician. 22