Troubleshooting – Nextar Q4-03 User Manual
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Other possibilities:
Static or other external interference may cause the unit to 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 a qualified technician. 
 
 
 
 
 
 
 
 
 
 
 
The unit can
receive signals
now but can’t
then or signals
received are not
stable.
The built-in rechargeable 
battery is weak.
Use the adaptor to supply 
power or charge the 
battery.
The unit may be obstructed 
by veil, such as heat 
insulation paper.
Remove the veil.
Swing of the unit is too 
great.
Avoid great swing of the 
unit.
System software of the unit 
fails to function after a 
change.
Turn the unit on again.
PROBLEM
POSSIBLE CAUSE
POSSIBLE SOLUTION
Troubleshooting
