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Trouble clearing
No. Fault Possible Cause Solutions
1 No power on Battery drained (The screen
has no further display after a
blink when pressing power
on button.)
Please refer to the description of
battery charging in this manual,
only use the enclosed charger to
charge the device.
The start interface stays on
the screen for long time
without changing.
Take out the battery, then put it
back, start the device again.
Press and hold the power on
button for 5 seconds, then
release it to power on.
2 Dead Unit
No display of the screen, or
display on screen is frozen
as any button is pressed.
Take out the battery, then put it
back, start the device again.
3 Error in upgrade Dead or frozen during
upgrade, display on the
screen is frozen and no
button works.
This fault can only be fixed by
the manufacturer. Please return
for repair.
If the charger is connected
properly and powered.
Charger is damaged.
Battery is damaged or full
charged.
4 Impossible to
recharge
During charging, the green
LED indicator of the device
has no light or no charging
sign displayed on the
screen.
It is normal when the green LED
is lit on but the charging sign is
not on the screen at the same
time during charging.
5 Coordinates
Calibration
failure
The click position is not
match with the reaction
position after starting up
the device。
Power off and then press the
power button for 6-9 seconds,
select Coordinates Calibration to
operate。