Operation Manual

17
 Trouble Shooting
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.
2
Dead Unit
The start interface stays on the
screen for long time without
changing.
Press reset on back of PND.
No display of the screen, or
display on screen is frozen as
any button is pressed.
Press and hold the power on
button for 5 seconds, then release
it to power on.
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.
4
Impossible to
recharge
During charging, the green
LED indicator of the device
has no light or no charging
sign displayed on the screen.
If the charger is connected
properly and powered.
Charger is damaged.
Battery is damaged or full charged.
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。