32
Troubleshooting
Problem
Cause
Solution
The service program fails
to be connected.
The driver program isn't properly
installed.
Install the driver program
properly.
The USB port (lead) is not
connected or is faulty.
Change the USB lead or check if
the USB port is faulty.
Infrared tube is obscured.
Make sure infrared tubes have not
been obscured.
Repositioning is required
every time the panel is
switched on.
The computer is equipped with a
recovery card.
Disable computer protection and
perform the positioning again.
The cursor of the pen is
unstable when the pen is
used.
The writing method is incorrect.
You are advised to use the pen
rather than a finger to write. Hold
the pen as far to the nib as
possible. The angle between the
pen and display needs to be
greater than 60 degrees. Do not
touch the display with your sleeve
or wrist.
Strong light or infrared
interference exists.
Remove the interference source
or change the using environment.
The handwriting is
discontinuous. (Part
of the handwriting
cannot be displayed.)
The writing method is incorrect.
You are advised to use the pen
rather than a finger to write. Hold
the pen as far to the nib as
possible. The angle between the
pen and display needs to be
greater than 60 degrees. Do not
touch the display with your sleeve
or wrist.
The covering area of the nib does
not meet the requirement or the
nib is too small.
Change the nib or use a pen with
larger covering area.
Infrared tube is obscured.
Check if infrared tubes are