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11
Common Faults and Solutions
Symptom Possible Cause Solution
The service program fails
to be connected.
The drive program is not
correctly installed.
Install the drive program
correctly.
The USB port (lead) is not
connected or is faulty.
Change the USB lead or
check if the USB port is
faulty.
The infrared tube is
blocked.
Ensure that the
surrounding infrared tubes
are not blocked.
Repositioning is required
every time the display is
switched on.
The computer is equipped
with a recovery card.
Disable computer
protection and perform the
positioning again.
The positioning is
inaccurate.
The positioning is not
performed properly.
Press AUTO on the remote
controller to show the full
screen, and use the pen
provided with the display
to perform 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.
The infrared tube is
blocked.
Check if infrared tubes are
blocked.
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