User Guide

Troubleshooting
33
CMOS Sensor
Q2: How come the round calibration target does not execute
properly?
A: (1) Please check whether the pointer or light pen is working:
(1-1) Please make sure the pointer or light pen has a
battery of adequate power and has been turned on.
(1-2) When using the pointer
or light pen, please avoid
writing in shadow areaa (see
gure below) and maintain
a 25 degree angle against
the projection screen.
The pointer or light pen is
available for use only when
signals transmitted by it can
be received by the sensors.
(2) The ambient lighting may be too bright to work properly.
Please keep the projection screen and sensors from direct
ambient lights.
(2-1) Direct sun light to the projection screen.
(2-2) Light sources exist near the sensors.
Please close and open the SPDriver program again. If
Problem Q5 persists, remove light spots until none are left
in the window.
Avoid writing in shadowy areas
Keep the light pen and project screen at an
angle of 25 degree or more against each other