User Guide

Troubleshooting
34
Q3: How come the cursor is not located where the light pen is
pointed to?
A: It may be caused by the following:
(1) Poor system calibration. Please make sure the center of
the round target is pointed during calibration.
(2) The project location, projection size, or projection distance
may be changed.
(3) The projection resolution may have been changed. Please
calibrate again to solve this problem.
Q4: How come the cursor jumps around?
A:
The ambient lighting may be too bright to work properly. Please
keep the projection screen and sensors from ambient light
interference, especially direct sun light.(Please refer to Q2.)
Q5: Why does the message "The ambient
light is too bright to run the light pen
system properly" appear?
A: Too strong an ambient lighting may
interfere with the functions of sensors
contained in your projector. Please
keep the sensors of your projector
away from direct ambient lights.
6: Since SP driver is resident in the PC, the driver displayed is an
invalid one when connects to the SP module again.