Hitachi CP-TW2503 User Manual page 146

Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon
146
Cases not involving a machine defect
This may be due to exhaustion of the battery of the pen.
This may be due to poor contact of the battery in the
pen.
There may be obstacles in between the interactive pen
and sensors (Camera) on the projector.
The LiveViewer may not display the annotations that
are made by Starboard Software.
IN HDMI
Reference
COMPUTER
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