Optoma DC350 Manual Del Usuario página 25

When using the document camera :
Problem
The image is fuzzy.
The image is reverse.
The image dose not move.
Remote control can not
work.
The display device displays
"MEMORY ERROR" or
"CARD ERROR" message.
Or memory card cannot
be read.
Cause
Probably the distance of
object is too close to the
lens.
The document is not put in
the recommend working
area.
Camera image is set to
Freeze [ ].
No power.
Object is blocking the
remote control signal
receiver of the document
camera.
The distance of usage is
too far.
The format of the memory
card is not compatible with
the product.
The memory card is
corrupted.
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Solution
Press AF button to auto
focus or adjust by pressing
Manual Focus.
Select Macro mode if the
distance is less 25cm.
Press [ ] button to adjust
the direction.
Press the [ ] button on
the control panel again to
unpause.
Replace the AAA batteries in
the remote control.
Remove obstruction in front
of the product.
Stand closer to the product
to use the remote control.
Use the "Format" function
of the document camera to
format the card.
Replace the memory card
with a new one.