20
(GB)
Installation
Installation
Modifying Parts
Changing the Polarity
The polarity of the projector is adjusted at the factory to use the projector
for front projection on the floor.
When the projector is installed on the ceiling or used in rear projection, it
is necessary to change the settings of the polarity switches.
How to change the polarity
1
Turn off the power of the projector.
2
Open the control panel cover, loosen the screw, and open the cover of
the polarity switches.
3
Change the position of the polarity switches (V and H switches), if
necessary.
4
Close the cover of the polarity switches, tighten the screw and close
the control cover.
Note
If the cover of the polarity switches does not shut firmly, the power of the
projector is not turned on in order to protect the CRTs.
Loosen
Open
Push the control panel cover and
slide it to open.
V switch
H switch
L
R
L
R
Upper
Right
Left
Lower
Summary of Contents for VPH-G90E
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