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Adjusting the installation angle
z It is possible to adjust the horizontal swing and also the horizontal and vertical rotation of the ceiling mount
bracket. Adjustments should be carried out in order to make the center of the projector lens perpendicular to
the surface of the projection screen.
z While referring to the operating instructions for the projector, project a picture onto the screen and then adjust
the picture size and focus. After making these adjustments, adjust the ceiling mount bracket angle.
When installed using ceiling brackets for high ceilings
■If the picture is too far to the left or right of the screen
Correction angle ±1.2°
■If the picture is too far to the top or bottom of the screen
Correction
angle 5°
above
horizontal
Loosen the captive washer hex
head bolts, captive washer (each two on left
side and right side)
Correction angle 17° below horizontal
■If the picture is tilted to the left or right
Correction
angle
±2.5°
Loosen the hex head bolt, captive
washer (each three on front side and
rear side)
Attention
z After checking the position adjustments, check that the screws have been tightened to the torques specified on page 3.
Note
z If there is a vertical keystone effect even after adjusting the installation angle, the positional relationship
between the screen and the projector is out of alignment. Check that the screen and projector are aligned
opposite each other.
Alternatively, perform the keystone correction at the projector.
A Loosen the hex bolts at the ceiling of the after-
Hex nut retaining
ceiling mount bolt
Adjustable
span
Attention
z If centers of the screen and projector are not in
alignment, adjust by using the shift lens.
B Once the picture position has been set, be sure
A Loosen the captive washer hex head bolts (each
Adjustable
span
B Once the picture position has been set, be sure
Attention
z Do not loosen too far the captive washer hex head
bolt that attach the angle adjusting bracket to the
projector mount bracket as the projector may fall off.
A Loosen the captive washer hex head bolts (each
B Once the picture position has been set, be sure
Adjustable span
Attention
z Do not loosen too far the captive washer hex head
bolts that attach the angle adjusting bracket to the
projector mount bracket as the projector may fall off.
plate at four places and then move the projector
to the left or right to adjust so that the center of
the screen is aligned along a vertical line.
to retighten the nuts securely at four places.
two on left side and right side) that attach the
angle adjusting bracket to the pole base, then tilt
the projector until the picture is centered on the
screen.
to retighten the captive washer hex head bolt,
captive washer at four places securely.
three on front side and rear side) that attach the
angle adjusting bracket to the projector mount
bracket and then rotate the projector around its
optical axis until the picture edges are aligned
with the screen frame.
to retighten the captive washer hex head bolts
securely.
11
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