Panasonic PT-LB355U Operating Instructions Manual page 14

For PT-LB305D, keystone correction in the horizontal direction is not supported. If the projector is tilted horizontally, horizontal
trapezoidal distortion cannot be corrected.
Within 30°
Within 30°
rCautions when setting the projectors
f Use the adjustable foot only for adjusting the angle. Using them for other purposes may damage the projector.
f When installing the projector with a method other than the floor installation or the ceiling installation using the ceiling mount
bracket, use the four screw holes for ceiling mount (as shown in the figure) to fix the projector.
In such case, make sure that there is no clearance between the screw holes for ceiling mount on the projector bottom and
the setting surface by inserting spacers (metallic) between them.
f Use a torque screwdriver or Allen torque wrench to tighten the fixing screws to their specified tightening torques. Do not use
electric screwdrivers or impact screwdrivers.
(Screw diameter: M4, tapping depth inside the projector: 10 mm (13/32"), screw tightening torque: 1.25 ± 0.2 N·m)
f Do not stack the projectors.
f Do not use the projector supporting it by the top.
f Do not block the ventilation ports (intake and exhaust) of the projector.
f Avoid heating and cooling air from the air conditioning system directly blow to the ventilation ports (intake and exhaust) of
the projector.
over 500 mm
(19-11/16")
over 500 mm
(19-11/16")
14 - ENGLISH
Chapter 1 Preparation - Precautions for use
Positions of screw holes for ceiling mount and
adjustable foot
over 1 000 mm
(39-3/8")
Within 15°
Within 15°
Adjustable foot
Screw holes for
ceiling mount (M4)
over 200 mm
(7-7/8")