Epson EPL7250 Product Information Guide - Page 4

EPSON PowerLite 5350/7250/7350 Projector Long Throw Zoom Lens Calculations If you are using the optional long throw zoom lens, use the following formulas. To determine the minimum and maximum diagonal size of an image when you know the projection distance: t Inches: Maximum diagonal size = (0.4742 × projection distance) + 3.2489 Minimum diagonal size = (0.2849 × projection distance) + 1.8968 t Centimeters: Maximum diagonal size = (1.2045 × projection distance) + 8.2521 Minimum diagonal size = (0.7236 × projection distance) + 4.8179 To determine the projection distance when you know the diagonal size of the screen image: t Inches: Maximum projection distance = (3.5094 × diagonal size) − 6.6568 Minimum projection distance = (2.1090 × diagonal size) − 6.8519 t Centimeters: Maximum projection distance = (8.9139 × diagonal size) − 16.9083 Minimum projection distance = (5.3569 × diagonal size) − 17.4038 Fixed Wide Angle Lens Calculations If you are using the optional fixed wide angle lens, use the following formulas. To determine the minimum and maximum diagonal size of an image when you know the projection distance: t Inches: Maximum diagonal size = (0.730 × projection distance) + 3.919 Minimum diagonal size = (0.616 × projection distance) + 3.050 t Centimeters: Maximum diagonal size = (1.8542 × projection distance) + 9.9542 Minimum diagonal size = (1.5646 × projection distance) + 7.7470 To determine the projection distance when you know the diagonal size of the screen image: t Inches: Maximum projection distance = (1.619 × diagonal size) - 4.702 Minimum projection distance = (1.367 × diagonal size) - 5.640 t Centimeters: Maximum projection distance = (4.1122 × diagonal size) - 11.9430 Minimum projection distance = (3.4721 × diagonal size) - 14.3256 Projector Status Lights The status lights on top of the projector tell you the projector's operating status. power light temperature light projection lamp light Caution: A red light warns you if a serious problem occurs. Power Light Light status Steady orange Steady green Flashing green Flashing orange Off Meaning Sleep mode. (The projector is plugged in, but not projecting.) Power and lamp are on. The projector is warming up. Allow about 30 seconds. The projector is cooling down. The power cord is not plugged in, there is no power to the electrical outlet, or there is an internal projector problem. Projection Lamp Light Light status Orange and red flashing alternately Steady red Flashing red Off Meaning Projection lamp needs replacing. Projection lamp has burned out. Replace lamp. Problem with projection lamp or lamp power supply. Lamp is functioning normally. Temperature Light Light status Flashing orange Steady red Flashing red Off Meaning Projector is too hot. Projector has turned off automatically because of overheating. Problem with the cooling fan or temperature sensor, causing overheating. The projector is functioning normally. 4 - EPSON PowerLite 5350/7250/7350 Projector 8/99