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Epson 745c - PowerLite XGA LCD Projector マニュアル

Positioning the Projector

Before connecting the projector, you need to decide where to

place it. The location you choose depends on the size of the

room and what you are projecting.

❏ Place the projector on a sturdy, level surface, between

3.2 and 39.7 feet from the screen.

❏ Make sure there is plenty of space for ventilation around and

under the projector. Do not set the projector on top of

anything that could block the vents under the projector.

❏ Make sure the projector is within 10 feet of an electrical

outlet or extension cord and within 5 feet of your computer

and/or video source, unless you are projecting wirelessly or

from a memory card.

❏ Place the projector directly in front of the center of the

screen, facing the screen squarely. Otherwise, your image

will not be rectangular.

Note:

It's easier to position the projector when the screen is directly in

front of the room.

Use the figure below as a guideline to help you determine how

far from the screen to place the projector. Image size generally

increases with distance, but may vary depending on how you

position the zoom ring and whether you have adjusted the

image size with other settings.

33.1 to 39.7 feet

6.6 to 7.9 feet

To calculate exact measurements, use the following formulas:

❏ To find the projection distance when you know the screen's

diagonal dimension:

Wide (inches) = ((33.696

21.717) / 25.4

Tele (inches) = ((40.453

22.52) / 25.4

❏ To find how large a screen's diagonal dimension will be

when you know the projection distance:

Wide (inches) = (Projection distance [inches]

0.02171) / 0.033696

Tele (inches) = (Projection distance [inches]

0.02252) / 0.040453

3.2 to 3.9 feet

diagonal screen size [inches]) –

0.0254

If you place the projector below the level of the screen, you'll

have to tilt it up by extending the front adjustable foot, as

shown. Tilting the projector upward causes the image to lose its

rectangular shape, but you can correct the distortion by pressing

the

buttons on the projector. See page 6 for detailed

Sync

information about correcting the image shape.

If you place the projector level with the bottom of the screen,

the image will be rectangular and you won't have to adjust it. If

you place the projector higher than the bottom of the screen,

the image will still be rectangular, but you won't be able to fill

the whole screen with the image.

Starting Up the Projector

Make sure your projector and other equipment are set up and

connected correctly. Then turn on your projector, as described

below.

If you turn on your connected computer or video equipment

before starting the projector, the projector automatically detects

and displays the image source. If you turn on the projector first,

or have multiple pieces of connected equipment, you may have

to select the image source manually. See "Selecting the Image

Source" on page 5.

Follow these steps to plug in and turn on the projector:

1. Remove the lens cap.

Caution

Do not use the projector with the lens cap in place. The heat

generated by the lamp can damage the cap.

2. Connect one end of the power cord to the projector's power

inlet. Then connect the other end to an electrical outlet.

The P

Power

indicating that the projector is receiving power but not yet

turned on.

8/04

Epson PowerLite 745c Projector

light on top of the projector turns orange,

Epson PowerLite 745c Projector