Epson Powerlite 7900p Multimedia Projector Users Guide

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If you’re using OS 8.6 to OS 9.x:
You may need to set up your system to display on the projector screen 
as well as the LCD screen. Follow these steps:
1. From the Apple menu, select 
Control Panels, then click 
Monitors or Monitors and Sound.
2. Click the Arrange icon.
3. Drag one monitor icon on top of the other. 
If the Arrange option isn’t available, you may need to select one of the 
Simulscan resolution settings:
1. Click the 
Monitor icon. 
2. Select a 
Simulscan resolution as shown. (Allow a few seconds for 
the projector to sync up after making the selection.) 
Click here
Drag one monitor
icon on top of
the other
Select a 
Simulscan 
resolution
Click here 
						

							42Projecting
Adjusting the Image
Once you see your image, you need to make certain adjustments:    
■To focus or zoom your image, see below. 
■If the image is too high or too low, you can reposition it. See 
page 43.
■If the image isn’t square, see page 44.
■If a computer image displays incorrectly, see page 47. 
If you need to fine-tune the image and/or sound, see Chapter 4.
Focusing and Zooming Your Image
Use the Focus ring on the projector to sharpen the image.
Use the 
Zoom ring on the projector to reduce or enlarge the image. 
Move the tab toward the 
W to increase the size, and toward the T to 
decrease it.
If the image still isn’t large enough, you may need to move the 
projector farther away from the screen. You can also use the 
E-Zoom 
buttons on the remote control to zoom in on a portion of the image. 
See page 57 for instructions. 
Focus ring Zoom ring 
						

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Adjusting the Height of Your Image
If the image is too low on the screen, you can use the front adjustable 
foot to raise it. 
1. Stand behind the projector. Press the blue foot release lever up 
and lift the front of the projector. 
2. Once the image is positioned where you want it, release the lever 
to lock the foot in position.
3. If necessary, you can fine-tune the height by turning the 
projector’s rear feet. 
Raising the projector causes the image to distort or “keystone,” but 
you can manually correct the shape as described in the next section.
Projector foot 
						

							44Projecting
Adjusting the Image Shape
In most cases, you can maintain a square or rectangular image by 
placing the projector directly in front of the center of the screen with 
the base of the lens level with the bottom of the screen. 
Even if the projector is slightly tilted (within a range of 40° up or 
down), the projector has an automatic keystone correction function 
that detects and corrects vertical keystone distortion.
It takes about one second after projection starts for the image to be 
corrected. During this time, a vertical keystone correction gauge 
appears on the screen. 
If your image is still distorted, you can correct it using either of these 
methods: 
■If the image has two parallel sides but is wider on one side (top, 
bottom, left, or right), you can correct it using the 
Keystone keys 
on the projector’s control panel or the projector’s Keystone menu 
(see “Using Keystone Correction” on page 45).
■If the image is trapezoid-shaped (no two sides are parallel), you 
can adjust its shape using Quick Corner
™ (see page 45). 
You cannot use both keystone correction and Quick Corner at the 
same time. 
Corrected image Projector tilted up Projector tilted down
Quick Corner correctionKeystone correction
Keystone correction 
						

							Projecting45
Using Keystone Correction
To adjust your image when it is wider on one side, do the following:
■Look at the shapes of the icons on the projector’s four Keystone 
buttons. Press the button whose icon is the mirror image of the 
shape of your screen image. Continue pressing the button until 
you are satisfied with the shape of the image.
■Or press the Menu button on the remote control, select the 
Setting menu, and press Enter. From the Setting menu, select 
H/V-Keystone in the Keystone menu and press Enter. Select 
V-Keystone (for vertical keystone distortion) or H-Keystone (for 
horizontal keystone distortion) and press 
Enter. Use the   
pointer button on the remote control to adjust the keystone 
setting as needed.
Using Quick Corner
Use Quick Corner to correct a trapezoid-shaped image, with no 
parallel sides: 
1. Press the 
Menu button on the remote control (or on the 
projector’s control panel).
2. Select the 
Setting menu and press Enter. 
3. From the Setting menu, select 
Keystone and press Enter. 
4. Select 
Quick Corner and press Enter.
note
The image will be slightly 
shorter after adjusting. If it’s 
important to maintain the 
correct aspect ratio, use the 
menu system to perform 
keystone correction, then 
adjust the Height setting as 
needed. See page 71.
Keystone 
buttons
Menu 
button
note
For more information on 
using the menu system, see 
Chapter 4. 
						

							46ProjectingYou see this screen:
5. Press the 
Enter button to select the corner you want to adjust.
6. Use the  pointer button on the remote control (or the arrow 
buttons on the projector) to adjust the shape. 
7. Repeat steps 5 and 6 as needed to adjust any remaining corners. 
8. When done, press the 
ESC button on the remote control or 
projector’s control panel to exit the menu system.
If 
Quick Corner remains selected in the Keystone menu, the Quick 
Corner screen appears whenever you press the projector’s 
Keystone 
buttons. You can then follow steps 5 through 8 above to correct the 
shape of your image, or press 
ESC to exit Quick Corner.
[                    ]:AdjustAdjust
[    ]      :Move next[    ]      :Move next
[ESC][ESC]      :Return (Press 1 second to:Return (Press 1 second toreset)reset)
/
note
If you are not satisfied with 
the corrections made, press 
the 
ESC button for one 
second to reset the screen to 
its original shape. 
						

							Projecting47
Correcting Computer Images
If you’re connected to a computer and the image doesn’t look right, 
press the 
Auto button on the remote control (or the Auto/Enter 
button on the projector’s control panel). This automatically resets the 
projector’s tracking, sync, resolution, and position settings.
If vertical stripes appear in the projected image and the 
Auto button 
doesn’t correct the problem, hold down the 
Shift button on the 
projector’s control panel while pressing either the 
Tracking + or the 
Tracking – button.
If the image appears fuzzy or flickers and the 
Auto button doesn’t 
correct the problem, hold down the 
Shift button while pressing either 
the 
Sync + or Sync – button.
Adjusting the Volume
You can use the buttons on the remote control or projector to increase 
or decrease the volume for the projector’s built-in speaker or external 
speakers connected to the projector. Press the   button to increase 
the volume, or the   button to decrease it.
note
You must be projecting an 
image for this button to have 
any effect. The 
Auto button 
works only with computer 
images.
note
You can also adjust the 
volume using the projector’s 
menu system. See page 73. 
						

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Projecting Images Without a Screen
Even if you don’t have a screen, you can project images onto surfaces 
like blackboards and colored walls without loss of image color. Your 
projector has a sensor that measures the conditions of the projection 
surface and automatically adjusts the colors and shading of your 
image. For example, if you’re projecting onto a surface near a window, 
your image appears clear and well-defined rather than faint.
Making Initial Color Corrections
Press the Wall Shot button on either the remote control or the 
projector’s control panel while projecting an image. 
Wall Shot’s status appears in the upper right corner of your screen. 
Then you see a sequence of colors flash for approximately five seconds 
while the sensor measures the conditions of the projection surface and 
adjusts the image.
When you turn the projector off, the projector stores the correction 
values obtained by the last Wall Shot measurements. This is useful if 
you’re projecting against the same surface and under the same 
conditions. To retrieve these corrections, just press the 
Wall Shot 
button again while projecting an image.
note
If the status message 
indicates that Wall Shot is 
off, press the 
Wall Shot 
button again to turn it on.
Wall Shot ON 
						

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Adjusting Color Corrections for a New Surface
Adjust the correction values if you’re projecting on a new surface or in 
a new location.
1. Press the 
Wall Shot button on the remote control or projector 
while you’re projecting an image. Wait for the Wall Shot status 
screen.
2. Press the 
Wall Shot button until you see Wall Shot 
Readjustment
 on the status screen. 
You see a sequence of colors flash for about five seconds as the 
projector adjusts the color correction values for the new 
projection surface. 
Shutting Down the Projector
When you’ve finished using the projector, follow the recommended 
procedure to shut it down. This extends the life of the lamp and 
protects the projector from possible overheating. 
1. Turn off and disconnect any equipment plugged into the 
projector. 
2. To turn off the projector, press the red P
Power button on the 
projector or remote control. 
You see a confirmation message. (If you don’t want to turn it off, 
press any other button.)
note
When the projector has not 
received any input signals 
for 30 minutes, it 
automatically turns off the 
projector lamp and enters 
“sleep mode.” This conserves 
electricity, cools the 
projector, and extends the 
life of the lamp. If you want 
to start projecting again, 
press the PPower button. 
If you are done using the 
projector, unplug the power 
cord. To turn off sleep mode, 
see page 76.
Power button
Power OFF?Power OFF?
Yes Yes : : Press         buttonPress         buttonNo No : : Press any other buttonPress any other button 
						

							50Projecting3. Press the P
Power button again. The power light flashes orange 
for about 30 seconds as the projector cools down. After the 
projector has cooled, the orange light stays on and the exhaust fan 
shuts off.
If you want to turn the projector on again, wait until the orange 
light stops flashing. Then press the P 
Power button.
4. If you extended the adjustable front foot, press up on the blue 
foot release lever to retract it.
5. Replace the lens cap and unplug the power cord.
6. If you’re using a remote control, set its ON/OFF switch to 
OFF. 
This conserves battery power.
caution
To avoid damaging the 
projector or lamp, never 
unplug the power cord when 
the P Power light is green 
or flashing orange.