Epson Powerlite 7850p Multimedia Projector Users Guide

							Displaying and Adjusting the Image21
Troubleshooting Display Problems
Follow these guidelines if you’re having trouble displaying an image.
You Can’t Project an Image
If you see a blank screen or a blue screen with the No Signal message, 
try the following:
■Make sure the cables are connected correctly, as described in 
Chapter 3.
■Make sure the power light is green and not flashing and the lens 
cap is off. 
■If you’ve connected more than one computer and/or video source, 
you may need to press one of the 
Source buttons on the 
projector’s control panel or the remote control to select the 
correct source. (Allow a few seconds for the projector to sync up 
after pressing the button.)
■If you’re using a PC laptop, press the function key on your 
keyboard that lets you display on an external monitor. It may be 
labelled 
CRT/LCD or have an icon such as  . You may have 
to hold down the 
Fn key while pressing it. Allow a few seconds for 
the projector to sync up after changing the setting.
The Projector and Laptop Don’t Display the 
Same Image
If you’re projecting from a laptop, and you can’t see your image on the 
projection screen and on your computer at the same time, follow these 
guidelines.
If you’re using a PC laptop:
■On most systems, there’s a function key that lets you toggle 
between the LCD screen and the projector, or display on both at 
the same time. It may be labelled 
CRT/LCD or with an icon such 
as  . You may have to hold down the 
Fn key while pressing 
it. Allow a few seconds for the projector to sync up after changing 
the setting. 
No Signal 
						

							22Displaying and Adjusting the Image
■If the function key doesn’t permit you to display simultaneously 
on both screens, you should check your monitor settings to make 
sure both the LCD screen and the external monitor port are 
enabled. 
From the Control Panel, open the 
Display utility. In the Display 
Properties dialog box, click the 
Settings tab, then click 
Advanced. The method for adjusting the settings varies by 
brand; you may need to click a 
Monitor tab, then make sure the 
external Monitor port is set as your primary display and/or 
enabled. See your computer’s documentation or online help for 
details. 
If you’re using Macintosh OS 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 
System Preferences, then select 
Displays.
2. Make sure the 
VGA Display dialog box is selected.
3. Click the 
Arrange (or Arrangement) tab.
4. Make sure the 
Mirror Displays checkbox is selected.
Select the 
VGA Display 
dialog box
Make sure 
Mirror Displays 
is checked 
						

							Displaying and Adjusting the Image23
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 
						

							24Displaying and Adjusting the Image
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 25.
■If the image isn’t square, see page 26.
■If a computer image displays incorrectly, see page 28. 
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 39 for instructions. 
Focus ring Zoom ring 
						

							Displaying and Adjusting the Image25
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 or level the image 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 rear foot 
						

							26Displaying and Adjusting the Image
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 27).
■If the image has no parallel sides, you can adjust its shape using 
Quick Corner
™ (see page 37). 
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 
						

							Displaying and Adjusting the Image27
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.
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 129.
Keystone 
buttons
Menu 
button 
						

							28Displaying and Adjusting the Image
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 bands 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.
note
You must be projecting an 
image for this button to have 
any effect. The 
Auto button 
works only with computer 
images.
Auto button 
						

							Displaying and Adjusting the Image29
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 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.)
3. Press the 
Power button again. The power light flashes orange for 
about 40 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 
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. 
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 Power button. If 
you are done using the 
projector, unplug the power 
cord. To turn off sleep mode, 
see page 139.
Power button
Power OFF?Power OFF?
Yes Yes : : Press         buttonPress         buttonNo No : : Press any other buttonPress any other button
caution
To avoid damaging the 
projector or lamp, never 
unplug the power cord when 
the power light is green or 
flashing orange. 
						

							30Displaying and Adjusting the Image