Epson Projector Emp 7800 User Manual

							40
Adjusting the Screen ImageYou can correct and adjust the screen images in order to obtain the best 
possible pictures.Adjusting the Image Size (Zoom Function)
The size of the projected images is basically determined by the distance 
from the projector to the screen.   p.16
The following procedures explain how to adjust the screen images once the 
projector itself has been set up.PROCEDURETurn the zoom ring on the projector to adjust the image.
If a standard lens is fitted, the images can be enlarged in this way to 
1.35 times the normal size.
If you would like to enlarge the images further, move the projector 
further away from the screen.   
p.16
Focusing the Screen Images (Focus Adjustment)
PROCEDURETurn the focus ring to adjust the image focus.
TIP
The E-Zoom function can also be used to enlarge parts of the images. 
 p.61
Turn to W to 
increase the size
Zoom ringTurn to T to 
reduce the size
Focus ring
TIP
 If the surface of the lens is dirty or misted over as a result of 
condensation, it may not be possible to adjust the focus correctly. If 
this happens, clean or de-mist the lens.   p.117, p.124
 If using the standard lens and the projector is positioned outside the 
normal projecting range of 77–1113 cm (2.5–36.5 ft.), it may not be 
possible to obtain the correct focus. If you have trouble obtaining the 
correct focus, check the projection distance. If an optional lens is fitted, 
refer to the documentation for the optional lens for further details. 
						

							41
Adjusting the Screen ImageAdjusting the Image Angle
If the projector is set up so that it is at a horizontal or vertical angle to the 
screen, adjust as follows.
If the images are being projected onto a screen that is higher than the 
position of the projector, extend the front adjustable foot to tilt the 
projector.  p.42
If the images are being projected onto a screen that is lower than the 
position of the projector, lift up the back of the projector to tilt it.
When the projector is tilted in this way, it may cause keystone distortion to 
appear in the images. If this happens, you can use the keystone correction 
function to correct this distortion.   p.44If the projector cannot be set up directly in front of the screen, you can 
project images at a horizontal angle to the screen. If keystone distortion 
appears in the images, you can use the projectors H-Keystone and 
Quick Corner functions to correct this keystone distortion.   p.45, p.47Tilting the projector vertically with respect to the screen
When projecting from the side of the screen 
						

							42
Adjusting the Screen Image
The front adjustable foot and the rear adjustable feet can be extended and 
retracted to adjust the tilt of the projector to a maximum of 12º upward and 
4º downward.
PROCEDUREWhile pulling the foot adjust lever at the front of the 
projector, lift up the front of the projector to extend the 
front adjustable foot.
Extend the front adjustable foot until the desired angle is obtained, 
and then release the foot adjust lever.
To retract the front adjustable foot, gently push down on the projector 
while pulling the foot adjust lever. Adjusting the Feets
TIP
If you use the front adjustable foot and the rear adjustable feet to 
adjust the tilt of the projector, it may cause keystone distortion to 
appear in the projected images. If this happens, the Auto Keystone 
function will operate to automatically project images without keystone 
distortion. 
  
p.43
Foot adjust lever (Front)
TIP
If the projector is tilted vertically or horizontally, turn the bases of the 
rear adjustable feet to make fine adjustments to the height of the 
projector. When the projector is tilted horizontally, the correction may 
not be carried out correctly.
Extend Retract Rear 
adjustable foot 
						

							43
Adjusting the Screen ImageManually Correcting Keystone Distortion
This projector is equipped with an automatic keystone correction function 
that detects the vertical angle of the projector during projection and 
automatically corrects vertical keystone distortion. If you would like to 
make further fine adjustments after automatic keystone correction has been 
carried out, or if the projector is tilted horizontally, you can carry out 
keystone correction manually.This projector is equipped with the following two keystone correction 
functions. Use whichever function is appropriate for the keystone 
distortion that appears.
 Auto Keystone/H/V-Keystone
Automatic keystone automatically corrects keystone distortion when the 
projected images are vertically distorted.
H/V-Keystone can be used to make fine adjustments to the results of 
automatic keystone correction and to correct horizontal keystone 
distortion.
The keystone correction function lets you easily correct keystone 
distortion that has occurred after moving the projector, simply by using 
buttons on the projectors control panel.
See Automatic keystone correction   p.44
Vertical correction and horizontal correction   p.45
Height Correction   p.46
 Quick Corner:
This correction function is used when both horizontal and vertical 
keystone distortion occurs in the projection area to adjust the projection 
area so that it fits the screen exactly.   p.47
TIP
If the projector is tilted within a range of approximately 30º up or 
down, keystone correction is carried out automatically. If the 
projector is tilted within a range of approximately 40º up or down or 
20º to the left or right, manual keystone correction can be carried out.
However, the applicable angles will become smaller under the 
following conditions.
 If the projector has been tilted both horizontally and vertically
 If an optional projection lens has been fitted
 When the zoom is set to W 
						

							44
Adjusting the Screen Image
When the projector has been tilted vertically, automatic keystone 
correction is carried out so that images with no distortion are projected.
Automatic keystone correction is carried out approximately one second 
after the projector is set up and projection starts. A vertical keystone 
correction gauge appears on the screen while automatic adjustment is in 
progress.
TIP
 The Auto Keystone, H/V-Keystone and Quick Corner 
functions cannot both be used together to correct keystone distortion. 
If you use one function to correct keystone distortion, any correction 
that has been applied using the other function will be cancelled.
 The larger the angle of tilt, the poorer the focus of the contours in 
the projected images will become.
 If a large amount of keystone correction is applied, fine details such 
as text characters and lines may go out of focus.
 Keystone corrections that have been applied using the keystone 
correction functions are memorised even when the projectors power 
is turned off. If you have changed the projection position or angle, 
you will need to repeat the correction procedure.
 H-Keystone and Height cannot be used at the same time.
 When keystone correction is carried out, the projected images will 
become smaller. Use the zoom function to adjust the size of the 
images if necessary.   p.40
 If the images become uneven in appearance after keystone 
correction is carried out, decrease the sharpness.   p.75, p.78
Automatic keystone correction
TIP
 Automatic keystone correction is not carried out if Rear Proj. or 
Ceiling in the Advanced1 menu is set to ON, or if the 
projection area has been corrected manually using the Quick 
Corner function.
 If you would like to make further fine adjustments after automatic 
keystone correction has been carried out, or if the projector is tilted 
horizontally, you can carry out keystone correction manually. 
 p.45
 If you do not want automatic keystone correction to be carried out, 
change the Auto Keystone setting in the H/V-Keystone sub-
menu of the Keystone command in the Setting menu to OFF. 
 p.82 
						

							45
Adjusting the Screen Image
Vertical correction and horizontal correction can be carried out using either 
the projectors control panel or the configuration menus. This procedure 
explains how to use the projectors control panel to correct keystone 
distortion.
For adjustment using the configuration menus: - Setting - Keystone - 
H/V-Keystone  p.82
If you use the horizontal correction function when height correction 
adjustment has already been carried out, the height correction adjustment 
will be cancelled.
PROCEDUREVertical correction and horizontal correction
TIP
If Quick Corner is selected in the Keystone sub-menu of the 
Setting menu, the Quick Corner correction screen will be 
displayed if you press the [ ], [ ], [ ] or [ ] buttons.   p.47
When carrying out vertical correction and horizontal correction, 
select H/V-Keystone and then make the correction.   p.82
ProjectorProjector If the top of the 
image is elongatedIf the bottom of the 
image is elongated
ProjectorProjector If the left edge of the 
image is elongatedIf the right edge of the 
image is elongated
TIP
If the value displayed in the gauge on the screen stops changing when 
vertical correction and horizontal correction is being carried out, it 
indicates that the limit for vertical correction and horizontal 
correction has been exceeded. Check that the projector has not been 
set up at an angle which exceeds the proper limit. 
						

							46
Adjusting the Screen Image
When Automatic keystone correction and horizontal correction is carried 
out, the height of the projected images will become shorter. Use the height 
correction function to adjust the height of the projection area.
The height correction function is accessible from the configuration menu.
This cannot be set when vertical correction is carried out.
PROCEDURE
Press the [Menu] button on either the remote control 
or the projectors control panel. Then select Height 
from the H/V-Keystone sub-item of the Keystone 
command in the Setting menu.
For details, refer to Using the Configuration Menus   p.92
Tilt the [ ] button on the remote control to the left or 
right, or press the [ ] or [ ] buttons on the 
projectors control panel to correct the height while 
viewing the projected images.When the adjustment is complete, press the [Menu] 
button on the remote control or the projectors 
control panel to close the configuration menu.
Height Correction1
[    ]: Select [ ESC ]: Return
[Menu]: Exit
[    ]: Adjust
Video
AudioSettingUsers Logo
Advanced1Reset All About Advanced2 Effect
Auto Keystone
:
Height
:    0
+
-
Keystone
H-Keystone
:
0
+
-
V-Keystone
:32
+
-
ONOFF
2
[    ]:[    ]: Select Select
[ ESC ]:[ ESC ]: Retur Return
[Men
[Menu]:u]: Exit Exit
[    ]:[    ]: Adjust Adjust
VideoVideoAudioudioSettingSettingUsers LogoUsers LogoAdvAdvanced1anced1Reset AllReset AllAboutAboutAdvAdvanced2anced2EffEffectect
Auto KeystoneAuto Keystone
:
HeightHeight
:  48  48
+
-
KeystoneKeystone
H-KeystoneH-Keystone
:0
+
-
V-KeystoneV-Keystone
:32
+
-
ONONOFFOFF
3 
						

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Adjusting the Screen Image
Quick Corner correction can be carried out using either the projectors 
control panel or the configuration menus. This procedure explains how to 
use the projectors control panel to correct keystone distortion.
If using the configuration menu: Setting - Keystone - Quick Corner 
 p.82
PROCEDURE
Press the [ ], [ ], [ ] or [ ] button on the 
projectors control panel.
The Quick Corner correction screen will be displayed.
Press the [Auto/Enter] button on the projectors 
control panel and then select the corner to be 
corrected on the screen. 
You can also press the [Enter] button on the remote control to 
select the corner.
Correcting Keystone Distortion so that the Projection 
Area Fits the Screen Exactly (Quick Corner)
TIP
If H/V-Keystone is selected in the Keystone sub-menu of the 
Setting menu, the V-Keystone or H-Keystone adjustment gauge 
will be displayed if you press the [ ], [ ], [ ] or [ ] buttons. 
 p.45 
When carrying out Quick Corner correction, select Quick Corner 
and then make the correction.   p.821
[          ]:Adjust[    ]      :Move next[ESC]   :Return (Press 1 second to
reset)
/
2
[          ]:Adjust[    ]      :Move next[ESC]   :Return (Press 1 second to
reset)
/
The selected 
angle will 
appear yellow. 
						

							48
Adjusting the Screen Image
Press the [ ], [ ], [ ] and [ ] buttons on the 
remote control to correct the angle position.
You can also tilt the [ ] button on the remote control to correct 
the angle position.
When the adjustment is complete, press the [Menu] 
button on either the remote control or the projectors 
control panel to close the configuration menu.
3
[          ]:Adjust[    ]      :Move next[ESC]   :Return (Press 1 second to
reset)/
Screen
TIP
 If you press down the [ESC] button on the remote control or the 
projectors control panel for one second while the Quick Corner 
correction screen is displayed, the correction results will be restored 
to their default values.
 If the message Cannot move anymore. appears on the screen 
while using the Quick Corner function, it means that the limit for 
correction has been reached. Check the following two points.
· Is the projection distance appropriate for the size of the projection 
screen?  p.16
· Is the projector tilted too much?   p.43
 If the input signal is interrupted or an image signal that is not 
supported is input while using the Quick Corner function, the 
correction value at that point will be recorded and the Quick Corner 
function will be cancelled.
 When the Quick Corner correction screen is displayed, the following 
functions will be cancelled.
· E-Zoom function  · Real display   · Freeze
4 
						

							49
Adjusting the Image QualityThe quality of the projected images can be adjusted as follows.Projecting Easy-to-see Images Without a Screen  (Wall Shot)
When the Wall Shot function is used, images can be projected without loss 
of original colour even onto surfaces such as blackboards and coloured 
wall surfaces which are being used instead of a screen. For example, if 
projecting onto a green blackboard, the projected images would normally 
appear greenish and be very difficult to see. The Wall Shot function uses a 
sensor to measure the condition of the projection surface and automatically 
adjusts the colour of the projected images based on these measurements.
The Wall Shot function also allows shading to be adjusted. If projecting 
onto a screen that is located near a window, the Wall Shot function can be 
used to obtain clear images when they might otherwise appear faded.
PROCEDUREThe Wall Shot function can be operated using either the remote control or 
the projectors control panel.
Press the [Wall Shot] button on either the remote 
control or the projectors control panel while the 
images are being projected.
When the button is pressed, the current status is displayed on 
the screen.
TIP
Wall Shot can be used for adjustment if the projection distance is 
within approximately 80–1000 cm (2.6–32.8 ft.). However, this 
distance will vary depending on the condition of the projected surface, 
for instance if the projection surface is an extremely reflective surface 
such as a whiteboard, or if it is a highly non-reflective surface such as 
a dark wall.
1
Remote control