Epson Projector Emp 7850 User Manual

							40 EMP-7850 User’s Guide
Turning the Projector OffFollow the procedure below to turn the projector off.
PROCEDURE
Turn the power off for the signal sources that are 
connected to the projector.
Check that the power for all connected components has been 
turned off.Press the [Power] button on either the remote control 
or the projectors control panel.
The following confirmation message will appear.
If you do not want to turn the power off, press a button other 
than any of the following:
 At the remote control: [Power], [ ], [ ], [ ], [Num], [ID]
 At the control panel : [Power]
If you do not press any button, the message will disappear 
automatically after seven seconds. (The power will not turn off 
at this time.)
Press the [Power] button on either the remote control 
or the projectors control panel once more.
The lamp will switch off. The   indicator will flash orange and 
cool-down
 will start. 
The cool-down period lasts for about 30 seconds.
When cool-down is complete, the   indicator lights orange.
12
Remote control
Power OFF?
Yes
:Press         button
No
:Press any other button
CAUTION
If the message The projector is overheated. Clean or replace the air 
filter and lower the room temperature. appears on the screen, press 
the [Enter] button on the remote control or the [Auto/Enter] button on 
the projectors control panel  to turn the power off and then clean the 
air filters.   p.1193
Stops flashing and lights orange
TIP
The remote control and projectors control panel buttons cannot be 
operated while the   indicator is flashing orange. Wait until it lights 
constantly. 
						

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Turning the Projector OffEMP-7850 User’s Guide
If not using the projector for a long period, unplug the 
power cable from the electrical outlet.Set the [R/C] switch to OFF.
Attach the lens cover.
Attach the lens cover to the lens when not using the projector, 
in order to stop the lens from getting dusty or dirty.
4
CAUTION
Do not disconnect the power cable from the electrical outlet while the 
 indicator is flashing orange, otherwise operating problems may 
result.5
TIP
If you leave the [R/C] switch on the remote control at ON, it will 
consume battery power. When not using the remote control, set the 
[R/C] switch to OFF.
6
Lens cover 
						

							42 EMP-7850 User’s Guide
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.15
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.15
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.63
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.103, p.119 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. 
						

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Adjusting the Screen ImageEMP-7850 User’s Guide
Adjusting 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.44
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.46If 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.47, p.49Tilting the projector vertically with respect to the screen
When projecting from the side of the screen 
						

							44
Adjusting the Screen ImageEMP-7850 User’s Guide
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 upwards 
and 4º downwards.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 Feet
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.45
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 automatic 
keystone correction may not be carried out correctly.
Extend Retract Rear 
adjustable foot 
						

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Adjusting the Screen ImageEMP-7850 User’s Guide
Manually 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 when 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.46, Vertical correction and 
horizontal correction p.47, Height Correction p.48
 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.49
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 change 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 
						

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Adjusting the Screen ImageEMP-7850 User’s Guide
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.42
 If the images become uneven in appearance after keystone 
correction is carried out, decrease the sharpness.   p.76, p.79
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.47
 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.83 
						

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Adjusting the Screen ImageEMP-7850 User’s Guide
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:   p.83 Setting - 
Keystone - H/V-Keystone
If you use the horizontal correction function when height correction 
adjustment has already been carried out, the height correction adjustment 
will be cancelled.
PROCEDURE
Vertical 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.49
When carrying out vertical correction and horizontal correction, 
select H/V-Keystone and then make the correction.   p.83
ProjectorProjector If the top of the 
image is elongatedIf the bottom of the 
image is elongatedProjectorProjector If the left edge of the 
image is elongatedIf the right edge of the 
image is elongated 
						

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Adjusting the Screen ImageEMP-7850 User’s Guide
When Automatic keystone correction or 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 Correction
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.1
[    ]: Select [ ESC ]: Return
[Menu]: Exit
[    ]: Adjust
Video
AudioSettingUsers Logo
Advanced1Reset All About Advanced2 Effect
Auto Keystone
:
Height
:    0
+
-
Keystone
H-Keystone
:
0
+
-
V-Keystone
:3232
+
-
ONOFF
2
[    ]:[    ]: Select Select
[ ESC ]:[ ESC ]: Retur Return
[Men
[Menu]:u]: Exit Exit
[    ]:[    ]: Adjust Adjust
VideoVideoAudioudioSettingUsers LogoUsers LogoAdvAdvanced1anced1Reset AllReset AllAboutAboutAdvAdvanced2anced2EffEffectect
Auto KeystoneAuto Keystone
:
HeightHeight
:  48  48
+
-
Keystone
H-Keystone
:0
+
-
V-KeystoneV-Keystone
:3232
+
-
ONONOFF
3 
						

							49
Adjusting the Screen ImageEMP-7850 User’s Guide
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.83
PROCEDURE
Press the [ ], [ ], [ ] or [ ] button on the 
projectors control panel.
The Quick Corner correction screen will be displayed.
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.47 
When carrying out Quick Corner correction, select Quick Corner 
and then make the correction.   p.83
1
[          ]:Adjust[    ]      :Move next[ESC]   :Return (Press 1 second to
reset)
/