Epson EMP-7850 User manual

User’s Guide

1
EMP-7850 User’s Guide
Features of the Projector
Some examples of the projector's many useful functions include:
• Projecting images from a computer connected via a network.
• Automatically sending
email notifications if
errors occur with the
projector, such as if the
lamp cuts out during
projection.
Before using EasyMP,
refer to the EasyMP
Setup Guide and EasyMP
Operation Guide.
Images can be projected regardless of the location.
• The keystone distortion that occurs
as a result of the projector being
tilted using the front adjustable
foot can be corrected.
(Automatic keystone correction
p.46)
• The keystone distortion that occurs
when projecting from the side of
the screen can also be corrected.
(Vertical correction and horizontal
correction p.47)
• If vertical keystone correction causes the
height of projected images to be too
short, the height of the projection area can
also be adjusted. (Height correction
p.48)
• The Quick Corner function can be used
to correct the four corners of the
projection area to make the images fit the
screen exactly.
p.49
Images can be projected in places without a screen with no loss of original
colour.
This automatically adjusts image colours to their natural colours even when
projecting onto surfaces such as blackboards and partitions. p.51
Network Correspondence
Position adjustment function for a variety of projection screens
Wall Shot

2
Features of the ProjectorFeatures of the Projector
EMP-7850 User’s Guide
Optimum images can be projected simply by selecting the image quality
from the following five preset settings according to the projection
environment being used. No other colour adjustments are necessary.
p.56
• Dynamic • Presentation • Theatre • Living Room • sRGB
These functions allow you to indicate important points using a pointer and
draw straight lines and freehand curves to help make explanations easier to
understand. p.66
The projector can display images at high resolutions with a high degree of
luminance.
In addition, images can be switched to low luminance if they are too bright
when projecting in dark rooms or onto small screens. p.89
Colour mode function
Presentation
Theatre
Living Room
Effects functions
Brilliant, attractive images

3
EMP-7850 User’s Guide
Contents
Features of the Projector .......................................... 1
Before Using the Projector
Part Names and Functions ....................................... 6
Front/Top/Side ............................................................................. 6
Base .............................................................................................. 7
Rear .............................................................................................. 7
Remote Control ............................................................................ 8
Control Panel................................................................................ 9
Input/Output Ports ...................................................................... 10
Before Using the Remote Control ........................... 11
Inserting the Batteries................................................................. 11
Using the Remote Control and Remote Operating Range ......... 12
Installation............................................................... 14
Setting Up the Projector ............................................................. 14
Screen Size and Projection Distance.......................................... 15
Inserting and Removing Cards ............................... 16
Installation.................................................................................. 16
Removal ..................................................................................... 17
Connecting to a Computer ...................................... 18
Eligible Computers..................................................................... 18
Projecting Images from the Computer ....................................... 19
If Connecting More Than One Computer .................................. 23
Using the Remote Control to Operate the Mouse Pointer
(Wireless Mouse Function) ........................................................ 24
Connecting an External Monitor ................................................ 26
Connecting to a Video Source ................................ 27
Projecting Composite Video Images.......................................... 27
Projecting S-Video Images......................................................... 28
Projecting Component Video Images ........................................ 28
Projecting RGB Video Images................................................... 29
Playing Sound from the Video Equipment...............31
Playing Sound from External Speakers...................32
Connecting to a Digital Camera...............................33
Connecting to a Digital Camera Using a USB Cable.................33
Removing the USB Cable from the Projector ............................33
Basic Operations
Turning the Projector On .........................................35
Connecting the Power Cable ......................................................35
Turning the Power On and Projecting Images ...........................36
Selecting an Image Source While Viewing Projected
Images (Preview Function).........................................................38
Turning the Projector Off .........................................40
Adjusting the Screen Image ....................................42
Adjusting the Image Size (Zoom Function) ...............................42
Focusing the Screen Images (Focus Adjustment) ......................42
Adjusting the Image Angle.........................................................43
Manually Correcting Keystone Distortion .................................45
Adjusting the Image Quality.....................................51
Projecting Easy-to-see Images Without a Screen (Wall Shot)...51
Adjusting Computer Images.......................................................53
Selecting the Projection Quality
(Colour Mode Selection) ............................................................56
Adjusting the Volume...............................................57
Preventing theft (Password Protect)........................58
When Password Protect is enabled.............................................58
Entering a password with the remote control .............................59
Changing the Password Protect settings.....................................59

4
EMP-7850 User’s Guide
Advanced Operations
Functions for Enhancing Projection ........................ 62
A/V Mute Function .................................................................... 62
Freeze Function .......................................................................... 63
E-Zoom Function ....................................................................... 63
P in P (Picture in Picture) Function............................................ 64
Effect Function........................................................................... 66
Preset Function........................................................................... 68
Changing the Resize/Aspect Ratio............................................. 70
Projector ID/Remote Control ID ................................................ 73
Using the Configuration Menu Functions................ 75
List of Functions......................................................................... 76
Using the Configuration Menus .................................................92
Troubleshooting
Using the Help ........................................................ 95
Problem Solving...................................................... 97
Reading the Indicators................................................................ 97
When the Indicators Provide No Help ..................................... 100
Appendices
Maintenance ..........................................................119
Cleaning....................................................................................119
Replacing Consumables ...........................................................120
Saving a User's Logo ............................................126
Optional Accessories.............................................129
Glossary ................................................................130
List of ESC/VP21 Commands ...............................133
Command List ..........................................................................133
Communication Protocol..........................................................133
Cable Layouts...........................................................................134
USB Connection Setup.............................................................135
List of Supported Monitor Displays........................136
Specifications ........................................................137
Appearance ...........................................................139

Before Using the Projector
This chapter describes the procedures for setting up the projector before use.
Part Names and Functions................................... 6
• Front/Top/Side.......................................................................6
• Base.........................................................................................7
• Rear ........................................................................................7
• Remote Control .....................................................................8
• Control Panel.........................................................................9
• Input/Output Ports..............................................................10
Before Using the Remote Control ..................... 11
• Inserting the Batteries ........................................................11
• Using the Remote Control and
Remote Operating Range ...................................................12
• Using the Remote Control.............................................................................12
• Remote Operating Range ..............................................................................13
Installation........................................................... 14
• Setting Up the Projector .....................................................14
• Screen Size and Projection Distance..................................15
Inserting and Removing Cards.......................... 16
• Installation ...........................................................................16
• Removal................................................................................17
Connecting to a Computer................................. 18
• Eligible Computers .............................................................18
• Projecting Images from the Computer............................. 19
• If the Monitor Port is a Mini D-Sub 15-pin Port .......................................... 19
• If the Monitor Port is a 13w3 Port ................................................................ 20
• If the Monitor Ports are a 5BNC Ports ......................................................... 21
• If the Monitor Port is a Digital RGB Port..................................................... 22
• If Connecting More Than One Computer........................ 23
• Using the Remote Control to Operate the
Mouse Pointer (Wireless Mouse Function) ...................... 24
• Connecting an External Monitor ...................................... 26
Connecting to a Video Source ........................... 27
• Projecting Composite Video Images ................................. 27
• Projecting S-Video Images................................................. 28
• Projecting Component Video Images ............................... 28
• Projecting RGB Video Images........................................... 29
• If the RGB Output Port is a Mini D-Sub 15-pin Port ................................... 29
• If the RGB Output Ports are the 3BNC Ports............................................... 30
Playing Sound from the Video Equipment........ 31
Playing Sound from External Speakers ............ 32
Connecting to a Digital Camera......................... 33
• Connecting to a Digital Camera Using a USB Cable ...... 33
• Removing the USB Cable from the Projector.................. 33

6
EMP-7850 User’s Guide
Part Names and Functions
The illustration below shows the projector with a standard lens fitted.
Front/Top/Side
•Front adjustable foot p.44
Extend and retract to adjust the projection
angle when the projector is placed on a surface
such as a shelf.
•Air filter (Air intake vent)
p.119, p.125
Prevents dust and other foreign particles from being
drawn into the projector. Clean the air filters
periodically.
•Handle
Use this handle when lifting and transporting the
projector.
•(Operation) indicator p.97
Flashes or lights in different colours to indicate the
operating status of the projector.
•(Lamp) indicator p.97
Flashes or lights in different colours to indicate
problems with the projection lamp.
•(Temperature) indicator p.97
Flashes or lights in different colours to indicate
problems with the internal temperature of the
projector.
•Foot adjust lever p.44
Pull out the foot adjust lever to extend and
retract the front foot.
•Control panel p.9
•Remote control light-receiving area
p.12
Receives signals from the remote control.
•Air exhaust vent
Do not touch during or
immediately after
projection, as it can
become hot.
•Lens cover
Attach when not using the projector in order to
prevent the lens from becoming dirty or damaged.
•Zoom ring p.42
Adjusts the image size.
•Focus ring p.42
Adjusts the image focus.

7
Part Names and Functions
EMP-7850 User’s Guide
Base Rear
•Suspension bracket fixing points
(4 points) p.14, p.129
Connect an optional ceiling mount here when
suspending the projector from the ceiling.
•Air filter
p.119, p.125
Prevent dust and other
foreign particles from
being drawn into the
projector. Clean the air
filters periodically.
•Lamp cover p.121
Open this cover when
replacing the lamp inside the
projector.
•Air intake vent
p.119
Clean the air filters
periodically.
•Air intake vents
p.119
Clean the air filters
periodically.
•Remote control light-
receiving area p.12
Receives signals from the remote
control.
•Power inlet p.35
Connect the power cable here.
•Input/output ports p.10
•Speaker
•Security lock ( ) p.131
•Rear adjustable foot
•Rear adjustable foot
•Air intake vents
p.119
Clean the air filters
periodically.
•Card slot
p.16

8
EMP-7850 User’s Guide
Remote Control
If you position the over the button icon or button name, a description of that button will appear.
•Remote control light-emitting area p.13
•Indicator
•[Page] buttons p.24
•[E-Zoom] buttons p.63
•[Power] button p.36, p.40
•[R/C] switch p.12
•[ ] button p.25, p.92, p.95
•[Enter( )] button p.25, p.92, p.95
•[Menu] button p.92
•[Effect] button p.66•[ ] (illumination) button
•[Volume] buttons p.57
•[ESC( )] button p.25, p.93, p.95
•[Help] button p.95
•Numeric buttons p.59, p.74
•[ID] button p.74
•[Num] button p.59 •[Remote] port p.13
•[Preview] button p.38
•[Preset] button p.68 •[Auto] button p.53
•[Wall Shot] button p.51
•[Source] buttons p.37
•[PinP] button p.64
•[A/V Mute] button p.62
•[Resize] button p.70
•[Freeze] button p.63
•[Color Mode] button p.56

9
Part Names and Functions
EMP-7850 User’s Guide
Control Panel
Buttons with no description are the same as the remote control buttons. Refer to the remote control descriptions for details.
•[Auto/Enter] button p.53, p.92, p.95
Works the same as the [Auto] button on the remote control.
When pressed while a configuration menu or help menu is being displayed, it works the same as the [Enter] button on the remote control.
•[ ] and [ ] buttons p.55, p.92, p.95
Use these buttons for vertical keystone correction and correction using Quick Corner.
If you press one of these buttons while holding down the [Shift] button, you can adjust the sync of computer images.
•[ ] and [ ] buttons p.54, p.93, p.95
Use these buttons for horizontal keystone correction and correction using Quick Corner.
If you press one of these buttons while holding down the [Shift] button, you can adjust the tracking of computer images.
When pressed while a configuration menu or help menu is being displayed, these buttons function as [ ] and [ ] (left and right) buttons for selecting items in the menu.
•[Menu] button p.92
•[Shift] button p.54, p.55, p.72
This button has no function by itself, but is
used when adjusting the sync and tracking
and when using the resize function.
•[Resize] button p.70
•[Volume] button p.57
•[A/V Mute] button p.62
•[ESC] button p.93, p.95
•[Power] button p.36, p.40
•[Wall Shot] button p.51
•[Source] buttons p.37
[Computer/DVI] button:
Switches the input source between the
[Computer] port, [DVI] port and
[EasyMP] in that order each time the
button is pressed.
[Video/BNC] button:
Switches the input source between the
[S-Video] port, [Video] port and the
[BNC] ports in that order each time the
button is pressed.
•[Help] button p.95

10
Part Names and Functions
EMP-7850 User’s Guide
Input/Output Ports
•[USB TypeB] port p.24, p.134
When the projector is connected to a computer
with a computer cable, use this port to connect a
USB cable to the computer to use the wireless
mouse function.
•[Video] port p.27
Inputs composite video signals
from a video source.
•[Audio] ports
(for [Video] port) p.31
Input audio signals from the source
that is connected to the [Video] port.
•[Audio Out] port p.32
Outputs the audio signals from the
selected video source to external speakers.
•[Remote] port
p.129
Connect the optional remote
control cable set to input signals
from the remote control.
•[Monitor Out] port p.26
Outputs analogue-RGB signals from a
computer connected to the projector by a
computer cable, to an external monitor. It is
not compatible with digital-RGB signals
from computers, video images and EasyMP
images.
•[Computer] port
p.19, p.23, p.29
Inputs analogue-RGB signals from a
computer and RGB-video signals from
video equipment.
•[DVI] port p.22, p.23
Inputs digital RGB computer video signals.
•[Audio] port (for [Computer],
[DVI] port) p.31
Inputs audio signals from the equipment
connected to the [Computer] port or the
[DVI] port.
•[BNC] ports p.22, p.23, p.28
Inputs analogue-RGB signals from a
computer and RGB-video signals and
component video signals from video
equipment.
•[Audio] ports (for [BNC] port)
p.31
Input audio signals from the source that is
connected to the [BNC] ports.
•[Control (RS-232C)] port p.134
Connects the projector to a computer using
an RS-232C cable. This port is for control
use and should not be used by the customer.
•[S-Video] port p.28
Inputs S-Video signals from a video
source.
•[Audio] ports (for [S-Video] port)
p.31
Input audio signals from the source that is
connected to the [S-Video] port.
•[USB TypeA] port p.33
Connects a digital camera to the projector
when projecting digital camera image
files with EasyMP.
•Card Slot p.16
Insert a wireless LAN card, wired LAN
card, or memory card into the slot when
using EasyMP.
•Access Lamp
EasyMP Setup Guide,
EasyMP Operation Guide
The access status of a memory card inserted
in the PC card slot is indicated by coloured
lights that may be on or off.
•Eject button p.16
Press this button to eject a PC card when it
has been inserted into the card slot.

11
EMP-7850 User’s Guide
Before Using the Remote Control
Inserting the Batteries
The batteries are not already inserted into the remote control at the time the
projector is purchased. You will need to insert the batteries that are
provided with the projector before the remote control can be used.
PROCEDURE
Remove the battery cover.
While pushing down on the rib of the battery cover, slide the
battery cover in the direction of the arrow.
Insert the batteries.
Check the positions of the (+) and (–) marks inside the battery
holder to ensure that the batteries are inserted the correct way.
Replace the battery cover.
Slide the battery cover in until the tab clicks into place.
CAUTION
Be sure to read the Safety Instructions/World-Wide Warranty Terms
before handling the batteries.
1
Rib
2
3
TIP
If delays in the responsiveness of the remote control occur or if it does
not operate after it has been used for some time, it probably means
that the batteries are becoming flat. If this happens, replace the
batteries with two new AA alkali batteries.

12
Before Using the Remote Control
EMP-7850 User’s Guide
Using the Remote Control and Remote Operating
Range
The remote control is used in the following way.
PROCEDURE
Set the [R/C] switch of the remote control to "ON".
Point the remote control light-emitting area towards
one of the remote control light-receiving areas on the
projector and operate the remote control buttons.
Using the Remote Control
1
2
Remote control
light-receiving
area (front)
Remote control
light-receiving
area (rear)
Remote control
light-emitting area
TIP
• Do not allow sunlight or light from fluorescent lamps to shine
directly onto the projector's remote control light-receiving areas,
otherwise it may interfere with the reception of signals from the
remote control.
• When not using the remote control, set the [R/C] switch on the
remote control to "OFF". If you leave the [R/C] switch at "ON", it
will consume battery power.
• If a button on the remote control is pressed down for more than 1
minute while the [R/C] switch is at "ON", the signal for that button
operation will stop being transmitted (the remote control will change
to sleep mode). The purpose of this is to prevent the batteries from
being consumed due to something being placed on top of the remote
control.
When the button is released, normal remote control operation will
resume.

13
Before Using the Remote Control
EMP-7850 User’s Guide
Use the remote control within the ranges indicated below. If the distance or
angle between the remote control and the remote control light-receiving
area is outside the normal operating range, the remote control may not
work.
Remote Operating Range
Operating distance Operating angle
Approx. 10 m (30 ft.) Approx. ±30° horizontally
Approx. ±15° vertically
Remote control
light-receiving areas
Operating angle (horizontal)
Approx. 30° Approx. 30°
Remote control
light-emitting area
Approx. 30° Approx. 30°
Operating
distance approx.
10 m (30 ft.)
O
perat
i
ng ang
l
e
(
vert
i
ca
l)
Operating distance
approx. 10 m (30 ft.)
Approx. 15°
Approx. 15°
Approx. 15°
Approx. 15°
Operating distance
approx. 10 m (30 ft.)
When suspended from the ceiling
Operating distance
approx. 10 m (30 ft.)
Operating distance
approx. 10 m (30 ft.)
Approx. 15°
Approx. 15°
TIP
If you would like to ensure that remote control operations work
properly from a distance, use the optional remote control cable set to
connect the [Remote] port of the remote control to the projector's
[Remote] port.
See "Appendices: Optional Accessories" p.129

14
EMP-7850 User’s Guide
Installation
Setting Up the Projector
The projector supports the following four different projection methods,
allowing you to choose the best method for displaying your images.
* A special method of installation is required for suspending the projector
from the ceiling. Please contact your supplier if you would like to use
this installation method. The optional ceiling mount is required when
installing the projector on the ceiling.
p.129
CAUTION
Before setting up the projector, be sure to first read the separate
Safety Instructions/World-Wide Warranty Terms.
• Front projection
• Rear projection using a translucent screen
• Front/ceiling projection
• Rear/ceiling projection using a translucent screen
TIP
When using rear/ceiling projection using a translucent screen, set the
"Ceiling" and "Rear Proj." commands in the "Advanced1" menu to
match the installation method. p.87

15
Installation
EMP-7850 User’s Guide
Screen Size and Projection Distance
The distance from the lens to the screen determines the actual image size.
The recommended distance and projection distance values given below are
for when the projector is fitted with a standard lens. If the projector has
been fitted with an optional lens, refer to the documentation provided with
the lens.
While referring to the following table, position the projector so that the
images are projected onto the screen at the optimum size. The values
should be used as a guide for setting up the projector. The actual values
will vary depending on projection conditions and the zoom setting.
* When installing against a wall, leave a space of 20 cm (7.9 in.) or more
between the projector and the wall.
Recommended distance 77–1113 cm (2.5–36.5 ft.)
4:3 screen size (cm (in.)) Projection distance (cm (ft.))
30" (61 × 46 (24.0 × 18.1)) 77−107 (2.5–3.5)
40" (81 × 61 (31.9 × 24.0)) 105−144 (3.5–4.7)
60" (120 × 90 (47.2 × 35.4) 161−219 (5.3–7.2)
80" (160 × 120 (63.0 × 47.2)) 216−293 (7.1–9.6)
100" (200 × 150 (78.7 × 59.1)) 272−368 (8.9–12.1)
200" (410 × 300 (161.4 × 118.1)) 550−740 (18.0–24.3)
300" (610 × 460 (240.2 × 181.1)) 827−1113 (27.1–36.5)
Screen
90º Centre of lens
*
Projection distance
TIP
The standard lens allows a zoom ratio of up to about 1.35. The image
size at the maximum zoom setting is about 1.35 times bigger than the
image size at the minimum zoom setting.
• 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

16
EMP-7850 User’s Guide
Inserting and Removing Cards
Inserting and removing PC cards will be explained using the included wireless
LAN card provided as an example. When using other cards, or inserting or
removing a card in a PC card slot on a computer, refer to the documentation
included with the card.
Installation
PROCEDURE
Hold the wireless LAN card with the face outward and insert
it into the projector card slot.
Insert firmly into the slot until it is secure. Once the wireless LAN card has
been fully inserted in the card slot, the rear edge of the card will protrude from
the slot.
TIP
The following PC cards can be inserted in the card slot on this
projector.
• Wireless LAN card (only compatible with the included accessory)
• Memory card
• Wired LAN card
For details on compatible wired LAN cards "Compatible PC
Cards" in the EasyMP Setup Guide
CAUTION
• Insert the PC card facing the right way. Installing the device back to
front or upside down may cause failure or damage.
• Always remove the card before transporting the projector.
Rear

17
Inserting and Removing Cards
EMP-7850 User’s Guide
Removal PROCEDURE
Press the eject button above the card slot.
The eject button will pop out.
Press the eject button again.
Enough of the wireless LAN card will be ejected so that you
can grasp the edge of the card and pull it straight out of the slot.
CAUTION
• Do not remove a PC card when the access lamp is lit green, when
connected to a network or when projecting a scenario. Improperly
removing a PC card may result in damage to the card or data
destruction on a memory card.
• The PC card gets hot during and after projector use. Please handle
the card carefully to avoid personal injury or burns.
• When you wish to remove a memory card whilst using CardPlayer,
be sure to close CardPlayer before removal. CardPlayer may
malfunction if a memory card is removed without closing
CardPlayer first. "Closing CardPlayer" in the EasyMP
Operation Guide
1
Eject button
Access lamp
2
CAUTION
Be sure to press the eject button back in to prevent it from being
broken or damaged.

18
EMP-7850 User’s Guide
Connecting to a Computer
Eligible Computers
The method for connecting the projector to a computer using a cable is
explained here. Refer to the EasyMP Setup Guide when connecting to a
computer via a network.
The projector cannot be connected to some types of computer, or
projection of images may not be possible even if actual connection is
possible. Make sure that the computer you intend to use satisfies the
conditions given below.
• Condition 1: The computer must have an image signal output port.
Check that the computer has a port such as an "RGB port", "monitor port"
or "CRT port" which can output image signals.
If the computer has a built-in monitor, or if using a laptop computer, it
may not be possible to connect the computer to the projector, or
alternatively you may need to purchase a separate external output port.
Refer to the documentation for your computer under a heading such as
"Connecting an external monitor" or similar for further details.
• Condition 2: The display resolution and frequency of the computer
must be listed in the "List of Supported Monitor Displays". p.136
Some computers allow you to change the output resolution, so if
necessary, change the resolution to one that matches a setting in the "List
of Supported Monitor Displays". Refer to the documentation provided
with the computer.
CAUTION
When connecting the projector to a computer, be sure to check the
following.
• Turn the power off for both the projector and the computer before
connecting them. If the power for either device is on at the time of
connection, damage may result.
• Check the shapes of the cable connectors and the device ports before
making the connections. If you try to force a connector to fit a device
port with a different shape or number of terminals, a malfunction or
damage to the connector or port may result.
• Do not bind the power cable and the connecting cable together. If
the power cable and the connecting cable are bound together, image
interference or errors in operation may result.
TIP
• You may need to purchase a commercially-available adapter
depending on the shape of the computer's port. Refer to the
documentation provided with the computer for further details.
• If the computer and projector are too far away from each other for
the accessory computer cable to reach, use the optional VGA-HD15
PC cable. See "Appendices: Optional Accessories" p.129

19
Connecting to a Computer
EMP-7850 User’s Guide
Projecting Images from the Computer
The shape and specifications of the computer's monitor port will determine
what type of cable should be used. Check the following to see which type
of port your computer has.
Use the accessory computer cable to make the connections.
If the Monitor Port is a Mini D-Sub 15-pin Port
Computer cable
(accessory)
To monitor port
To [Computer] port (blue)
TIP
• After projection starts, change the "Computer Input" setting in the
"Setting" menu to "Analog-RGB". p.84
• If more than one external component is connected to the projector,
press the [Comp] button on the remote control after projection starts,
or repeatedly press the [Computer/DVI] button on the projector's
control panel until "Computer (Analog-RGB)" is displayed on the
projected image to select the signal to be projected. p.37