Epson Projector Emp 720 User Manual

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4Take out the lamp.
Hold the lamp by the two recesses on the 
side to lift it up and out from the projector.
5Install the new lamp.
Hold the lamp so that it faces the correct 
way to fit into the projector, and then 
insert the lamp until it clicks into place 
and tighten the two fixing screws.
6Install the lamp cover.
Insert the two cover tabs into the projector, 
and then press the other side of the lamp 
cover until it clicks into place.
Tip :
 Install the lamp securely. If the lamp cover is removed, the lamp turns off automatically 
as a safety precaution. Moreover, the lamp will not turn on if the lamp or the lamp 
cover is not installed correctly.
 Replacement lamps are provided with a spare air filter. The air filter should also be 
replaced when the lamp is replaced. (p.81)
 Dispose of used lamps properly in accordance with your local regulations. 
						

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The projector has a built-in counter which keeps track of the lamp operating 
time. When the cumulative operating time reaches a certain point, it causes the 
replacement warning message to be displayed. Therefore, the counter needs to 
be reset after the lamp has been replaced with a new one. You can do this using 
the projector menu.
Tip :
Do not reset the lamp operating time except after the lamp has been replaced, otherwise 
the lamp replacement period will not be indicated correctly.
Procedure
1Connect the power cord, turn on 
the projectors power, and then 
press the [Menu] button on the 
remote control.
The main menu will be displayed.
2Select Reset Lamp Timer from the 
About menu and then press the 
[Enter] button.
3Select Yes and then press the 
[Enter] button.
The lamp operating time will then be 
reset.
Resetting the Lamp Operating Time
MenuA/V Mute
E-ZoomFreeze
Enter
Remote Control
Frequency Video Source
V ---.--Hz Reset Lamp Timer
H ---.--kHz Lamp 1400H
SYNC Mode SYNC Polarity
------H ------
Resolution
Refresh Rate 0.0 Hz0x   0 Computer
Input Signal RGB
Execute:
:
:
: :
:
V ------:
: :
: :
Reset Lamp Timer
Execute?
YESNO
Maintenance 
						

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Procedure
1Turn off the projector power, wait 
for the cool-down
 period to end, 
and then disconnect the power 
cord.
The cool-down period lasts for 30 - 45 
seconds. The actual time will vary 
depending on the external air  
temperature.
2Put your finger into the recess in 
the air filter hook, and lift up the air 
filter to remove it.
3Install the new air filter.
First insert the tabs, and then press down 
on the opposite side until it clicks into 
place.
Tip :
Dispose of used air filters properly in accordance 
with your local regulations.
Replacing the Air Filter 
						

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Saving a Users Logo
You can record the image that is currently being projected as a users logo.
Tip :
When a users log is recorded, the previous users logo will be erased.
Procedure
1Project the image that you would like to use as a users logo, 
and then press the [Menu] button on the remote control.
2Select the Users Logo menu, and 
then press the [Enter] button.
Tip :
If keystone correction or E-Zoom have been carried 
out, they will be canceled when the Users Logo 
menu is selected.
3Select Yes in the sub-menu, and 
then press the [Enter] button.
4The image to be recorded and a 
selection marquee box will be 
displayed. Move the marquee box to 
select the part of the image to use.
Press the [ ], [ ], [ ] and [ ] buttons on 
the remote control to select the part of the 
image to use as the users logo, and then 
press the [Enter] button.
: Select: Execute
Execute
Video
Audio
Setting
Users Logo
Advanced
About
Reset All
Do you use the present image as a
Users Logo
users logo?
YESNO
: Select : Return : Execute
: Move : Return : Set 
						

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5Select Yes at the confirmation 
screen, and then press the [Enter] 
button.
6Select the zoom rate in the Zoom 
rate setting screen, and then press 
the [Enter] button.
7Select Yes at the confirmation 
screen, and then press the [Enter] 
button.
The image will then be saved. Once the 
image has been saved, the message 
Saving the users logo is completed. will 
be displayed.
Tip :
 Saving the users logo may take a few moments (about 15 seconds). Do not use the 
projector or any other sources which are connected to the projector while the users 
logo is being saved, otherwise it may result in errors in projector operation.
 Users logos can be saved at up to 480 x 360 dots in size.
 If the image resolution is not XGA
, or if a video image is being projected, the display 
size will be changed.
 Once a users logo has been saved, the logo setting cannot be returned to the factory 
default.
Do you use this image?
YESNO Users Logo
: Select : Return : Execute
Set the zoom rate.
Zoom rate:100%200%300%
Users Logo
: Select : Return : Execute
Do you save the users logo?
If you save it, the previous userslogo will be over written.
YESNO Users Logo
: Select : Return : Execute 
						

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Optional Accessories
The following optional accessories are available for purchase if required. This 
list of optional accessories is current as of April 2002. Details of accessories are 
subject to change without notice.
* A special method of installation is required in order to suspend the projector from the ceiling. Please 
contact the place of purchase if you would like to use this installation method.
Soft carrying case ELPKS16Use this case if you need to carry the projector by 
hand.
Spare lamp  ELPLP18Use as a replacement for spent lamps.
Por table screen (50-inch) ELPSC06 A compact screen which can be carried easily.
60-inch screen  ELPSC07
80-inch screen  ELPSC08
Computer cable  ELPKC02 
(1.8 m (6 ft.) - for mini D-Sub 15-pin/ mini 
D-Sub 15-pin)
Use to connect the projector to a computer.
Computer cable  ELPKC09
(3 m (9.8 ft.) - for mini D-Sub 15-pin/ mini D-
Sub 15-pin)
Computer cable  ELPKC10
(20 m (65.6 ft.) - for mini D-Sub 15-pin/ mini 
D-Sub 15-pin)
Use this extension cable if the accessory 
computer cable is too short.
Computer cable ELPKC11
(1.8 m (6 ft.) - for mini D-Sub 15-pin/
5BNC)
Use in order to connect the projector to a 
computer with a 5BNC port
Component video cable  ELPKC19
(3 m (9.8 ft.) - for mini D-Sub 15-pin/
RCA x 3)
Use to connect a component video source.
Ceiling mount *
ELPMB10Use when installing the projector to a ceiling.
Ceiling plate * ELPFC03
Pipe 370 (370 mm (14.57 inches/ silver)*
ELPFP04
Pipe 570 (570 mm (22.44 inches)/ silver)*
ELPFP05
Pipe 770 (770 mm (30.31 inches)/ silver)*
ELPFP06
Use when installing the projector to a high ceiling 
or a ceiling with veneer panels.
Image presentation camera ELPDC02
ELPDC03
ELPDC04
Use when projecting books, OHP films and 
slides. 
						

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Glossary
Following is an explanation of some of the terms used in this guide which may 
be unfamiliar or which were not explained in the manual itself. Further 
information can be obtained by referring to other commercially-available 
publications.
5BNCA port used to input analog video signals.
A/V MuteThe momentary canceling of audio and video output. This projectors remote control 
has an [A/V Mute] button which you can press to momentarily stop the projection of 
pictures and sound. The picture and sound can be restored by pressing the [A/V Mute] 
button.
Aspect ratioThe ratio between an images length and its height. HDTV images have an aspect ratio 
of 16:9 and appear elongated. The aspect ratio for standard images is 4:3.
Color 
temperatureThe temperature of an object which is emitting light. If the color temperature is high, 
the colors tend to take on a bluish tinge. If the color temperature is lower, the colors 
tend to take on a reddish tinge.
Component 
videoVideo signals which have the video brightness signals and color signals separated, in 
order to provide better image quality. 
In high-definition TV (HDTV), it refers to images which consist of three independent 
signals: Y (luminance signal), and Pb and Pr (color difference signals).
Composite 
videoVideo signals which have the video brightness signals and color signals mixed together. 
The type of signals commonly used by household video equipment (NTSC format).
The signals consist of the carrier signal Y (luminance signal) and the chroma (color) 
signal which are contained in the color bar signal.
ContrastThe relative brightness of the light and dark areas of an image can be increased or 
decreased in order to make text and graphics stand out more clearly, or to make them 
appear softer. Adjusting this particular property of an image is called contrast 
adjustment.
Cool-downThe cooling process for the projectors lamp unit continues even after the [Power] 
button on the projectors control panel or the remote control has been pressed to turn off 
the lamp. After the lamp turns off, the cooling fan continues operating, but all button 
operations are disabled. The length of time that this is happening is called the cool-
down period. The cool-down period lasts for about 30 - 45 seconds. The actual time 
will vary depending on the external air temperature.
Dolby DigitalA sound format developed by Dolby Laboratories. Normal stereo is a 2-channel format 
which uses two speakers. Dolby Digital is a 6-channel (5.1-channel) system which 
adds to this a center speaker two rear speakers and a sub-woofer.
EMP Link21LA utility software program that allows the projector to be connected to a computer so 
that the computer can be used to control the projector. For details on acquiring the 
software and for instructions on using the software and compatible projector models, 
please contact one of the service offices provided in the catalog.
FreezeThe momentary pausing of image playback only. When the [Freeze] button on the 
remote control is pressed, the image playback only can be paused. When the [Freeze] 
button is pressed again, playback resumes.
HDTVAn abbreviation for High-Definition Television. It refers to high-definition systems 
which satisfy the following conditions.
Vertical resolution of 720p or 1125i or greater (p = progressive scanning
, i = 
interlaced scanning)
Screen aspect ratio
 of 16:9
Dolby Digital
 audio reception and playback (or output) 
						

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Interlaced 
scanningA method of image scanning whereby the image data is divided into fine horizontal 
lines which are displayed in sequence starting from left to right and then from the top to 
the bottom of the screen. The even-numbered lines and odd-numbered lines are 
displayed alternately.
Progressive 
scanningA method of image scanning whereby the image data from a single image is scanned 
sequentially from top to bottom to create a single image.
Refresh rateThe light-emitting element of a display maintains the same luminosity and color for an 
extremely short time. Because of this, the image must be scanned many times per 
second in order to refresh the light-emitting element. The number of refresh operations 
per second is called the refresh rate, and is expressed in hertz (Hz).
Resize 
displayThis function is use to project computer images that have a resolution or more than or 
less than the projectors panel resolution to be projected so that they fill the whole of 
the projection area.
Security lockA device consisting of a projector case with a hole in it that a commercially-available 
theft-prevention cable can be passed through in order to secure the device to a table or 
pillar. This projector is compatible with the Microsaver Security System manufactured 
by Kensington.
Source 
promptThe screen display showing the type of signal being input.
sRGBAn international standard for color intervals that was formulated so that colors which 
are reproduced by video equipment can be handled easily by computer operating 
systems (OS) and the Internet.
SVGAA type of video signal with a resolution of 800 (horizontal) x 600 (vertical) dots which 
is used by IBM PC/AT-compatible computers (DOS/V computers).
S-VideoA video signal which has the luminance component and color component separated in 
order to provide better image quality. 
It refers to images which consist of two independent signals: Y (luminance signal), and 
C (color signal).
SXGAA type of video signal with a resolution of 1,280 (horizontal) x 1,024 (vertical) dots 
which is used by IBM PC/AT-compatible computers (DOS/V computers).
Sync.
(Synchroni-
zation)The signals output from computers have a specific frequency. If the projector frequency 
does not match this frequency, the resulting images will not be of a good quality. The 
process of matching the phases of these signals (the relative position of the crests and 
troughs in the signal) is called synchronization. If the signals are not synchronized, 
problems such as flickering, blurriness and horizontal interference can occur.
TrackingThe signals output from computers have a specific frequency. If the projector frequency 
does not match this frequency, the resulting images will not be of a good quality. The 
process of matching the frequency of these signals (the number of crests in the signal) 
is called tracking. If tracking is not carried out correctly, wide vertical stripes will 
appear in the projected images.
USBAn abbreviation for Universal Serial Bus. USB is an interface for connecting personal 
computers to peripheral devices which only support relatively low data transmission 
speeds.
UXGAA type of video signal with a resolution of 1,600 (horizontal) x 1,200 (vertical) dots 
which is used by IBM PC/AT-compatible computers (DOS/V computers).
VGAA type of video signal with a resolution of 640 (horizontal) x 480 (vertical) dots which 
is used by IBM PC/AT-compatible computers (DOS/V computers).
XGAA type of video signal with a resolution of 1,024 (horizontal) x 768 (vertical) dots 
which is used by IBM PC/AT-compatible computers (DOS/V computers).
Glossary 
						

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YCbCrThe carrier signal which is contained in the color bar signal used in modern TV 
transmissions (NTSC format). The name comes from the Y (luminance) signal and the 
CbCr (chroma (color)) signals.
YPbPrThe carrier signal which is contained in the color bar signal used in high-definition TV 
(HDTV) transmissions. The name comes from the Y (luminance) signal and the PbPr 
(color difference) signals. 
						

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List of ESC/VP21 Commands
Command List
When a power ON command is sent to the projector, the power for the projector 
turns on. When the projector is in a command ready state, it returns the 3Ah (:) 
code. Furthermore, when command processing is complete, the projector also 
returns a : code.
The : code status can be used to determine whether the projector is ready or 
busy. If command processing terminates with an error, an error message is 
output and then the : code is sent.
Item Command
Power ON/OFFON
PWR ON
OFFPWR OFF
Signal selectionComputer/ Component 
Video (RGB)
SOURCE 11
Computer/ Component 
Video (YCbCr)SOURCE 14
Computer/ Component 
Video (YPbPr)SOURCE 15
Vi d e oSOURCE 41
S-VideoSOURCE 42
A/V Mute ON/ OFFONMUTE ON
OFFMUTE OFF
A/V Mute SelectionBlack
MSEL 00
BlueMSEL 01
Users LogoMSEL 02