Epson Powerlite S4 Users Guide

							11Part Names and Functions 
Remote Control
[A/V Mute] button (see page 19) [E-Zoom] button ( ) ( ) (see page 21
)
[Enter] and [Esc] button (see page 22)
[Auto] button (see p.12)[Menu] button (see page 31
) [Power] button (see Quick Setup sheet)
[Color Mode] button (see page 14
) [ ] button (see page 22
)
[Freeze] button (see page 20) [Page down] [Page up] buttons (see page 22
)
[Computer] button (see page 18
)
[S-Video] button (see page 18
)
[Video] button (see page 18
)
[Resize] button (see page 20
) [Pointer] button (see p.21)
[Help] button (see page 45
)
[Volume] buttons (see page 17
) [Num] button and numeric buttons (see page 24
)
[Search] button (see page 17) 
						

							12Adjusting the Image Quality 
Adjusting and Changing the Image
Adjusting the Image Quality
Adjusting Computer Images and RGB Video Images
Automatic Setup
Automatic setup detects analog RGB signals coming from a connected 
computer, and automatically adjusts these signals so that the optimum 
images can be obtained.
Automatic setup involves adjustment of Tracking, Position, and Sync 
(synchronization).
If Auto Setup in the Signal menu is set to Off, automatic setup is not 
carried out. In this case, press the [Auto] button on the remote control or the 
[Enter] button on the projectors control panel to make the adjustment while 
computer or RGB video images are being projected.
Adjusting the Tracking
If vertical stripes appear in the projected computer 
or RGB video images, and this cannot be fixed using 
automatic setup, you will need to adjust the Tracking 
manually using the following procedure.
1Select Signal from the configuration 
menu, and then select Tracking.
Check the buttons you can use and the operations they perform in the 
guide at the bottom of the screen.
Using the remote control
Using the control panel
p
• If you try to make the adjustment while other functions such as E-zoom or 
Freeze are in use, these functions are canceled and then the adjustment is 
made.
• Sometimes the signals may not be adjusted correctly depending on the type 
of computer or RGB video signals being input. In such cases, use the 
configuration menu commands to adjust the tracking and sync settings 
manually. See page 33.
Using the remote control
Using the control panel 
						

							13Adjusting the Image Quality 
2Adjust the tracking until the vertical stripes disappear from the 
image. 
The tracking value increases or decreases each time a button is 
pressed.
3Press the [Menu] button to exit the configuration menu.
Adjusting the Sync
If flickering, fuzziness or interference appear in 
computer or RGB video images, and this cannot be 
fixed using automatic setup, you will need to adjust 
the Sync (synchronization) manually using the 
following procedure.
1Select Signal from the configuration 
menu, and then select Sync..
Check the buttons you can use and the operations they perform in the 
guide at the bottom of the screen.
2Adjust the synchronization until the horizontal noise disappears 
from the image.
p
The image will flash when continuous tracking adjustment is carried out, 
but this is normal.
Using the remote control
Using the control panel
Using the remote control
Using the control panel 
						

							14Adjusting the Image Quality 
The sync value increases or decreases each time a button is pressed.
3Press the [Menu] button to exit the configuration menu.
Selecting the Projection Quality (Color Mode)
The following seven preset color modes are 
available for use depending on the characteristics of 
the images that are being projected. You can easily 
obtain the optimum image quality simply by 
selecting the color mode that corresponds to the 
projected images. The brightness of the images will 
vary depending on which color mode is selected.
p
• If you adjust the sync without adjusting the tracking first, it will not be 
possible to get the best adjustment results. Incorrect tracking adjustment 
may not be noticeable with some types of images. However, images with 
lots of lines and shading will tend to show incorrect tracking adjustments 
more clearly, so check the tracking adjustment first.
• Flickering and fuzziness may also occur when the brightness, contrast, 
sharpness, zoom, and keystone correction settings are adjusted.
Using the remote control
Using the control panel
ModeApplication
Photo(When computer and RGB video images are being input)
The images are vivid and contrast is increased. Ideal for projecting 
still pictures, such as photos, in a bright room.
Sports(When component video, S-video, or composite video images are 
being input)
The images are vivid and brought to life. Ideal for watching TV 
programs and so on in a bright room.
PresentationIdeal for giving presentations in a bright room
TheatreGives images a natural tone. Ideal for watching films in a dark 
room.
GameExcels at emphasizing dark gradations. Ideal for playing video 
games in a bright room.
sRGBIdeal for images that conform to the sRGB color standard
BlackboardEven if you are projecting onto a blackboard (green board), this 
setting gives your images a natural tint, just like when projecting 
onto a screen 
						

							15Adjusting the Image Quality 
Each time you press the button, the color modes change in the following 
order.
The current setting appears in the top-right corner of the screen each time the 
color mode is changed. While the color mode name is displayed on the 
screen, it does not change to the next color mode setting unless you press the 
button.
p
The color mode can also be set using the Color Mode command in the 
Image menu. See page 32
. 
						

							16Adjusting the Projection Position (Image Shift) 
Adjusting the Projection Position (Image Shift)
When you cannot setup this projector directly in front of the screen, the 
projection position can be finely tuned without moving this projector. 
1Using the button on the projector, perform zoom adjustment or 
keystone correction. See the Quick Setup sheet.
The Image Shift adjustment screen is displayed after you finish 
making adjustments.
2Adjust projection position.3Press the [Esc] button to close the adjustment screen.
The screen closes automatically if no operations are performed for 
about 10 seconds.
p
• The projection position cannot be adjusted when zoom is set to 
maximum wide.
• Even if you turn the power supply off, the Image Shift settings you 
make are kept. When either the projector position or the angle of the 
projector is changed, you can readjust or perform the following 
operations.
• You can also make adjustments from the configuration menu. See page 
33.
Using the Remote Control  Using the Control Panel
Press and hold down the 
[Wide] and [Tele] buttons 
for more than one second. Control Panel 
						

							17Adjusting the Volume 
Adjusting the Volume
The volume of the projectors built-in speaker can be adjusted as follows.
When the button is pressed to the [ ] side, the volume increases, and when 
it is pressed to the [ ] side, the volume decreases. 
The volume gauge appears on the screen when the volume is being adjusted. 
Selecting the Image Source
The image source is the projector port to which your video equipment is 
connected. You can select the image source automatically, using Source 
Search as described below. Or you can select a source yourself as described 
on page 18
.
Automatically Detecting the Source (Source Search)
Source Search automatically detects the picture signal from connected 
equipment and projects the image. 
1Turn on your computer or video equipment. If you are viewing a 
tape or DVD, start playback.
2Press the Source Search button.
p
• If the value displayed in the gauge on the screen stops changing when the 
volume is being adjusted, it indicates that the limit for volume adjustment 
has been reached.
• The volume can also be adjusted using the configuration menu. See page 
34.
Remote control
Using the Remote Control Using the Control Panel 
						

							18Selecting the Image Source 
3The projector searches for an active source and displays the 
image. 
Unused sources are skipped, as shown below. When two or more 
pieces of equipment are connected, press the [Source Search] button 
repeatedly to select the desired source. Selecting the Source from the Remote Control
You can use the remote control to select a specific image source.
p
You see this screen if no picture signal is available. You can use the screen 
to choose the input source. 
Computer S-Video Video
SkipChanges to the image 
from the Computer port.
Changes to the image 
from the S-Video port.Changes to the image 
from the Video port.
Remote Control  
						

							19Functions for Enhancing Projection 
Additional Projector Functions
This chapter explains functions used when giving presentations and for using 
the projector’s security functions.
Functions for Enhancing Projection
Muting the Image and Sound (A/V Mute)
For example, this can be used if you want to pause the projection for a 
moment and focus the audience’s attention on what you are saying. Or if you 
are making a computer presentation and you do not want to show details, 
such as selecting different files.You can temporarily turn off the image and sound in two ways:
◗When you close the lens cover, projection and sound are turned off. Open 
the lens cover to restore projection and sound.
◗When you press the A/V Mute button on the remote control, projection and 
sound are turned off. If you saved a user’s logo (see page 28
), you can set 
it to display when you press the A/V Mute button (see page 35
). Press the 
A/V Mute button again to restore projection and sound.
Using the remote control
Pressing the [A/V Mute] button 
stops projection and sound. Closing the lens cover stops 
projection and sound. 
Using the projector
p
• If you’re watching a moving picture, the video source continues to play 
while the screen is dark. You should pause the video if you wish to resume 
playback where you stopped it.
• The screen display in A/V mute can be chosen from black, blue, or a logo 
by using Extended -Display - A/V Mute in the configuration menu. 
						

							20Functions for Enhancing Projection 
Freezing the Image
The source image continues to project even when the screen is frozen. You 
can still perform operations such as changing files, without projecting any 
images.
You can turn this function on or off by pressing the [Freeze] button.
Changing the Aspect Ratio
This function changes the aspect ratio of images from 4:3 to 16:9 when 
component video, S-video, or composite video images are being projected. 
Images which have been recorded in digital video or onto DVDs can be 
viewed in 16:9 wide-screen format. 
The display is changed whenever you press the button.
p
• Sound does not stop.
• Even though the image on the screen is frozen, the image source 
continues to project, and so it is not possible to resume projection from 
the point where it was paused.
• Pressing the [Freeze] button also clears configuration menu displays 
and help messages.
• The freeze function still works while the E-Zoom function is being used. 
Remote control
p
You can also make this setting using the Resize command in the 
Signal menu.
When images in Squeeze 
Mode are projected at 16:9 When images in Squeeze 
Mode are projected at 4:3
Remote control