Epson Powerlite 7550c Users Guide

2    Using the Projector             60
You can use the remote control up to 32.8 feet (10 meters) from the 
projector. (This distance may be shorter if the remote control 
batteries are low.) You must also hold the remote control so that it is 
within 
±30
° left or right of, and  
± 15
° higher or lower than, the 
infrared receiver.
Note: If the projector doesn’t respond to remote commands, the 
room may be too light or a strong light source (such as direct 
sunlight) may be hitting the infrared...

Controlling the Projector
61
Using the Effects buttons
The Effects buttons on the remote control allow you to enhance your 
presentation with special effects (for example, you can use 
highlighting or a box or line to emphasize different parts of the Top 
multi-purpose 
buttonActs as a right mouse click. Press to open submenus.
Bottom 
multi-purpose 
buttonActs as a left mouse click. Press to open submenus.
AV/Mute Turns the projector’s audio and video output off and back on 
again—clears all special...

2    Using the Projector             62
screen). Each button is assigned a function in the factory. You can 
use the Effect menu to modify the appearance and behavior of these 
functions. (See “Modifying the Special Effects” on page 81.)
If you have the optional ELP Link III software, you can assign 
different functions to each button, or you can program buttons with 
your own functions. (See “Assigning Functions to the Effects 
Buttons” on page 102 for details.)
To cancel a function, press the bottom...

Controlling the Projector
63
3 Line Draws a straight line on the screen: 
Press the Effects button, then press the bottom 
multi-purpose button once to define the line  position. 
To draw another line, move the pointer away from the 
line you just created and press the bottom 
multi-purpose button again to define the new line 
position.
4 Marker Lets you highlight an area of the screen with a colored 
bar:
Press the Effects button, then press the bottom 
multi-purpose button once to define the start...

2    Using the Projector             64
Using the Control Panel
Although you must use the remote control to access custom 
features, such as functions assigned to the Effects buttons, you can 
use the control panel to perform most standard operations, such as 
selecting menu options, adjusting volume, or resizing the image on 
the screen. 
Enter button 

Controlling the Projector
65
The following table summarizes the functions on the control panel.  
 Button Function
Power Turns the projector lamp on or off.
Source Switches the input source between computer and video. 
Menu Displays or hides the active menu.
Up, down 
arrows 
(Sync+/Sync-)Synchronize the computer’s graphic signal to remove flicker. Also 
let you navigate menus.
Left, right
arrows
(tracking-/
tracking+)Correct vertical fuzzy lines by matching the projector’s internal 
clock to various...

2    Using the Projector             66
Projector Status Lights
The lights on top of the projector tell you about its operating status.
Caution: A red light warns you if a serious problem occurs. See 
Chapter 6, “Troubleshooting,” for what to do if a warning light 
comes on.
power light
projector lamp light
temperature light 

Projector Status Lights
67
Power Light 
Light status Meaning
Steady orange  The projector is in sleep mode. (The projector is plugged in, but 
not projecting.)
Steady green  Power and projector lamp are on.
Flashing green  The projector is warming up. Allow about 30 seconds.
Flashing orange The projector is cooling down.
Off There is an internal projector problem, or the power to the 
projector has been cut off. 

2    Using the Projector             68
Projector Lamp Light
Temperature Light
Light status Meaning
Orange and red 
flashing alternatelyThe lamp needs to be replaced. See “Replacing the Lamp” on 
page 134 for instructions.
Steady red Projector lamp has burned out. Replace it to project images. See 
“Replacing the Lamp” on page 134 for instructions.
Flashing red There’s a problem with the projector lamp, lamp power supply, or 
lamp fuse, or a circuit malfunctioned in the projector.
Off The lamp is...

67
3Adjusting Projector Settings
Y
ou can use the buttons on the remote control or the projector’s 
control panel to access seven projector menus, which let you control 
the following settings:
p
The Video menu controls the look and quality of the projected 
image, whether the image source is a computer or another video 
source (for example, a VCR). 
p
The Audio menu controls audio features, such as the volume 
level, tone setting, and stereo sound.
p
The Setting menu lets you adjust basic projector...