Epson Projector Powerlite 50c User Manual

							46Maintaining and Transporting the Projector
Cleaning the Lens 
Clean the lens whenever you notice dirt or dust on the surface.

To remove dust, use a canister of compressed air to spray the lens 
surface, or lightly wipe the lens surface with a soft, dry, lint-free 
cloth. 

To remove dirt or smears, use lens-cleaning paper. If necessary, 
moisten a soft cloth with an alcohol-based cleaner and gently wipe 
the lens surface.
Cleaning the Projector Case
Before you clean the projector case, turn off the projector and unplug 
the power cord. 

To remove dirt or dust, wipe the outside with a soft, dry, lint-free 
cloth. 

To remove stubborn dirt or stains, clean the case using a soft cloth 
moistened with water and a neutral detergent. Dry it using a 
separate cloth.

Do not use alcohol, benzene, thinner, wax, or other chemicals. 
These can damage the case.
Clean here 
						

							Maintaining and Transporting the Projector47
Cleaning the Air Intake Vent
Clean the air intake vent after every 100 hours of use, or if the
 
Error light on top of the projector turns red. 
If the vent is not cleaned periodically, it can become clogged with 
dust, preventing proper ventilation. This can cause overheating and 
damage the projector. Follow these steps to clean the vent:
1. Turn off the projector, let it cool down, and unplug the power 
cord.
2. Stand the projector on its back panel with the lens pointing 
upward.
3. To clean the vent, EPSON recommends using a small vacuum 
cleaner designed for computers and other office equipment. If you 
don’t have one, use a dry, lint-free cloth. 
If the dirt is difficult to remove, replace the air intake vent. You can 
purchase the part from your dealer, or by calling EPSON at 
(800) 873-7766, or by visiting the EPSON Store at 
www.epsonstore.com (U. S. sales only). In Canada, please call 
(800) 873-7766 for dealer referral.  
						

							48Maintaining and Transporting the Projector
Replacing the Lamp 
The projection lamp typically lasts for about 1500 hours of use. It is 
time to replace the lamp when:

The projected image gets darker or starts to deteriorate.

The  Error light on top of the projector is flashing red in 
1-second intervals. 

The LAMP REPLACE message appears on the screen when the 
projector lamp comes on (after about 1500 hours of use). To 
maintain projector brightness and image quality, replace the lamp 
as soon as possible after you see the message.
To order a replacement lamp (part number 
ELPLP13), contact your 
dealer or call EPSON at (800) 873-7766 or visit the EPSON Store at 
www.epsonstore.com (U. S. sales only). In Canada, please call 
(800) 873-7766 for dealer referral.
Follow these steps to replace the lamp:
1. Turn off the projector, let it cool down, and unplug the power 
cord.
2. Allow the projector to continue cooling for at least one hour (if it 
has been on).
3. Turn the projector upside-down to access the lamp compartment.
4. To remove the lamp cover, press on the two tabs and pull out the 
cover.
note
To view the number of hours 
your lamp has been used, 
check the About menu; see 
page 38 for instructions.
warning
Let the lamp cool before 
replacing it. To avoid 
premature lamp failure, do 
not touch the glass portion of 
the lamp assembly.  
						

							Maintaining and Transporting the Projector49
5. Use a screwdriver to loosen the two lamp cover screws; you can’t 
remove the screws. Then pull out the lamp by the two notches. 
6. Position the new lamp correctly, then gently insert it into the 
projector. Press it into place and tighten the retaining screws. 
7. Insert the lamp cover as shown and press it back into place. 
8. Follow the instructions in Chapter 3 to access the projector’s 
About menu and reset the lamp counter to zero.
caution
Make sure the lamp cover is 
securely fastened; the 
Error light flashes and 
the projector lamp won’t turn 
on if the cover is open. 
						

							50Maintaining and Transporting the Projector
Transporting the Projector
The projector contains many glass and precision parts. If you need to 
transport it, please follow these packing guidelines to prevent 
damaging the projector: 

When shipping the projector for repairs, use the original 
packaging material if possible. If you do not have the original 
packaging, use equivalent materials, placing plenty of cushioning 
around the projector.

When transporting the projector as freight or checked luggage, 
first put it in a carrying case (such as an EPSON case), then pack 
it in a firm box, using cushioning around the case. 

When you’re hand-carrying the projector, be sure to use a 
carrying case (such as an EPSON case).
note
EPSON shall not be liable 
for any damage incurred 
during transportation. 
						

							5
Solving Problems51
Solving Problems
This chapter helps you diagnose and solve problems with your 
projector and provides technical support information for problems 
you can’t solve yourself. 
This chapter tells you how to:

Use the projector’s on-screen help system

Check the projector’s status using its lights

Solve image or sound problems 

Solve remote control problems
If none of the suggestions here solve the problem, see “Where To Get 
Help” on page 58.
Using the On-Screen Help 
If you have a problem while setting up or using your projector, you 
can get help by pressing the 
? Help button on top of the projector or 
the remote control.  
						

							52Solving ProblemsThe following choices are available:

Help for the image
Tells you how to solve problems with a blank screen, blurry 
images, brightness, colors, and image shape

Help for the sound
Provides help for problems with lack of audio

Language Selection
Lets you choose to display the help information and projector 
menus in any of 8 different languages.

Return
Exits the help system.
Follow these steps to get help:
1. Press the 
? Help button. You see the main help menu.
2. To select the help menu you want, press the bottom or top of the 
Select (Keystone) button on the projector, or the bottom or top 
of the 
Enter button on the remote control.
3. Press the 
Enter (Source) button on the projector or the center of 
the 
Enter button on the remote control to select your help topic. 
Depending on the topic, you may see another menu or a list of 
solutions.
4. To exit the Help system, press the 
? Help button on top of the 
projector or the remote control.
If none of the Help menu choices solve your problem, see the 
solutions in the rest of this chapter. 
						

							Solving Problems53
Checking the Projector’s Lights
If your projector isn’t working correctly, first turn it off, wait for it to 
cool, and unplug it. Then plug the power cord back in and turn on 
the projector. If this doesn’t solve the problem, check the lights on top 
of the projector. They alert you to problems with projector operations.
warning
Except as specifically 
explained in this User’s 
Guide, do not attempt to 
service this product yourself.
Power light
Error light
LightStatusDescription and action
off The projector is unplugged. Press the Power button to turn off the 
projector, check that the power cable is connected securely at both ends, 
then press the Power button again to turn on the projector. 
orange The projector is in sleep mode. You can unplug it to disconnect the power or 
press the Power button to turn on the projector lamp.
flashing 
greenThe projector is warming up. Wait for the image to appear.
green The projector is operating normally.
flashing 
orangeThe projector lamp is off and the projector is cooling down. Wait until the 
light stops flashing and then press the Power button to turn on the 
projector. (You can’t turn the projector on or unplug it when the light is 
flashing orange.)
flashing red 
at 1-second 
intervalsThe lamp cover is not closed securely or the lamp has burned out. Secure the 
lamp cover or replace the lamp; see page 48 for instructions.
red The projector is too hot. Turn it off and let it cool before using it. Also make 
sure nothing is blocking the projector’s air intake vent. If it continues to 
overheat, clean the air intake vent; see page 47 for instructions.
flashing 
orangeThe projector lamp has turned off automatically because the projector has 
overheated. Let it cool for a few minutes, then turn it back on. Also make 
sure nothing is blocking the projector’s air intake vent. If it continues to 
overheat, clean the air intake vent; see page 47 for instructions.
flashing red 
at 2-second 
intervalsThere is an internal problem with the projector. Unplug it from the electrical 
outlet and contact EPSON for help. 
						

							54Solving Problems
Image or Sound Problems
No image appears or the No Signal message is displayed.

Check that the Power light is green and not flashing and the 
lens cover is off. If the 
Power light is orange, the projector is 
in sleep mode; press the 
Power button to wake it up.

Your computer’s screen saver may be on. Press a key on the 
computer keyboard.

The A/VMute feature may be turned on. Press the A/VMute 
button on the remote control to turn it off, if necessary.

Make sure the cables are connected correctly, as described in 
Chapter 1.

Make sure the correct image source is selected. Press the Source 
button on top of the projector if necessary. 

Try restarting your computer. You may need to set the display to 
appear on both the LCD screen and the projector, or to switch 
between them. See page 25 and check your laptop documentation 
for instructions.
The Not Supported message is displayed.
The current video signal is not compatible with your projector. See 
page 62 for a list of compatible signals.
The image isn’t square, but a trapezoid (keystone) shape.
This is caused by the projector not facing the screen squarely or by 
extending the projector’s legs to position the image. Position the 
projector to face the screen squarely or press and hold the + or – side 
of the 
Keystone button on top of the projector until the image is 
squared-up.  
						

							Solving Problems55
Only part of the computer image is displayed.

If the computer’s output resolution setting is higher than 
800
×600 for the (EPSON PowerLite 50c) or 1024×768 for the 
(EPSON PowerLite 70c), the image is resized. If the computer 
output is not compatible with this resizing, choose a different 
display setting as follows:
Windows: In Windows 95/98/Me/2000, right-click on the 
desktop, select 
Properties, click the Settings tab, and select the 
resolution you want. In Windows 3.x, use Windows Setup in the 
Main program group. See Windows help for more information.
PowerBook or Macintosh: Choose Control Panels under the 
Apple menu and then choose 
Monitors. In the Monitors screen, 
choose 
Options and select Macintosh Hi-Res Display or 
another 800
×600 (for the EPSON PowerLite 50c) or 
1024
×768 (for the EPSON PowerLite 70c) setting. For more 
information, see your PowerBook documentation. For supported 
display settings, see page 62.

You may need to modify existing presentation files if you created 
them for a different resolution. See your software manual for 
specific information.
The image or parts of it are blurred or out of focus.

Adjust the Brightness, Contrast, Sharpness, and/or Gamma 
settings on the Video menu. If you’re viewing a computer image, 
also try adjusting the Tracking and Sync settings. See page 39 for 
instructions on using the menu.
When you change video settings, you should be able to see the 
effect on the screen immediately. Feel free to experiment. You can 
always select Reset to return to the factory default settings. 

There may be dirt or smears on the lens. Clean the lens by gently 
wiping it with an alcohol-based cleaner on a soft cloth. See 
page 46 for more information.

Your video signal mode may not be detected automatically. Select 
Manual and then choose the correct signal for the Mode setting 
on the projector’s Video menu; see page 38 for instructions.