Epson Powerlite 7900p Multimedia Projector Users Guide

101
1
Maintaining the Projector
Your projector needs little maintenance. All you have to do on a 
regular basis is keep the lens clean. Any dirt or smears on the lens may 
show up on your projected image.
You also need to periodically clean the air filters at the side and base of 
the projector. A clogged air filter can block ventilation needed to cool 
the projector.
The only parts you should replace are the lamp and air filters (when 
you order a new lamp, replacement filters come with it). If any...

102Maintaining the Projector
Cleaning the Lens
Clean the lens whenever you notice dirt or dust on the surface.
■Use a canister of compressed air to remove dust.
■To remove dirt or smears on the lens, use lens-cleaning tissue. If 
necessary, moisten a soft cloth with lens cleaner and gently wipe 
the lens surface.
Cleaning the Projector Case
Before you clean the case, first turn off the projector and unplug the 
power cord.
■To remove dirt or dust, wipe the case with a soft, dry, lint-free 
cloth.
■To...

Maintaining the Projector103
Cleaning the Air Filters and Vents
Clean the air filters and air vents after every 100 hours of use. If they 
are not cleaned periodically, they can become clogged with dust, 
preventing proper ventilation. This can cause overheating and damage 
the projector. 
Follow these steps:
1. Turn off the projector and unplug the power cord.
2. To clean the intake vents, Epson recommends using a small 
vacuum cleaner designed for computers and other office 
equipment. If you don’t...

104Maintaining the Projector4. If the dirt is difficult to remove or a filter is broken, replace the 
filters as in the following section. Contact your dealer or call 
Epson at (800) 873-7766 in the United States to obtain new ones. 
In Canada, please call (800) 463-7766 for dealer referral.
Replacing the Lamp and Air Filters
The projection lamp typically lasts from 2000 to 3000 hours, 
depending on the Brightness Control setting used (see page 68). 
Selecting the low brightness setting maximizes the...

Maintaining the Projector105
4. Turn the projector over and remove the air filters at the side and 
bottom of the projector.
5. Insert the two new air filters. They should click into place.
6. Insert the screwdriver supplied with the spare lamp, or some other 
flat-tipped screwdriver, into the space beside the air vent. Gently 
slide the lamp cover until the arrow on the cover is aligned with 
the arrow on the projector. Then lift the cover off.
Slide the filter up 
here . . .
. . . and here
1
Insert the...

106Maintaining the Projector7. Loosen the two screws holding the lamp in place (you don’t need 
to remove them). 
8. Grasp the wire handle as shown and pull the lamp straight out.
9. Gently insert the new lamp. 
10. Once the lamp is fully inserted, tighten its screws and replace the 
cover. (The projector won’t come on if the lamp cover is loose.) 
11. Reset the lamp timer as described in the next section. 
warning
This product includes a 
lamp component that 
contains mercury (Hg). 
Please consult you...

Maintaining the Projector107
Resetting the Lamp Timer
After you replace the lamp, you need to reset the lamp timer using the 
projector’s menu. 
1. Plug the projector in and turn it on.
2. Press the 
Menu button on the remote control (or on the 
projector’s control panel). You see the main menu.
3. Use the  pointer button on the remote control (or the arrow 
buttons on the projector) to highlight 
About, then press Enter. 
You see this screen: 
4. Select 
Reset Lamp Timer, then press Enter. You see this...

108Maintaining the Projector
Transporting the Projector
The projector contains many glass and precision parts. Follow these 
guidelines to prevent injury or damage:
■When hand-carrying the projector, you should use the handle to 
lift it only a short distance (for example, to set it on a table). 
■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...

109
1
Solving Problems
This chapter helps you solve problems with your projector, and tells 
you how to contact technical support for problems you can’t solve 
yourself. This chapter explains the following:
■Using the projector’s on-screen help system
■What to do when the projector’s status lights flash
■Solving problems with the image or sound
■Solving problems with Easy Management
■Solving problems with the remote control
■Contacting technical support 

110Solving Problems
Using On-Screen Help
If the image doesn’t look right or your audio isn’t working, you can 
get help by pressing the blue 
? Help button on top of the projector or 
on the remote control. The following choices are available:
■Problems with image
■Problems with sound
■Language change
Follow these steps to get help:
1. Press the blue 
? Help button on the projector. 
You see the Help menu:
2. Use the  pointer button on the remote control or the arrow 
buttons on the projector to...