Epson Powerlite 7850p Multimedia Projector Users Guide

Maintaining the Projector171
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 another 
flat-tipped screwdriver, into the space beside the air vent. Gently 
slide the lamp cover off.
Slide the filter up 
here . . .
. . .and here
1
Insert the screwdriver here 

172Maintaining 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.  

Maintaining the Projector173
Resetting the Lamp Timer
After you replace the lamp, you need to reset the lamp timer using the 
projector’s menu. 
1. Press the 
Menu button on the remote control (or on the 
projector’s control panel). You see the main menu.
2. 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: 
3. Select 
Reset Lamp Timer, then press Enter. You see this 
prompt:
4. Select
 Yes, then press...

174Maintaining the Projector
Transporting the Projector
The projector contains many glass and precision parts. Follow these 
guidelines to prevent damage:
■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 a long distance, first place it in a 
hard-shell shipping case, and then pack it in a firm box, placing...

Solving Problems175
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 EasyManagement
■Solving problems with the remote control
■Contacting technical support 

176Solving 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:
■Help for the image
■Help for the sound
■Language selection (Language)
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...

Solving Problems177
Checking Projector Status
If your projector isn’t working correctly, first turn it off, wait for it to 
cool (the P power light stops flashing orange), 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.
What To Do When the Lights Flash
The lights on top of the projector indicate the projector’s status and 
let you know when a problem occurs.
Refer to the following table for a...

178Solving Problems
flashing orange Rapid cooling in progress. Although this is not an abnormal condition, 
projection will stop automatically if the temperature rises higher. Make 
sure there is plenty of space around and under the projector for 
ventilation, and that the air filters and vents are clear.
red The projector is overheating, which turns the lamp off automatically. Wait 
until the cooling fan stops, then unplug the power cord. Plug the power 
cord back in and press the Power button. Make...

Solving Problems179
Viewing Lamp Usage and Other Information
Use the About menu to view information about the display settings of 
your computer and the number of hours the lamp has been used. 
1. Press the 
Menu button, then highlight the About menu and press 
Enter. 
You see the lamp usage hours and various input signal settings on 
the right:
The life span of the lamp is about 2000 hours if the 
Brightness 
Control
 setting in the Advanced 2 menu is set to High (default), 
and 3000 hours if the...

180Solving Problems
Solving Problems with the 
Image or Sound
No image appears on the screen.
■Check that the P power light is green, not flashing, and the lens 
cap is off. 
■The projector may be in sleep mode. If the P power light is 
orange, press the 
Power button to turn the projector on.
■If the power was switched off and then on again, the projector 
may still be cooling down. Wait until the power light stops 
flashing and remains orange; then press the 
Power button again.
■Try pressing the other...