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 Enter.
5. When you’re finished, press 
ESC or Menu to exit. 
note
The lamp usage timer shows 
0H until you’ve used the 
lamp for at least 10 hours.
VideoVideoAudioAudio
SettingSettingUsers LogoUsers LogoAdvanced1Advanced1
AboutAboutReset AllReset All
FrequencyFrequency
Video SourceVideo Source
V ---.---HzV ---.---Hz
Reset Lamp TimerReset Lamp Timer
H ---.---kHzH ---.---kHz
LampLamp1400H1400H
SYNC ModeSYNC Mode
SYNC PolaritySYNC Polarity
------------V ------V ------H ------H ------
ResolutionResolutionRefresh RateRefresh Rate---.-- Hz---.-- Hz----x    --------x    ----
Computer1Computer1Input SignalInput Signal: : :
: :
:
: :Analog-RGBAnalog-RGB
ExecuteExecute
[    ]: Select[    ]: Select[    ]: Enter[    ]: Enter[Menu]: Exit[Menu]: Exit
EffectEffect
Advanced2Advanced2
Lamp usage 
						

							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 
cushioning around the case. (An optional ATA molded hard shell 
case is available from EPSON; see page 14.)note
EPSON shall not be liable 
for any damages incurred 
during transportation. 
						

							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 to highlight menu items.
3. After highlighting a menu item, press the 
Enter button on the 
remote control or on the projector to select it. 
4. To exit the Help system, press the 
? Help button.
If none of the suggestions solves your problem, see additional 
solutions to problems in the following sections.
Help button on 
projector
doesnt 
						

							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 complete description of the 
projector’s status lights and their meaning:
Temperature light
Lamp light
Power light
Status lights
Light Status Description
orange The projector is in sleep mode. You can unplug it or press the Power 
button to turn it on.
flashing green The projector is warming up. Wait for the image to appear.
green The projector is operating normally.
flashing orange The projector is cooling down. You can’t turn it back on (and you should 
not unplug it) until the light stops flashing and remains orange. 
flashing red  There is a problem with the fan or temperature sensor. Stop using the 
projector, disconnect the power cable, and contact EPSON or your 
dealer. 
						

							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 sure the room 
temperature is not above 95 °F (35 °C) and there is plenty of space 
around and under the projector for ventilation. 
The air filters may be clogged. Clean or replace them as described on 
page 169.
If the projector continues to overheat after you clean the air filter, the 
problem may be caused by damage to the cooling fan or temperature 
sensor. Contact EPSON for help.
Warning: Except as specifically explained in this User’s Guide, do not 
attempt to service this product yourself.
flashing orange It’s time to replace the lamp. See page 170 for instructions. If you 
continue to use the lamp after the replacement warning, there is an 
increased possibility that the lamp may break.
flashing red The lamp may be burned out. First make sure the lamp cover is securely 
installed. If that’s not the problem, remove the lamp and replace it as 
described on page 170. If this does not resolve the problem, contact 
EPSON as described on page 191.
flashing red Power is cut off because of an internal problem. Remove the power cord 
and contact EPSON for help, as described on page 191.
Status lights
Light Status Description 
						

							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 
Brightness Control setting is set to Low. 
Make sure you have a spare lamp handy if the usage hours on this 
menu are close to the life span of your lamp. If you’ve installed a 
new lamp, be sure to reset the lamp timer (see page 173).
note
The information displayed 
depends on the input signal 
currently selected.Lamp usage 
						

							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 Power button on the remote control or on 
the projector.
■Press the A/V Mute button to make sure the picture has not been 
turned off temporarily. 
■The attached computer may be in sleep mode or displaying a 
black screen saver. Try pressing a key on the computer.
You’ve connected a computer and see a blue screen with the 
message 
No Signal displayed.
■Make sure the cables are connected correctly, as described in 
Chapter 3.
■Try restarting your computer.
■If you’ve connected a computer and one or more video sources, 
you may need to press one of the 
Source buttons on the projector 
or remote control to select the correct source. Allow a few seconds 
for the projector to sync up after pressing the button.