Epson Powerlite 78 Multimedia Projector Users Guide

							Maintaining the Projector81
2. Select the Reset menu and press Enter. You see this screen:
3. Select 
Reset Lamp Hours and press Enter. 
4. When you see the prompt, select
 Yes and press Enter.
5. When you’re finished, press 
Menu to exit.
Checking Lamp Usage 
To check the number of hours the lamp has been used, press the 
Menu button and highlight the Info menu. You see a screen like this:
The life span of the lamp is about 3000 hours if the 
Brightness 
Control
 setting in the Settings menu is set to High (default), and 
4000 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.
note
The information displayed 
depends on the input signal 
currently selected.
If you have used the 
projector for less than 
10 hours, the hours are 
listed as 0H. 
						

							82Maintaining the Projector
Replacing the Remote Control Batteries
Replace the batteries in the remote control as described below: 
1. Turn the remote control over.
2. Press in on the catch on the battery cover as you lift the cover off.
3. Install two AA alkaline batteries, inserting the 
+and– ends as 
shown.
4. Replace the battery cover and press it down until it clicks into 
place.
caution
When replacing batteries, 
take the following 
precautions:
■Replace the batteries as 
soon as they run out. If the 
batteries leak, wipe away 
battery fluid with a soft 
cloth. If fluid gets on your 
hands, wash immediately.
■Do not expose batteries to 
heat or flame.
■Dispose of used batteries 
according to local 
regulations.
■Do not use batteries other 
than those specified in this 
User’s Guide and do not 
use batteries of different 
types or mix old and new 
batteries.
■Keep these batteries out of 
the reach of children. 
Batteries are choking 
hazards and are very 
dangerous if swallowed.
PowerLite S6 Series/PowerLite 78 PowerLite W6 Series
PowerLite S6 Series/PowerLite 78 PowerLite W6 Series
PowerLite S6 Series/PowerLite 78 PowerLite W6 Series 
						

							Maintaining the Projector83
Transporting the Projector
The projector contains many glass and precision parts. When 
hand-carrying the projector, use the carrying case.
Follow these guidelines to prevent damage when transporting it: 
■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, then pack it in a firm box with 
cushioning around the case. 
■Close the A/V Mute slide (lens cover).
■If an SD card is installed or a USB device is connected, remove it 
from the projector (PowerLite W6 Series only).
■Return the projector feet to their stored (highest) positions.
note
Epson shall not be liable for 
any damages incurred 
during transportation. 
						

							84Maintaining the Projector 
						

							6
85
6
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. The following information is included:
■Using the projector’s on-screen help system
■What to do when the projector’s status lights flash
■Solving projector operation problems
■Solving problems with the image or sound
■Solving problems with the remote control
■Contacting technical support 
						

							86Solving 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 
? Help button on the projector or the remote 
control.
1. Press the 
? Help button on the remote control or on the 
projector. 
You see the Help menu:
2. Use the arrow buttons on the remote control or the projector to 
highlight menu items.
3. Press the 
Enter button on the remote control or the projector to 
select the menu item and read the solutions. 
4. To exit the help system, press the 
? Help button.
If none of the suggestions solve your problem, see additional solutions 
to problems in the following sections. 
						

							Solving Problems87
Checking Projector Status
If your projector isn’t working correctly, first turn it off 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.
Refer to the following tables for a complete description of the 
projector’s status lights:
Temperature 
lightLamp light Power light
Power light status
P
Power light status Description
Flashing green The projector is warming up. Wait for the image to appear.
Green The projector is operating normally.
Orange The projector is in sleep or standby mode. You can unplug it or press the 
Ppower button to turn it on.
Red, flashing red, or 
orangeThere is a problem with the projector. Check the next table to diagnose the 
problem.  
						

							88Solving Problems Error light(s) status
Error light(s) status Description
PGreen or orange
Flashing orange
OffIt’s time to replace the lamp. See page 78 for instructions. If you continue 
to use the lamp after the replacement warning, there is an increased 
possibility that the lamp may break.
PRed
Off
Flashing orangeRapid cooling is 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 filter and vents are clean.
PRed
Off
RedThe projector is overheating, which turns the lamp off automatically. 
Wait until the projector switches to standby mode (about 5 minutes). Make 
sure there is plenty of space around and under the projector for ventilation. 
The air filter may be clogged. Clean or replace the air filter as described on 
pages 76 to 77.
If you’re using the projector above an altitude of 4,900 feet (1,500 meters), 
turn on High Altitude Mode in the Operation menu (see page 66).
If the projector continues to overheat after you clean the air filter, stop 
using the projector, disconnect the power cord, and contact Epson for help 
as described on page 96.
Warning: Except as specifically explained in this User’s Guide, do not 
attempt to service this product yourself.
PFlashing red
Off
Flashing redThe projector has an internal problem. Stop using the projector, disconnect 
the power cord, and contact Epson for help, as described on page 96.
PRed
Off
Flashing redThere is a problem with the fan or temperature sensor. Stop using the 
projector, disconnect the power cord, and contact Epson as described on 
page 96.
PRed
Flashing red
OffThe lamp may be burnt out. First make sure the lamp cover is securely 
installed. If that’s not the problem, the air filter may be clogged. Clean or 
replace the air filter as described on pages 76 to 77.
If this does not resolve the problem, let the lamp cool and then remove it. If 
the lamp is cracked, replace it as described on page 78. If the lamp is not 
cracked, reinstall it. If reinstalling doesn’t work, replace the lamp.
If you’re using the projector above an altitude of 4,921 feet (1,500 meters), 
turn on High Altitude Mode in the Operation menu (see page 66).
If none of these suggestions resolves the problem, contact Epson as 
described on page 96. 
						

							Solving Problems89
Solving Projector Operation Problems
The power doesn’t turn on.
■If the projector doesn’t turn on when you press the Ppower 
button, make sure the power cord is connected to the projector 
and plugged into a working electrical outlet.
■The power cord may be defective. Disconnect the cord from the 
outlet and contact Epson as described on page 96.
■If you’re using the Direct Power On function and you 
immediately plug the power cord back in after unplugging it, the 
power may not turn back on. Press the Ppower button to turn 
the projector back on.
The buttons on the projector don’t work.
If the Control Panel Lock function has been enabled, you can’t use the 
buttons on the projector. Try using the remote control instead, or 
press and hold the projector’s 
Enter button for seven seconds to 
release the lock (see page 72).
Solving Problems With the Image 
or Sound
No image appears on the screen.
■Check that the Ppower light is green (not flashing) and that the 
A/V Mute slide is open. Also press the A/V Mute button on the 
remote control to make sure the picture has not been turned off 
temporarily.
■The projector may be in standby or sleep mode. If the Ppower 
light is orange, press the Ppower button to turn the projector on.
■If the power was switched off and then on again, the projector 
may be cooling down. Wait until the Ppower light stops flashing 
and remains orange; then press the Ppower button again. 
						

							90Solving Problems
■The attached computer may be in sleep mode or displaying a 
black screen saver. Try pressing a key on the computer.
■If you are projecting from a DVD player or other video source, 
make sure you turn it on and press its 
Play button.
■If you are projecting from a composite or S-Video video source, 
make sure the Video Signal setting is correct (see page 63).
■You can also try resetting all of the menu settings (see page 61).
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 
beginning on page 24.
■If you’ve connected a computer and one or more video sources, 
you may need to press the 
Search or Source Search button to 
select the correct source. Allow a few seconds for the projector to 
sync up after pressing the button.
■Make sure the power for your connected equipment is turned on.
If you’re using a PC notebook: 
■Hold down the Fn key on the keyboard and press the function 
key that lets you display on an external monitor. It may have an 
icon such as  , or it may be labelled 
CRT/LCD. Allow a few 
seconds for the projector to sync up after pressing it. Check your 
notebook’s manual or online help for details. 
On most systems, the   key lets you toggle between the LCD 
screen and the projector, or display on both at the same time.
If you connect the notebook while the projector or computer are 
already turned on, the function 
Fn key that changes the 
computer’s image signal to external output may not work. Turn 
the computer and the projector off and then back on again.
■Depending on your computer’s video card, you might need to use 
the Display utility in the Control Panel to make sure that both the 
LCD screen and external monitor port are enabled. See your 
computer’s documentation or online help for details.