Epson Powerlite Pro G5750wunl Users Guide

							Maintaining the Projector141
7. Once the lamp is fully inserted, tighten its screws.
8. Replace the lamp cover, then tighten its screws.
9. Reset the lamp timer as described in the next section. 
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 
Reset, then 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. 
						

							142Maintaining the Projector5. 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 projection lamp is about 2000 hours if 
Power 
Consumption
 in the Settings menu is set to Normal (default), and 
3000 hours if 
Power Consumption is set to ECO. Make sure you 
have a spare lamp handy if the usage hours on this menu are close to 
the life span of your lamp.
Replacing the Batteries
Replace the batteries in the remote control as described below: 
1. Turn the remote control over. 
2. Push the tab on the battery cover 
as you lift the cover off.
note
The information displayed 
depends on the input signal 
currently selected.
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 and do not put 
them in water.
■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. 
						

							Maintaining the Projector143
3. Install two AA alkaline batteries, 
inserting the 
+ and – ends as 
shown.
4. Position the cover as shown, then 
press down until it snaps into 
place.
Transporting the Projector
The projector contains many glass and precision parts. Follow these 
guidelines to prevent damage: 
■If you are moving the projector by hand, use the projector handle.
■Attach the lens cover to the lens.
■Return the projector feet to their stored (highest) positions.
Additionally, follow these guidelines when you are transporting the 
projector a long distance:
■Turn the vertical lens shift dial so that the lens is in its lowest 
position.
■When packing the projector, use the original packaging material if 
possible, including the protective lens pads. If you do not have the 
original packaging, use equivalent materials, placing plenty of 
cushioning around the projector to protect it from shock.
note
Epson shall not be liable for 
any damages incurred 
during transportation. 
						

							144Maintaining the Projector 
						

							7
145
7
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 network problems
■Solving problems with the remote control
■Contacting technical support 
						

							146Solving 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 back of the projector or 
on the remote control.
1. Press the 
? Help button on the remote control or on the 
projector. 
You see the Help menu:
2. Use the  pointer button on the remote control or the 
navigational buttons on the projector to highlight menu items.
3. Press the 
Enter button on the remote control or on the projector 
to select the menu item. 
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 Problems147
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 table for a complete description of the 
projector’s status lights:
Temperature light
Lamp light
Power light
Wireless LAN status light
Status lights
Light Status Description
Orange The projector is in sleep or standby mode. You can unplug it or press 
the 
P 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. 
						

							148Solving Problems
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.
The projector is setting itself up for network monitoring.
Flashing green The air filter may be clogged. Clean or replace the air filter as 
described on pages 134 to 138.
Red or 
flashing redThere is a problem with the projector. Check the other two lights and 
the information on page 149 to diagnose the problem. 
Flashing orange It’s time to replace the lamp. See page 138 for instructions. If you 
continue to use the lamp after the replacement warning, there is an 
increased possibility that the lamp may break.
Flashing orange Rapid 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 vents are clear.
The air filter may be clogged. Clean or replace the air filter as 
described on pages 134 to 138.
Red The projector is overheating, which turns the lamp off automatically. 
Wait until the projector switches to standby mode (about 5 minutes). 
Make sure the room temperature is not outside the required 
temperature range of the projector (see page 173), and 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 134 to 138.
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 126).
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 as described on 
page 161.
Warning: Except as specifically explained in this User’s Guide, do 
not attempt to service this product yourself.
Flashing red Power is cut off because of an internal problem. Unplug the power 
cord and contact Epson for help, as described on page 161.
Flashing red
Status lights (continued)
Light Status Description 
						

							Solving Problems149
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 161.
■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.
Flashing red  There is a problem with the fan or temperature sensor. Stop using 
the projector, disconnect the power cord, and contact Epson as 
described on page 161.
Flashing red The 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 134 
to 138.
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 138. 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 4,900 feet (1,500 
meters), turn on High Altitude Mode in the Operation menu (see 
page 126).
If none of these suggestions resolves the problem, contact Epson as 
described on page 161.
Status lights (continued)
Light Status Description 
						

							150Solving Problems
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 (make 
sure it is set to the correct ID). See page 125 for information about the 
Control Panel Lock function.
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 
lens cover is removed. 
■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.
■Press the A/V Mute button on the remote control 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.
■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 video source, make sure the Video 
Signal setting is correct (see page 116).
■You can also try resetting all of the configuration menu settings. 
See page 113.
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 30.