Epson Powerlite 7900p Multimedia Projector Users Guide

Solving Problems111
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...

112Solving Problems
The   Power light is flashing orange and you cannot turn 
on the projector.
The lamp is cooling down. Wait until the light turns off and then 
press the 
Power button to turn on the projector.
The   Power light does not come on.
Make sure the power cord is connected securely both at the power 
outlet and the projector. If you have just replaced the lamp, make sure 
the cover is securely fastened.
flashing red
flashing orangeRapid cooling in progress. Although this is not an abnormal...

Solving Problems113
Viewing Lamp Usage and Other Information
Use the About menu to view information about image source, 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 lamp typically lasts from 2000 to 3000 hours, depending on 
the selected Brightness Control setting (see page 68). If the 
number shown is...

114Solving 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 P Power light stops 
flashing and remains orange; then press the 
Power button again.
■Try pressing the...

Solving Problems115
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.
■Depending on your computer’s...

116Solving Problems
The message Not Supported is displayed.
■Make sure the correct Input Signal is selected in the Setting 
menu (see page 74).
■Make sure your computer’s resolution doesn’t exceed UXGA 
(1600 
× 1200), and the frequency is supported by the projector 
(see page 128). If necessary, change your computer’s resolution 
setting as described in the following section. 
Only part of the computer image is displayed.
■Press the Auto button on the remote control.
■Make sure the image Position...

Solving Problems117
The image isn’t square, but keystone-shaped.
■If the top or bottom of the image is broader, press the Sync + or 
Sync – button on the projector until the image is square.
■If the projector is angled toward the screen from the left or right, 
the image will be broader on one side. Center the projector in 
front of the middle of the screen, facing the screen squarely. If this 
doesn’t work, press the 
Tracking + or Tracking – button on the 
projection until the image is square.
■If the...

118Solving Problems
■Make sure the projector is within the recommended projection 
distance (2.5 to 36.5 feet).
■Adjust the Sharpness setting on the Video menu (see Chapter 
4). When you change video settings, you should be able to see the 
effect on the screen immediately. If you’re projecting from a 
computer, you may also need to adjust the tracking and sync as 
described in the next section. If you don’t like the new settings, 
you can always select 
Reset to return to the factory default 
settings....

Solving Problems119
3. Adjust the Sync setting to increase the sharpness of the 
image. 
The colors of the image are not right.
■If you’re displaying a computer image, use the Color Mode 
option in the projector’s Video menu to adjust the color. If you’re 
displaying video, adjust the 
Color, Tint, and Color Mode 
settings on the Video menu.
■Try changing the Color Adjustment setting on the Advanced1 
menu.
■Check your computer display settings to correct the color balance.
There is no sound.
■Make sure...

120Solving Problems
Solving Easy Management Problems 
You don’t see your projector in the EMP Monitor window.
■Make sure that you’ve connected the projector to the network and 
configured it correctly; see page 87. Also, make sure you’ve 
registered the projector with EMP Monitor. See page 90.
■Make sure that Standby Mode in the Advanced1 menu is set to 
Network ON.
■If the computer you are using is running Windows XP, 2000, or 
NT 4.x, you must be logged in as the Administrator.
■Try restarting your...