Troubleshooting - InFocus LP740B User Manual

Troubleshooting

Problem: Nothing on projection screen
Make sure that the power cord is properly connected to a func-
•
tional AC electrical outlet. Make sure that the power cord is
also properly connected to the projector.
If the projector is plugged into a power strip, make sure the
•
power strip is turned on.
Make sure you have removed the lens cap on the projection
•
lens at the front of the projector.
Make sure the projector is switched on.
•
Check the projector's lamp to ensure that it is securely con-
•
nected in the lamp module. See "Replacing the Projection
Lamp" on page 26.
Make sure that the cables do not have any bent pins.
•
Problem: Color or text not being projected
You might need to adjust the brightness up or down until the
•
text is visible. Refer to "Bright" on page 15 for more informa-
tion.
Problem: The screen resolution is not right
Make sure the computer's video card is set for a resolution of
•
no greater than 1600x1200.
Problem: Image isn't centered on the screen
Reposition the image. Refer to "H-Position, V-Position" on
•
page 18.
Be sure the projector is at a 90 degree angle to the screen.
•
Problem: Only the blue start-up screen displays
Verify that the cables are connected correctly. See page 7
•
through page 8 for connection procedures.
Verify that the proper input source is connected. See "Source"
•
on page 14.
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