NEC LT280 User Manual page 118

Common Problems & Solutions (
Problem
Does not turn on • Check that the power cable is plugged in and that the power button on the projector cabinet or the remote
• Ensure that the lamp cover is installed correctly. (
• Check to see if the projector has overheated. If there is insufficient ventilation around the projector or if the
• Check to see if the lamp usage exceeds 2100 hours (up to 3100 hours : Eco mode). If so, replace the lamp.
• The lamp may fail to light. Wait a full minute and then turn on the power again.
Will turn off • Ensure that the Power Management or Off Timer is off. (
No picture • Use the SOURCE button on the projector cabinet or the VIDEO, the S-VIDEO, the COMPUTER 1, the COM-
• Ensure your cables are connected properly.
• Use menus to adjust the brightness and contrast. (
• Check to see if the image is muted. (
• Remove the lens cap.
• Reset the settings or adjustments to factory preset levels using the Reset in the Menu. (
• Enter your registered keyword if the Security function is enabled. (
• Be sure to connect the projector and notebook PC while the projector is in standby mode and before turning on
• See also the next page.
Color tone or hue is • Check if an appropriate color is selected in [Wall Color]. If not, select an appropriate option. (
unusual • Adjust [Hue] in [Adjust]. (
Image isn't square to • Reposition the projector to improve its angle to the screen. (
the screen • Use the 3DReform function to correct the trapezoid distortion. (
Picture is blurred • Adjust the focus. (
• Reposition the projector to improve its angle to the screen. (
• Ensure that the distance between the projector and screen is within the adjustment range of the lens. (
• Condensation may form on the lens if the projector is cold, brought into a warm place and is then turned on.
Image is scrolling • Use the SOURCE button on the projector cabinet or the VIDEO, the S-VIDEO, the COMPUTER 1, the COM-
vertically, horizontally
or both
• Adjust the computer image manually with the [Clock]/[Phase] in [Adjust]
Remote control does • Install new batteries. (
not work • Make sure there are no obstacles between you and the projector.
• Stand within 22 feet (7 m) of the projector. (
Indicator is lit or • See the POWER/STATUS/LAMP Indicator. (
blinking
Vertical stripes in RGB • Press the AUTO ADJUST button on the projector cabinet or the AUTO ADJ. button on the remote control. (
mode
• Adjust the computer image manually with the [Clock]/[Phase] in [Adjust]
USB mouse does not • Make sure that your USB mouse is properly connected to the projector.
work
For more information contact your dealer.
"Power/Status/Lamp Indicator" on page 107)
Check These Items
control is on. ( page 23, 24)
room where you are presenting is particularly warm, move the projector to a cooler location.
After replacing the lamp, reset the lamp hours used. (
PUTER 2, the COMPUTER 3 (LT380 only), COMPONENT, the VIEWER or the LAN button on the remote control
to select your source. ( page 26)
the power to the notebook PC.
In most cases the output signal from the notebook PC is not turned on unless connectedto the projector be-
fore being powered up.
* If the screen goes blank while using your remote control, it may be the result of the computer's screen-
saver or power management software.
page 71)
page 28)
11)
Should this happen, let the projector stand until there is no condensation on the lens.
PUTER 2, the COMPUTER 3 (LT380 only), COMPONENT, the VIEWER or the LAN button on the remote control
to select your source (Video, S-Video, Computer, Component, Viewer or LAN). (
page 9)
page 31)
The projector may not support some brands of a USB mouse.
page 105)
page 101)
page 94, 96)
page 71)
page 34)
page 27)
page 29)
page 27)
page 9)
page 107)
108
8. Appendix
page 101)
page 42)
page 78)
page 26)
[Image Options]. ( page 72)
[Image Options].( page 72)
page