NEC VT570 User Manual page 64

Common Problems & Solutions (See also "Power/Status/Lamp Indicator" on page 56.)
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. See page 54.
• Check to see if the projector has overheated or the lamp usage exceeds 2100 hours (up to 3100 hours : Eco
• The lamp may fail to light. Wait a full minute and then turn on the power again.
• The lamp has reached the end of its usable life. Replace the lamp.
Will turn off • Ensure that the Power Management is off. See page 48.
No picture • Use the VIDEO, the S-VIDEO or the COMPUTER button (the SOURCE button on VT570/VT47) on the remote
• Ensure your cables are connected properly.
• Use menus to adjust the brightness and contrast. See page 41.
• Remove the lens cap.
• Reset the settings or adjustments to factory preset levels using the "Default" in the Menu. See page 50.
• Enter your registered keyword if the Security function is enabled. See page 45.
• When using with a notebook PC, be sure to connect between the projector and the notebook PC before turning
• See also the next page.
Picture suddenly • When one of the following happens, the Lamp mode automatically changes from Normal to Eco.
becomes dark
Color tone or hue is • Check if an appropriate color is selected in "Wall Color". If so, select an appropriate option. See page 40.
unusual • Adjust "Hue" in "Picture". See page 41.
Image isn't square to • Reposition the projector to improve its angle to the screen. See page 27.
the screen • Use the Keystone correction function to correct the trapezoid distortion. See page 29.
Picture is blurred • Adjust the focus. See page 28.
• Reposition the projector to improve its angle to the screen. See page 27.
• Ensure that the distance between the projector and screen is within the adjustment range of the lens. See
• 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 or the COMPUTER button (the
vertically, horizontally
or both
• Adjust the computer image manually with the Horizontal/Vertical in the "Advanced
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. pages
Indicator is lit or • See the POWER/STATUS/LAMP Indicator on page 56.
blinking
Cross color in RGB • Press the AUTO ADJUST button on the projector cabinet or the AUTO ADJ. button on the remote control. See
mode
• When "Off" is selected in Auto Adjust, adjust the computer image manually with Clock/Phase in "Advanced
For more information contact your dealer.
Check These Items
control is on. See pages 22 and 23.
mode). If there is insufficient ventilation around the projector or if the room where you're presenting is par-
ticularly warm, move the projector to a cooler location.
control to select your source (Computer, Video or S-Video). See page 25. If there is still no picture, press the
button again.
on the power to the notebook PC. In most cases signal cannot be output from RGB output unless the notebook
PC is turned on after connecting with the projector.
* 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.
* When there are no signals (blue or black screen)
source.
* When the image is muted using the PIC-MUTE button on the remote control
again to return to the Normal mode.
* When the room where you' re presenting is particularly warm
pages 13 for VT670/VT570/VT470 and
Should this happen, let the projector stand until there is no condensation on the lens.
SOURCE button on VT570/VT47) on the remote control to select your source (Video, S-Video or Computer).
See page 25.
VT670/VT470: AAA 2. See page 10.
VT570/VT47: Lithium coin cell (CR2032). See page 12.
page 31.
Page 2" in the menu. See page 48.
To return to the Normal mode, select another available
Move the projector to a cooler location.
14 for VT47.
10 for VT670/VT470 and
57
7. Appendix
Press the PIC-MUTE button
Page 2". See page 48.
12 for VT570/VT47.