NEC VT70S User Manual

Also see for VT47 Series: Control commands Command guide Command guide Control commands Specifications

Contents

NEC VT70S User Manual Manual pdf 64 page image

577. AppendixCommon Problems & Solutions (See also "Power/Status/Lamp Indicator" on page 56.)Does not turn onWill turn offNo picturePicture suddenlybecomes darkColor tone or hue isunusualImage isn’t square tothe screenPicture is blurredImage is scrollingvertically, horizontallyor bothRemote control doesnot workIndicator is lit orblinkingCross color in RGBmode• Check that the power cable is plugged in and that the power button on the projector cabinet or the remotecontrol is on. See pages 22 and 23.• 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 : Ecomode). 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.• 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.• Ensure that the Power Management is off. See page 48.• Use the VIDEO, the S-VIDEO or the COMPUTER button (the SOURCE button on VT570/VT47) on the remotecontrol to select your source (Computer, Video or S-Video). See page 25. If there is still no picture, press thebutton again.• 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 turningon the power to the notebook PC. In most cases signal cannot be output from RGB output unless the notebookPC 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.• See also the next page.• When one of the following happens, the Lamp mode automatically changes from Normal to Eco.* When there are no signals (blue or black screen) → To return to the Normal mode, select another availablesource.* When the image is muted using the PIC-MUTE button on the remote control → Press the PIC-MUTE buttonagain to return to the Normal mode.* When the room where you' re presenting is particularly warm → Move the projector to a cooler location.• Check if an appropriate color is selected in "Wall Color". If so, select an appropriate option. See page 40.• Adjust "Hue" in "Picture". See page 41.• Reposition the projector to improve its angle to the screen. See page 27.• Use the Keystone correction function to correct the trapezoid distortion. See page 29.• 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. Seepages 13 for VT670/VT570/VT470 and 14 for VT47.• Condensation may form on the lens if the projector is cold, brought into a warm place and is then turned on.Should this happen, let the projector stand until there is no condensation on the lens.• Use the VIDEO, the S-VIDEO or the COMPUTER button (the SOURCE button on VT570/VT47) on the remotecontrol to select your source (Video, S-Video or Computer).See page 25.• Adjust the computer image manually with the Horizontal/Vertical in the “Advanced → Page 2”. See page 48.• Install new batteries.VT670/VT470: AAA2. See page 10.VT570/VT47: Lithium coin cell (CR2032). See page 12.• Make sure there are no obstacles between you and the projector.• Stand within 22 feet (7 m) of the projector. pages 10 for VT670/VT470 and 12 for VT570/VT47.• See the POWER/STATUS/LAMP Indicator on page 56.• Press the AUTO ADJ. button on the projector cabinet or the remote control. See page 31.• When “Off” is selected in Auto Adjust, adjust the computer image manually with Clock/Phase in “Advanced →Page 2” in the menu. See page 48.Problem Check These ItemsFor more information contact your dealer.