NEC VT470 manual Appendix, Problem Check These Items

Page 61

 

7. Appendix

Common Problems & Solutions (See also "Power/Status/Lamp Indicator" on page 53.)

 

 

 

Problem

Check These Items

 

Does not turn on

• Check that the power cable is plugged in and that the power button on the projector cabinet or the remote

 

 

control is on. See pages 20 and 21.

 

 

• Ensure that the lamp cover is installed correctly. See page 51.

 

 

• Check to see if the projector has overheated or the lamp usage exceeds 2100* hours (up to 3100* hours : Eco

 

 

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.

 

 

* VT575 and VT47: 3100 hours (up to 4100 hours in Eco mode).

 

 

• 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 45.

 

 

 

 

No picture

• Use the VIDEO, the S-VIDEO or the COMPUTER button on the remote control to select your source (Computer,

 

 

Video or S-Video). See page 23. If there is still no picture, press the button again.

 

 

• Ensure your cables are connected properly.

 

 

• Use menus to adjust the brightness and contrast. See page 38.

 

 

• Remove the lens cap.

 

 

• Reset the settings or adjustments to factory preset levels using the “Default” in the Menu. See page 47.

 

 

• Enter your registered keyword if the Security function is enabled. See page 42.

 

 

• When using with a notebook PC, be sure to connect between the projector and the notebook PC before turning

 

 

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.

 

 

• See also the next page.

 

 

 

 

Picture suddenly

• When one of the following happens, the Lamp mode automatically changes from Normal to Eco.

 

becomes dark

* When there are no signals (blue or black screen) To return to the Normal mode, select another available

 

 

source.

 

 

* When the image is muted using the PIC-MUTE button on the remote control Press the PIC-MUTE button

 

 

again to return to the Normal mode.

 

 

* When the room where you' re presenting is particularly warm Move the projector to a cooler location.

 

 

 

 

Color tone or hue is

• Check if an appropriate color is selected in "Wall Color". If so, select an appropriate option. See page 37.

 

unusual

• Adjust "Hue" in "Picture". See page 38.

 

 

 

 

Image isn’t square to

• Reposition the projector to improve its angle to the screen. See page 24.

 

the screen

• Use the Keystone correction function to correct the trapezoid distortion. See page 26.

 

 

 

 

Picture is blurred

• Adjust the focus. See page 25.

 

 

• Reposition the projector to improve its angle to the screen. See page 24.

 

 

• Ensure that the distance between the projector and screen is within the adjustment range of the lens. See

 

 

pages 11 for VT676/VT670/VT575/VT470 and 12 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.

 

 

 

 

Image is scrolling

• Use the VIDEO, the S-VIDEO or the COMPUTER button on the remote control to select your source (Video, S-

 

vertically, horizontally

Video or Computer). See page 23.

 

or both

• Adjust the computer image manually with the Horizontal/Vertical in the “Advanced Page 2”. See page 45.

 

 

 

 

Remote control does

• Install new batteries.See page 10.

 

• Make sure there are no obstacles between you and the projector.

 

not work

• Stand within 22 feet (7 m) of the projector. See page 10.

 

 

 

 

Indicator is lit or

• See the POWER/STATUS/LAMP Indicator on page 53.

 

blinking

 

 

Cross color in RGB

• Press the AUTO ADJ. button on the projector cabinet or the remote control. See page 28.

 

mode

• When “Off” is selected in Auto Adjust, adjust the computer image manually with Clock/Phase in “Advanced

 

 

Page 2” in the menu. See pages 45 and 46.

 

 

 

 

For more information contact your dealer.

54

Image 61
Contents VT676/VT670/VT575/VT470/VT47 Precautions Safety CautionsDOC Compliance Notice for Canada only Installation Important SafeguardsImportant Information RF Interference for USA only Place the projector in a horizontal positionIii Important Information Fire and Shock PrecautionsImportant Information Lamp Replacement Table of Contents Table of Contents For VT676, VT670 and VT470 only Whats in the Box?Introduction to the Projector Features youll enjoyIntroduction Introduction Front/Top Part Names of the ProjectorRear Introduction Bottom Introduction Top Features VT676/VT670/VT575/VT470 VT47 Part Names of the Remote Control Help Button Volume +- ButtonFreeze Button Computer 1/2 ButtonRemote Control Precautions Introduction Battery InstallationOperating Range for Wireless Remote Control Selecting a Location VT676/VT670/VT575/VT470 Setting Up the Screen and the Projector240 Installation and Connections Selecting a Location VT47Distance Chart Installation and Connections Throw Distance and Screen SizeReflecting the Image Installation and ConnectionsMaking Connections Connecting Your PC or Macintosh ComputerEnabling the computer’s external display VT676/VT670/VT575/VT470VT47To connect Scart output RGB To do so Installation and Connections Connecting an External MonitorAudio Equipment To make these connections, simply OUT Turning on the Projector Projecting an Image Basic OperationTo select a menu language, follow these steps Projecting an Image Basic OperationSelecting a Source Using the Remote ControlLift the front edge of the projector Projecting an Image Basic Operation VT676/VT670/VT575/VT470 ZoomFocus VT676/VT670/VT575/VT470Auto Keystone Correction Correcting Keystone DistortionManual Keystone Correction Press the Menu button to close the menu Adjusting the Image Using Auto Adjust Turning Up or Down VolumeOptimizing RGB Picture Automatically VT676/VT670/VT575/VT470 VT47After Use Turning off the ProjectorTo turn off the projector Preparation Make sure that the projector is turned offFreezing a Picture Turning off the Image and SoundEnlarging and Moving a Picture Using Remote Mouse Receiver VT676/VT670/VT470 only Using the Menus Using On-Screen MenuUsing On-Screen Menu Menu Elements Indicates the Cabinet Button Lock is enabledCOMPUTER2 List of Menu ItemsCurrent Signal All Data Using Picture Management Picture Management Using the Wall Color Correction Wall ColorMenu Descriptions & Functions Picture Selecting Base Setting Base Setting Using On-Screen Menu User Adjust when using UserSelecting Gamma Correction Mode Gamma Correction Adjusting White Balance Brightness RGB/Contrast RGBEnabling Auto Keystone Auto Keystone Menu Descriptions & Functions ImageCorrecting Vertical Keystone Distortion Manually Keystone Saving Vertical Keystone Correction Keystone SaveUsing Off Timer Off Timer Menu Descriptions & Functions SetupSelecting Lamp Mode Lamp Mode Enabling Key Sound and Error Sound Beep Using On-Screen Menu Selecting Menu Language LanguageSelecting Menu Color Menu Color Select Selecting Menu Display Time Menu Display TimeMenu Descriptions & Functions Advanced To enable the Security functionSecurity To disable the Security function Selecting Signal Format Signal Select Enabling High Speed Fan Mode Fan ModeAdjusting Position/Clock when Auto Adjust is off Setting Auto Adjust Auto AdjustTurning On Flicker Reduction Flicker Reduction Selecting Communication Speed Communication Speed Menu Descriptions & Functions InformationReturning to Factory Default Factory Default Menu Descriptions & Functions DefaultResetting the Filter Usage Hours Clear Filter Usage Clearing Lamp Hour Meter Clear Lamp Hour MeterTo clean the air-filter Cleaning or Replacing the FilterTo replace the filter sponge Maintenance Cleaning the Cabinet and the LensTo replace the lamp Replacing the LampInterlock Maintenance Indicator Messages TroubleshootingAppendix Problem Check These ItemsPower on process for the projector and the PC Optical SpecificationsElectrical VT575/VT47 2.1 1.2A VT676/VT670/VT470 2.7 1.4AMechanical VT676/VT670/VT575/VT470 Cabinet DimensionsAppendix VT47 Mini D-Sub 15 Pin Connector Pin Assignments of D-Sub Computer Input ConnectorPin No RGB Signal Analog YCbCr Signal SXGA+ Compatible Input Signal ListPC Control Codes VT676/VT670/VT575/VT470 PC Control Codes and Cable ConnectionPC Control Codes VT47 Cable ConnectionAppendix PC Control Connector DIN-8P Part Names and Functions of the Remote Control Optional Presentation Remote Control Kit PR52KITPackage List PJ OFF Mouse Slide Switch Volume +/- ButtonsPointer Button UP/DOWN ButtonsAppendix Battery Installation Using Remote Mouse Receiver Appendix Using the Laser PointerPower Troubleshooting Check ListVideo and Audio OtherSignal cable Installation environmentComputer Video equipmentTravelCare Guide TravelCare a service for international travelersAsia and Middle East Application Sheet for TravelCare Service Program Condition of your TravelCare Service Program