NEC VT37 Cleaning or Replacing the Filter, To clean the air-filter, To replace the filter sponge

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6. Maintenance

This section describes the simple maintenance procedures you should follow to clean the filter and replace the lamp.

￿Cleaning or Replacing the Filter

The air-filter sponge keeps dust and dirt from getting inside the projector and should be cleaned after every 100 hours of operation (more often in dusty conditions). If the filter is dirty or clogged, your projector may overheat.

CAUTION

Turn off the projector, turn off the main power switch and unplug the projector before replacing the filter.

Only clean the outside of the filter cover with a vacuum cleaner.

Do not attempt to operate the projector without the filter cover.

To clean the air-filter:

Vacuum the filter-through the filter cover.

SELECT

ZOOM

SCUO

F

To reset the filter usage time, from the menu, select [Default] → [Clear Filter Usage].

See also page 43 for resetting the filter usage time.

To replace the filter (sponge):

1. Remove the filter cover by pushing down on the catch of the cover until you feel it detach.

Catch

2. Gently peel off the filter (sponge) and replace it with the new one.

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Contents VT37 Safety Cautions PrecautionsDOC Compliance Notice for Canada only Place the projector in a horizontal position Important SafeguardsInstallation Important Information RF Interference for USA onlyIii Important Information Fire and Shock PrecautionsImportant Information Lamp Replacement Table of Contents Table of Contents Whats in the Box? IntroductionCongratulations on Your Purchase of The VT37 Projector Features youll enjoyIntroduction to the Projector IntroductionIntroduction Part Names of the Projector Front/TopRear Introduction Bottom Introduction Top Features Video Audio Input Jacks L/R RCA Introduction Terminal Panel FeaturesComputer in / Component Input Connector Mini D-Sub 15 Pin Video in Connector Mini DIN 4 PinPart Names of the Remote Control Freeze Button Aspect ButtonPicture Button Help ButtonIntroduction Battery Installation Remote Control PrecautionsOperating Range for Wireless Remote Control Selecting a Location Setting Up the Screen and the ProjectorDistance Chart Installation and Connections Throw Distance and Screen SizeReflecting the Image Installation and ConnectionsTo connect to a PC or Macintosh, simply Connecting Your PC or Macintosh ComputerMaking Connections Enabling the computer’s external displayTo connect Scart output RGB DVD player To make these connections, simply OMP 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 Focus Projecting an Image Basic Operation ZoomCorrecting Keystone Distortion Turning Up or Down Volume Adjusting the Image Using Auto AdjustOptimizing RGB Picture Automatically Preparation Make sure that the projector is turned off Turning off the ProjectorAfter Use To turn off the projectorTurning off the Image and Sound Freezing a PictureEnlarging and Moving a Picture Using the Menus Using On-Screen MenuUsing On-Screen Menu Menu Elements Indicates the Cabinet Button Lock is enabledList of Menu Items Current Signal All Data Using the Wall Color Correction Wall Color Using Picture Management Picture ManagementMenu Descriptions & Functions Picture Adjusting White Balance Brightness RGB/Contrast RGB Using On-Screen Menu User Adjust when using UserSelecting Base Setting Base Setting Selecting Gamma Correction Mode Gamma CorrectionSelecting Aspect Ratio Aspect Ratio Menu Descriptions & Functions ImageCorrecting Vertical Keystone Distortion Keystone Saving Vertical Keystone Correction Keystone SaveMenu Descriptions & Functions Setup Using Off Timer Off TimerSelecting Lamp Mode Lamp Mode Selecting Menu Display Time Menu Display Time Using On-Screen Menu Selecting Menu Language LanguageEnabling Key Sound and Error Sound Beep Selecting Menu Color Menu Color SelectTo enable the Security function Menu Descriptions & Functions AdvancedSecurity To disable the Security function Selecting Signal Format Signal Select Enabling High Speed Fan Mode Fan ModeSetting Auto Adjust Auto Adjust Adjusting Position/Clock when Auto Adjust is offTurning On Flicker Reduction Flicker Reduction Selecting Communication Speed Communication Speed Menu Descriptions & Functions InformationClearing Lamp Hour Meter Clear Lamp Hour Meter Menu Descriptions & Functions DefaultReturning to Factory Default Factory Default Resetting the Filter Usage Hours Clear Filter UsageCleaning or Replacing the Filter To clean the air-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 Specifications OpticalElectrical For Europe Appendix MechanicalCabinet Dimensions Pin Assignments of D-Sub Computer Input Connector Mini D-Sub 15 Pin ConnectorPin No RGB Signal Analog YCbCr Signal SXGA+ Compatible Input Signal ListCable Connection PC Control Connector DIN-8PPC Control Codes and Cable Connection PC Control CodesOptional Presentation Remote Control Kit PR52KIT Part Names and Functions of the Remote ControlPackage List UP/DOWN Buttons Volume +/- ButtonsPJ OFF Mouse Slide Switch Pointer ButtonAppendix Battery Installation Appendix Using the Laser Pointer When connecting using the USB terminal Appendix Using Remote Mouse ReceiverConnecting the remote mouse receiver to your computer When operating a computer via the remote mouse receiverOther Troubleshooting Check ListPower Video and AudioVideo equipment Installation environmentSignal cable ComputerTravelCare Guide TravelCare a service for international travelersAsia and Middle East Application Sheet for TravelCare Service Program Condition of your TravelCare Service Program