NEC LT75Z Maintenance, Replacing the Lamp, To replace the lamp, Be sure to tighten the screws

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4. MAINTENANCE

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

4Insert a new lamp housing until the lamp housing is plugged into the socket.

Replacing the Lamp

After your lamp has been operating for 1000 hours (1500 hours: Eco mode) or longer, the “Status” indicator in the cabinet will go on and the message will appear. Even though the lamp may still be working, replace it at 1000 hours (1500 hours: Eco mode) to maintain optimal projector performance.

CAUTION

DO NOT TOUCH THE LAMP immediately after it has been used. It will be extremely hot.Turn the projector off, wait 90 seconds, and then disconnect the power cable. Allow at least one hour for the lamp to cool before handling.

DO NOT REMOVE ANY SCREWS except the lamp cover screw and three lamp case screws. You could receive an electric shock.

The projector will turn off and go into stand by mode after 1100 hours (1600 hours: Eco mode) of service. If this happens, be sure to replace the lamp. If you continue to use the lamp after 1000 hours (1500 hours: Eco mode) of use, the lamp bulb may shatter, and pieces of glass may be scattered in the lamp case. Do not touch them as the pieces of glass may cause injury. If this happens, contact your NEC dealer for lamp replacement.

To replace the lamp:

1Loosen the lamp cover screw until the screwdriver goes into a freewheeling condition and remove the lamp cover. The lamp cover screw is not removable.

2Loosen the three screws securing the lamp housing until the screwdriver goes into a freewheeling condition.The three screws are not removable.

3 Remove the lamp housing by pulling out the handle.

NOTE: There is an interlock on this case to prevent the risk of electrical shock. Do not attempt to circumvent this interlock.

Interlock

CAUTION: Do not use a lamp other than the NEC re- placement lamp (LT51LP). Order this from your NEC dealer.

5Secure it in place with the three screws.

Be sure to tighten the screws.

6 Reattach the lamp cover.

7Tighten the lamp cover screw.

Be sure to tighten the screw.

8 After you install a new lamp, select the [Advanced Menu] [Projector Options] [Setup] [Page 4] [Clear Lamp Hour Meter] to reset the lamp usage hours.

If the projector will not be turned on after using 1100 hours (1600 houres: Eco mode)of service, press and hold the [Help] button on the remote control for ten seconds or longer to reset the lamp time clock to zero.

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Contents LT75Z RF Interference PrecautionsImportant Information DOC Compliance NoticePower Supply Important SafeguardsInstallation CleaningFire and Shock Precautions Lamp ReplacementDo not place any liquids on top of your projector Table of Contents Introduction to the LT75Z Projector Features you’ll enjoyIntroduction Getting StartedWhats in the Box? NEC LT75Z ProjectorFront/Side Features Getting to Know Your LT75Z ProjectorRear/Side Features BottomTop Features Terminal Panel Features Remote Control Features Remote Control Precautions Remote Control Battery InstallationOperating Range Selecting a Location InstallationSetting up Your Projector Screen and Projection DistanceDistance Chart Reflecting the ImageMacintosh Wiring DiagramVCR, DVD Player or IBM VGA or CompatiblesConnecting Your PC or Macintosh Computer Macintosh Desktop typeConnecting Your DVD Player AudioConnecting Your VCR or Laser Disc Player VideoAbout Startup screen Menu Language Select screenConnecting the Power Cable and Turn on the Projector OperationAdjusting the Image Size and the Focus Adjusting the Image Using Auto Adjust Up downUsing the Menus Enlarging and Moving a PictureSub Menu Menu TreeBasic/Advanced Menu ItemsMenu Elements Solid triangle Slide berSource Select VolumeMenu Descriptions & Functions PictureAdvanced Options Advanced mode Lamp ModeAspect Ratio Video Filter when Auto Adjust is off Position/ Clock when Auto Adjust is offResolution when Auto Adjust is off Factory DefaultColor Management Gamma Correction Advanced modeWhite Balance Advanced mode Projector Options Setup Signal SelectPhase manually To lock the cabinet buttons InformationTo unlock the cabinet buttons To replace the lamp MaintenanceReplacing the Lamp Be sure to tighten the screwsPower/Status Light Messages TroubleshootingCommon Problems & Solutions Optical SpecificationsModel Number ElectricalCabinet Dimensions Mini D-Sub 15 Pin Connector Sub Pin AssignmentsCompatible Input Signal List Cable Connection PC Control Connector DIN-8PPC Control Codes Function Code Data