NEC LT75Z User Manual

Contents

NEC LT75Z User Manual Manual pdf 42 page image

E-36This section describes the simple maintenance procedures youshould follow to replace the lamp.Replacing the LampAfter your lamp has been operating for 1000 hours (1500 hours:Eco mode) or longer, the “Status” indicator in the cabinet willgo on and the message will appear. Even though the lampmay still be working, replace it at 1000 hours (1500 hours: Ecomode) to maintain optimal projector performance.CAUTION• DO NOT TOUCH THE LAMP immediately after it hasbeen used. It will be extremely hot. Turn the projectoroff, wait 90 seconds, and then disconnect the powercable. Allow at least one hour for the lamp to coolbefore handling.• DO NOT REMOVE ANY SCREWS except the lampcover screw and three lamp case screws. You couldreceive an electric shock.• The projector will turn off and go into stand by modeafter 1100 hours (1600 hours: Eco mode) of service.If this happens, be sure to replace the lamp. If youcontinue to use the lamp after 1000 hours (1500hours: Eco mode) of use, the lamp bulb may shatter,and pieces of glass may be scattered in the lampcase. Do not touch them as the pieces of glass maycause injury. If this happens, contact your NEC dealerfor lamp replacement.To replace the lamp:1 Loosen the lamp cover screw until the screwdriver goes intoa freewheeling condition and remove the lamp cover. Thelamp cover screw is not removable.4. MAINTENANCE2 Loosen the three screws securing the lamp housing untilthe screwdriver goes into a freewheeling condition. The threescrews 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 ofelectrical shock. Do not attempt to circumvent this interlock.Interlock4 Insert a new lamp housing until the lamp housing is pluggedinto the socket.CAUTION: Do not use a lamp other than the NEC re-placement lamp (LT51LP). Order this from your NECdealer.5 Secure it in place with the three screws.Be sure to tighten the screws.6 Reattach the lamp cover.7 Tighten 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 LampHour 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 toreset the lamp time clock to zero.