826. Maintenance5. Connect the supplied power cord, and turn on the projector.6. Finally, select the menu → [RESET] → [CLEAR LAMP HOURS] to reset the lamp usage hours.NOTE: When you continue to use the projector for another 100 hours after the lamp has reached the end of its life, the projectorcannot turn on and the menu is not displayed.If this happens, press the HELP button on the remote control for 10 seconds to reset the lamp clock back to zero.When the lamp time clock is reset to zero, the LAMP indicator goes out.4. Reattach the lamp cover.(1) Slide the lamp cover back until it snaps into place.(2) Tighten the screw to secure the lamp cover.• Be sure to tighten the screw.3. Install a new lamp housing.(1) Insert a new lamp housing until the lamp housing is plugged into the socket.CAUTIONDo not use a lamp other than the NEC replacement lamp NP18LP(V300X)/NP13LP(V260X/V230X/V260/V230).Order this from your NEC dealer.(2) Push the top center of the lamp housing to secure it.(3) Secure it in place with the three screws.• Be sure to tighten the screws.Hold the cabinet with your hand to keep it from tilting while you tighten the screw.