NEC NP-PX750U User Manual - Page 190

7. Maintenance 3. Install a new lamp housing. (1)Insert a new lamp housing until the lamp housing is plugged into the socket. (2)Secure it in place with the three screws. • Be sure to tighten the screws. NOTE: • Be sure to install both Lamp 1 and Lamp 2. The projector will not turn on unless both the lamps are installed. Alignment hole Guide pin 4. Reattach the lamp cover. (1)Replace the lamp cover. (2)Tighten the two screws to secure the lamp cover. • Be sure to tighten the screws. Guide pipe Guide pin Frame Wire This completes the lamp replacement. Go on to the filter replacement. NOTE: When you continue to use the projector for another 100 hours after the lamp has reached the end of its life, both LAMP 1 and LAMP 2 indicators will light red and the projector cannot 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. When only one lamp is replaced, select [RESET] from the menu to reset the lamp hour used. Do not press the HELP button. 176