NEC PA622U User Manual page 194

3. Install a new lamp housing.
(1)Insert a new lamp housing until the lamp housing is plugged into the socket.
(2)Position so that the guide hole in the bottom right of the lamp house is over the protrusion on the projector then
press all the way in.
(3)Secure it in place with the two screws.
• Be sure to tighten the screws.
4. Reattach the lamp cover.
(1)Insert the top edge of the lamp cover into the groove in the projector and close the lamp cover.
(2)Tighten the screw to secure the lamp cover.
• Be sure to tighten the screw.
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, 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.
• For portrait projection, the power supply will be switched off when the lamp replacement time (estimated)* is reached. A lamp
replacement message will be displayed 100 hours before the lamp replacement time is reached.
* The replacement time is not guaranteed.
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7. Maintenance