These directions assumes you are going to replace the lamp, so I don't know if powering down the TV first signals a microprocessor this was done. Press the POWER button to turn off the TV. Listen and wait until the cooling fan stops. Unplug the power cord. You would then replace the lamp at this point.
1. Plug the power cord back into the properly grounded wall outlet. Then press the POWER button on the projection display or the remote control to turn the power on.
2. While pressing the VOL- button on the projection display, hold down the PIP or SPLIT button on the remote control simultaneosly for more than 5 seconds.
3. Whe the lamp time reset procedure is complete, the screen will display "LAMP TIME WAS RESET TO 0." When the lamp time is reset, the LAMP indicator will go out.