Reset the lamp time when you have replaced the lamp. It provides an estimated timing for lamp replacement
Resetting the Lamp Time
TOPResetting the lamp time from the menu screen
Press the [MENU] button to display the menu
Select “Function” 
“Lamp Reset” from the menu
“Lamp Reset” from the menu
On the “Reset Lamp Time?” screen, select “Yes” and press the [OK] button
The lamp time is reset to zero.
Resetting the lamp time using the remote control
Insert the power plug into the power outlet
Make sure that you operate the remote control in the Standby mode (the power plug is inserted into the outlet, but the power is not turned on)
Press in the order as shown.
Make sure that you press a button within two seconds after the last button is pressed.
Press the last button for at least two seconds.
The “LAMP” indicator and “STANDBY/ON” indicator blink alternately for three seconds. After that, the unit switches to the Standby mode.
MEMO
Reset the lamp time only when you have replaced the lamp.
If the lamp time is reset while a lamp is in use, you may lose track of the timing for replacing the lamp. Doing so may result in using the lamp beyond the estimated limit, thereby causing lamp blowout.