
Message will come on screen when you exceed the 750 hours, directing you to replace the lamp. Lamp replacement only by qualified service personnel. Impression A10 1200 2500 Hours Press the Menu Button, then choose Help, then About. Press the Menu Button, choose Options, then choose Service, then Reset Lamp Timer. Impression A2 650 2500 Hours Press the Menu Button, then choose Help, then About. Press the Menu Button, choose Options, then choose Service, then Reset Lamp Timer. Impression A4 500