Toshiba doesn’t include instructions in the projector manual to reset the lamp timer. Instead, they include the instructions with the lamp. That’s fine, unless you buy a generic lamp. And until you reset the lamp timer you will be shown a message every time you turn on the projector warning you that your lamp has reached the end of its life.

On these projectors, the lamp is good for 2000 hours. When the bulb burns out it can explode so it is worth replacing the bulb before it blows. Glass shards and mercury used in the bulbs confirms this.

Here are the instructions:
1. Unplug the power cord from the electrical outlet.
2. Turn the main power switch to the “On” position.
3. Press and hold the “On/Standby,” “Menu” and “Keystone” buttons at the same time. The buttons are on the projector. (The same buttons are on the remote but the reset only works if you use the buttons on the projector.)
4. Plug the power cord back into the outlet while holding the buttons in Step 3. The lamp timer will be reset when the projector receives power.