271. Remove the fuse holder on the backof this unit using a screw driver.2. Remove the blown fuse andreplace it with a spare one.3. Replace the fuse holder.Replacing fuseFuse in useSpareThe presenter doesnot respond to theremote control.• Check the batteries in the remotecontrol. If they are used up, replacewith new ones. See page 6 to installthe batteries.• Remove the batteries from the remotecontrol if it will not be used for a monthor more. This will help prevent possibledamage from battery leakage. Ifleakage occurs, wipe up the liquidinside the compartment and replacethe batteries with new ones.Head lamp doesnot light up assoon as the LAMPbutton is pressed.• Built-in protection circuitry is activatedto protect the lamp circuit. It's normal.