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The switching between the 2 modes can only be done 6 times and this only during the first 100 hours of the lamp lifetime (considering a dual lamp mode i.e. both lamps are used). Lamps replacement 1000Runtime (hours) Power Mode Switching 1500 (Full power mode) Power Mode Switching possible (max 6 times ! ) possible (max 6 times ! ) or 3000 (econmy mode) Image 10-5 Lamp power mode (projector considered to be running in dual lamp mode i.e. with both lamps on) Above considerations and numbers (lifet