| 摘要 |
A video projector including replaceable light source lamps, a case that accommodates the light source lamps, lamp covers respectively corresponding to the light source lamps, a time measurement unit that measures an accumulated illumination time of each of the light source lamps, a control unit that determines whether or not the measured accumulated illumination time is greater than a replacement determination time, and notification units respectively corresponding to the light sources. Each notification unit is illuminated, when it is determined that the accumulated illumination time of the corresponding light source lamp is greater than the replacement determination time, to indicate where the corresponding lamp cover is located.
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