Epson PowerLite 5000 Service Manual page 57

EPSON PowerLite 5000 Service Manual
Light source lamp
The standard lamp life is 2000 hours. If you notice reduced lamp brightness, replace the
lamp inner housing even if you have used the projector for less than 2000 hours.
The total running time of the light source lamp is written in the EEPROM (IC603:
ST24W04FM6TR) on the main board. If the lamp is nearing or has reached the end of its
life, IC600 (M37732S4BFP) outputs signals to control the following:
When the total running time has reached 1900 hours (1900~2000), the orange and red
lamp indicators blink alternately. The controller (IC600) on the main board counts the total
running hours and writes the data in IC603. The lamp runs only 100 hours after the orange
and the red lamp indicators start to blink alternately, so you should replace the lamp as
soon as possible. (If the lamp indicators blink alternately when you turn the projector on,
the lamp life is no more than 100 hours. Therefore, the lamp life may be suddenly
terminated.)
When the total running time has reached 2000 hours, the fuse in the lamp inner housing is
blown by the LFUSE signal from IC600 and the lamp is turned off, then the cooling down
operation starts (the orange lamp indicator blinks). Afterward, the lamp will not run until
you replace it with a new one.
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