BenQ PB6240 - XGA DLP Projector, Руководство пользователя

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Operation 35
Economic
Mode
Use this mode to reduce system noise and reduce power consumption by
20%. If this mode is activated, the light output will be reduced and result
in darker projected images.
Setting the projector in Economic mode does not extend the lamp
timer automatic shutdown feature. That is, the lamp time warning
message will still appear when the lamp has been in operation for
1980 hours. See
"Lamp information" on page 38 for details.