27EnglishManagementNote: "Constant Brightness" is available while both of "Dynamic Black"and "ECO Mode" are off.Note: You have to perform “Lamp Hour Reset” after replacing with newlamp; otherwise, "Constant Brightness" cannot be activated.Note: Functions vary depending on model definition.ECO Mode Choose "On" to dim the projector lamp which will lower powerconsumption, extend the lamp life and reduce noise. Choose "Off"to return normal mode.Constant Brightness Choose “On” to keep the brightness constant. Choose “Off” toreturn normal mode.High Altitude Choose "On" to turn on High Altitude mode. Operate the fans atfull speed continuously to allow for proper high altitude cooling ofthe projector.Turn Off Mode • Instant Off: Shuts down the projector without fan cooling.• Instant Resume: Resumes the system when the Power buttonis pressed again within 2 minutes.Auto Shutdown The projector will automatically shutdown when there is no signalinput after the allocated time. (default is 15 minutes)Lamp Hour Elapse Displays the lamp’s elapsed operating time (in hours).Lamp Reminding Activate this function to display a reminder to change the lamp 30hours before its expected end-of-life.Lamp Hour Reset Press the button and choose "Yes" to turn the lamp hourcounter to 0 hours.3D Dust Filter Replacement ReminderDefault of Replacement Reminder is "Off". Select "On" to activatefilter replacement reminder after installing 3D dust filter.PlaceChoose one of three places (indoor, outdoor, and Loess area) basedon actual environment. The default is "indoor".Filter HourShow the filter used hour information. When meeting max timebased on selected place, it will pop up a warning message to askfor replacing filter.Filter ResetPress the button and choose "Yes" to return the parameter tothe factory default after replacing new 3D dust filter.