ViewSonic LS700-4K User Guide - Page 38

Light Source Mode Light Source Mode Sets the light Source Mode. • Normal: 100% of the light source power • Eco: 80% of the light source power Light Source Hours Display the duration that the light source has been running for (hours). Operations at high altitudes We recommend using the High Altitude Mode when the environment is at 1,500 to 3,000 meters above sea level and the temperature is between 5°C to 25°C. Note Do not activate High Altitude Mode if the environment is at 0 to 1,500 meters above sea level and the temperature is between 5°C to 35°C. Activating High Altitude Mode under such circumstances will lead to excessive cooling of the projector. Activating High Altitude Mode: 1. Open the OSD menu and enter Advanced Settings > High Altitude Mode menu. 2. The confirmation message will be shown, then press / to select Yes. 3. Press [Enter]. There is a chance that louder operational noises will be generated when using the projector in High Altitude Mode. The reason for this is the increased fan speed necessary to improve overall system cooling and performance. Using this projector under extreme environments that exceed the aforementioned limits may lead to auto-shutdown designed to prevent overheating of the projector. Under such circumstances, you should switch to High Altitude Mode to solve these issues. However, this does not mean that this projector is able to operate under any and all harsh or extreme conditions. Hiding the image In order to draw the audience's attention to the presenter, you may press [Blank] to hide the screen image. Press any key on the projector or remote to restore the image. After hiding the image, the lower right corner of the screen will display the text [Blank]. Press the [Blank] key on the remote control, the projector will enter the power-saving mode automatically. Caution Do not block the projector lens. The blocking item may be heated to the point of deformation or may even cause a fire. 31