ViewSonic PJD5353LS PJD5553Lws User Guide English - Page 40
Hiding the image, Locking control keys, Operating in a high altitude environment
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Hiding the image In order to draw the audience's full attention to the presenter, you can press Blank to hide the screen image. Press any key on the projector or remote control to restore the image. The word 'BLANK' appears at the lower right corner of the screen while the image is hidden. You can set the blank time in the SYSTEM SETTING: BASIC > Blank Timer menu to let the projector return the image automatically after a period of time when there is no action taken on the blank screen. Once Blank is pressed, the projector enters Economic mode automatically. CAUTION Do not block the projection lens from projecting as this could cause the blocking object to become heated and deformed or even cause a fire. Locking control keys With the control keys on the projector locked, you can prevent your projector settings from being changed accidentally (by children, for example). When the Panel Key Lock is on, no control keys on the projector will operate except Power. 1. Press (Panel Key Lock), or go to the SYSTEM SETTING: ADVANCED > Advanced > Panel Key Lock menu 2. Press / to select On. 3. A confirmation message is displayed. Select Yes to confirm. To release panel key lock, press and hold for 3 seconds. You can also use the remote control to enter the SYSTEM SETTING: ADVANCED > Advanced > Panel Key Lock menu and press / to select Off. Keys on the remote control are still functional when panel key lock is enabled. If you press Power to turn off the projector without disabling panel key lock, the projector will still be in locked status the next time it is turned on. Operating in a high altitude environment We recommend you use the High Altitude Mode when your environment is between 1500 m-3000 m above sea level, and temperature is between 5°C-25°C. CAUTION Do not use the High Altitude Mode if your altitude is between 0 m and 1500 m and temperature is between 5°C and 35°C. The projector will be over cooled, if you turn the mode on under such a condition. To activate the High Altitude Mode: 1. Open the OSD menu and go to the SYSTEM SETTING: ADVANCED > High Altitude Mode menu. 2. Press / to select On. A confirmation message is displayed. 3. Highlight Yes and press Enter. Notice We recommend you use the High Altitude mode by selecting it whenever your environment is higher than 1500 m. Do you want to turn High Altitude Mode ON? Yes No 33