11Operation• Language: select the language of the OSD menu.• Transparency: adjust the menu screen transparency.• Blue screen: set on or off blue screen activation when no signal.• Panel lock: select ON to lock all buttons on the panel. Set OFF to unlock the buttons or press and hold any panel button for 5 seconds.• Health Remind: Switch the Health Remind on or off. While Health Remind is set to On, a prompt picture will remind you to have a break at intervals of two hours.• Reset: reset the parameters to initial factory settings.USB operationBackground information• This unit supports playback of video files with 3GP, ASF, AVI, MKV, MPG, DAT, M2TS, MP4, TS, VOB extension, with video codecs WMV V9, DIVX, H263, MPEG-4, MPEGII, XVID and audio codecs PCM, WAV, WMA, MP3, DD(AC3). Video image resolution should not be more than 1280x720. The above list of extensions and codecs is for information only and is not a guarantee that all files having the above extensions and codecs sohuld be read by this unit.• USB file systems supported: NTFS, FAT16, FAT32. 2.0 USB version is supported, maximum capacity is 500 Gb. Max. load: DC5V, 500 mA. For correct and satisfactory operation, licensed USB devices of famous brands should be used with this unit. Avoid using USB devices of unknown brands. Playback of some file formates cannot be supported.According to the USB 1.1/2.0 Standard, usage of a USB device with power current consumption exceeding 500 mA is not recommended without supplementary power supply. Failure to use supplementary power for connected USB drives with power consumption exceeding this value as well as defective USB drives may cause mechanical or thermal changes of elements of this unit as well as failure of internal elements of the USB port. Such damages are not warrantee cases.Warning: usage of external USB drives containing BIN files in the root directory may cause malfunction of the unit or damage to the software.Operations of file playback• Insert a USB into the USB jack. Select USB source and press ENTER button on the RC or VOL+/VOL- button on the unit. The screen will show a USB playback window, in which you can select Music, Photo, Movie and Text contents to play by pressing LEFT/RIGHT cursor buttons and ENTER button.• Press cursor buttons to select Return option and press ENTER button on the RC or CH+/CH- button on the unit if you want to go back to the previous menu.• In the content menu, press cursor buttons to select folder, press ENTER button on the RC or press and hold CH+/CH- button on the unit to enter it, then press cursor buttons to select the file you want to watch or to listen to. When highlighting the file, the file information will appear on the right and picture will be previewed in the center (not available for music files). Press button on the RC or press and hold CH+/CH- button on the unit to play the selected file.• While playback, press INFO button; the bottom of the screen will show playback menu in which you can select an operation by LEFT/RIGHT cursor buttons on the RC or perform this operation by pressing ENTER button on the RC.• While playback, press button to pause or resume playback. Press button to stop playback.• When you select a file to play, you can delete the selected file by pressing Red button, then ENTER on the RC.• When playing photo, movie and music files, you can press REPEAT button to select