10SD/MMC card slot, for Multimedia playback files only. Insert a SD/MMC CARD into this slot andthe unit will automatically start reading and playback the card. * Supported Music File Format:MP3, WMA Files.REMOTE CONTROL1. MODE buttonPress it to select the mode: Radio, DISC (if there is a disc in unit), USB (if there is a USBdevice in the unit), CARD (if there is a SD/MMC card in the unit), Bluetooth (For TID-893B) andAV IN.2. POWERpower on or off3. BAND/ RDM/ClearIn Radio mode, press to change radio band in sequence of FM1→ FM2 → FM3 → AM1 →AM2 .In DVD mode, press to play randomly .In Bluetooth mode ,press briefly it to clear singlewrong number .long press it to clear all the wrong number.4. ENTER buttonPress it to confirm selection or setting.5: Cursor / / / buttonsUse the / / / buttons to select the menu item. the title, track or to show next frame.6. EJECT buttonPress it to eject the disc.7.STEREO/MONO/*Press STEREO button to select STEREO or MONO.In BLUETOOTH mode, press it to make a * symbol.8.P.SCN/ RPT /#1: MODE2: POWER3: BAND/RANDOM/Clear4: ENTER5: UP/DOWN/LEFT/RIGHT6: EJECT7: STEREO/MONO/*8: P.SCN/RPT/#9: BACKWARD/SEEK-FAST BACKWARD10:LOUD11: OSD12: PBC/STOP13: Digit numbers14: Play/Pause15: Mute/Bluetooth16: MENU17: SUBTITLE18: SETUP19: ANGLE/Accept20: INT/Eject21: VOLUME PLUS22: A-B/ZOOM23: SEL24: FORWARD/SEEK+FAST FORWARD25: VOLUME MINUS26: AUDIO/GOTO27: DUAL28:OPEN/TILT