div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=english-manualpdf-j-21u-1600u-instruction-push-function-switch-to-usb-positionhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: english manualpdf · J-21u 1600U Instruction: Push FUNCTION SWITCH to USB position insert U disk or SD CARDU disk or SD CARD must with AUDIO file to corresponding socket it will loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer20220626005b5fb5437f8b9af90c8ddbb5html5thumbnails1jpg width=140 height=200 divdiv