Epson R1390 Mainboard is the perfect replacement part for your Epson R1390 based DTF, UV or DTG printer. Do you hear a slight "beep....beep....beep" from the back of your printer when it is powered on? A new R1390 mainboard could likely repair the problem. Use the Epson R1390 Repair manual for replacement instructions & R1390 Adjustment Program to save & restore mainboard settings. Watch how to replace video.