1.The print effect of the new print head when used at first is a little worse than the used print head. And the old print head, especially specialized in printing white ink, we must pay attention to whether the passage of the print head is burned, the nozzle is blocked or not.
{{0 0} کله چې موږ ماشین ته ګورو، تاسو کولی شئ د UV چاپټر برخې مستقیم وګورئ ایا زوړ او نوی دی او نوی دی او نوی دی او نوی دی
3.Check whether the code of main board on the UV printer and the code on the print head are the same or not, the new machine's code is consistent.



