hi I got really problem on CiS. I have problem in one Cis that print 4" black vertical Line. so i did copy in long way potriat . after long time i got cis and change it. then the problem occur. all the 5 cis not working so i check all the cable the PUI board and all. please give some advice cause of lockdown i cannot get any items from aboard .. plz plz help me
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