Hi guys, I have a Mitsubishi Diamond 3000LS. Recently I have realized that the Contol Panel unit where operator is always working on for colour setting has encounter different unit of colour (C,M,Y,K) of ink key flashing and flashing. They had wash the ink key blades thoroughly and so on. Problem eases at first, but still, back to square one again. Hope you guys can advice on this. Is it ink key motor problem? potentio meter? ink key circuit board? oh gosh.. please help..