
My printer no longer prints. As I check, the issue is within the cartridge ink flows to the ink tube. I know that this use gavity based ink feeding system to supply the ink to the sub tank. I illustrate my check and test in the attached email. For the K cartridge, the ink flows to the ink tube before the valve. But for other colors, C,M,Y, they are not flowing although ink cartridges have same full level of inks. Now, I tried testing by inserting the K cartrdige to C, M, Y, ink slot, the result is ink flows to the ink tubes. Now I suspect that the cartridge of C, M, Y are faulty or broken. May I know how it was broken or damaged. I physically inspect it nothing is broken on all sides, the pinhole where the ink needle is inserted looks to be good compared with the K (black) cartridge. How does the ink fromC, M, Y, cartridges does not flow in the ink tubes. How it was damage and can I repair it. It is only a plastic casing with pinhole where needle is injected once it is inserted in its slot. See my illustration of the issue below. Help please. Thanks.