Please checking the chip bounding pad, remove the chip and reinstall it if the bounding pad is not the same with the fig1
Clean the conductive pole on the conductive side of the cartridge.
Fix the electrical contact spring if we find the spring is distorted.
Please checking the chip bounding pad, remove the chip and reinstall it if the bounding pad is not the same with the fig1
Clean the conductive pole on the conductive side of the cartridge.
Fix the electrical contact spring if we find the spring is distorted.