How to deal with ink and charging problems in the charging tank of the Domino A200 inkjet printer

We'll start by checking the charging tank, which has ink on it, and we'll mainly see if there's any ink in this gap:

If there is black ink, we will wash it clean with cleaning liquid, wash it clean and blow dry it:

Charging failure, generally is the ink point split is not good. We click on the "print head" and then look at the "ink point separation time", we can see that if the ink point is normal split, ink point split time is there, small character printer is generally more than 3,000, the lowest is 3000.

If there is no ink point split time, we can adjust the modulation voltage, turn it up a bit, let it become more than 3,000, it will not report charging failure.