How to solve the alarm problem of Imaje 9232/9410/ 9450 inkjet printer?

It will report a lot of warnings, such as the power failure of the nozzle, and a series of failures such as the high ink level detected by the solvent,

If the power is turned on and the screen only shows when the pump is not running, so many warnings will be given:

In general, there may be a problem with the board on this side of the nozzle: