Why can't the keyboard be swiped?

- Sep 03, 2019-

The cause of the failure: the keyboard card reader cable is damaged, the card reader module is invalid, and the keyboard master IC program is lost or invalid;


Solution: Use the software exclusion method and the substitution method to check the relevant components in the following order;


1. Re-write the keyboard master IC definition program;


2. Replace the card reader cable;


3. Card reader module;


4, keyboard master IC;


Previous:Why is the external keyboard to POS machine not working? Next:The Benefits of Pos keyboard