(1) zero dividing error

    · the cpu has detected a zero dividing error. (the program is not running normally.)

    (2) undefined command fetch error

    · the cpu has fetched an undefined command. (the program is not running normally.)

    (3) momentary power interruption error

    · a momentary power interruption has occurred.

    * at the moment when an error occurs, the printer shows the error message and makes status response before stopping. (none of the commands and key operations will be processed.)

    (4) eeprom error

    · the eeprom for back-up cannot be read/written properly.