The LCD of the pocket memo digital dictation recorder (DPM) displays an "Error 301" message. What does that mean?

If the memory card is formatted with any other format than FAT 16 and inserted to the pocket memo digital dictation recorder (DPM), then the "! 301" error will be displayed.

Format the memory card with the DPM menu "Format memory" before using the device again.

Note: It is recommended to only format the memory card inside the DPM, to prevent such issues.