SATO CL4NX Operator's Manual page 715

Error Message 1014 (USB Memory Full)
When there is an error with the printer, the error message appears on the screen.
Check the cause and countermeasure, and then take appropriate action.
To clear the error:
Connect the USB memory with sufficient space, or press the
button.
Cause and Countermeasure
Cause
The space in the USB memory is not sufficient.
Countermeasure
Delete unwanted data from the USB memory.
Contact your SATO technical support center if the error cannot be resolved.
Contact Information for When You Are in Trouble
button (OFFLINE) or
715