System
Program Language
Diagnostic Mode

Use Communications Diagnostics Mode to enable the printer to output all communication as printed data for advanced troubleshooting.

Accepted values:: Print, E:Drive, USB Host, Off
Related ZPL command(s):: For Print Diagnostics only:
~JD
to enable,
~JE
to disable
Print Server web page:: View and Modify Printer Settings
General Setup
Language
Control panel key(s):: For Print Diagnostics only: Hold PAUSE + FEED for 2 seconds when the printer is in the Ready state.