1. ZD421 and ZD621 Series Desktop Printers User Guide
  2. Color Touch Display and Controls
  3. System Menu
  4. System > Program Language > Diagnostic Mode
  • ZD421 and ZD621 Desktop Printers User Guide
System > Program Language > Diagnostic Mode

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, with the printer in Ready state, press
PAUSE
 +
FEED
  simultaneously and hold for two seconds.