1. ZD421 and ZD621 Series Desktop Printers User Guide
  2. Tools
  3. Printer Diagnostics
  4. Power-On Self Test
  • ZD421 and ZD621 Desktop Printers User Guide
Power-On Self Test

Power-On Self Test

The printer performs a Power-On Self Test (POST) each time printer power is turned ON.
During the Power-On Self Test, the control panel indicators turn on and off as the printer ensures readiness to operate and handle print jobs.
At the end of this self test, only the STATUS indicator remains lit.