1. ZD421 and ZD621 Series Desktop Printers User Guide
  2. Tools
  3. Activating Advanced Mode
  4. Factory Test Modes
  • ZD421 and ZD621 Desktop Printers User Guide
Factory Test Modes

Factory Test Modes

When placed in these modes, the printer begins printing various test patterns which you can use to evaluate printer performance.
Your printer supports two print print modes which are intended for factory tests.
These test modes consume a quite a bit of media.
Test mode 1
To initiate this mode, hold
PAUSE
 () as you turning printer power ON .
Test mode 2
To initiate this mode, hold
PAUSE
 (),
FEED
  (), and
CANCEL
 () simultaneously for two seconds with printer power ON.
To exit either mode, press and hold
POWER
 down while switching printer power OFF. Release the button when the printer has fully powered down.