1. ZD421 and ZD621 Series Desktop Printers User Guide
  2. Maintenance
  3. Cleaning
  4. Cleaning the Sensor
  5. Cleaning the Sensor – Upper Half of ZD421/ZD621 Direct Thermal Printers
  • ZD421 and ZD621 Desktop Printers User Guide
Cleaning the Sensor – Upper Half of ZD421/ZD621 Direct Thermal Printers

Cleaning the Sensor – Upper Half of ZD421/ZD621 Direct Thermal Printers

  1. Spray the upper web (gap) array sensor below the printhead with a can of compressed air. If necessary, use a swab moistened with 99.7% pure isopropyl alcohol to break up adhesive or other non-dust contaminants.
  2. Discard the used swab.
  3. Use a clean dry swab to remove any residue that may be left from the first cleaning.