• ZD421 and ZD621 Desktop Printers User Guide
Cleaning the Sensor – Lower Half of the ZD421/ZD621 Printers
Cleaning the Sensor – Lower Half of the ZD421/ZD621 Printers

Cleaning the Sensor – Lower Half of the ZD421/ZD621 Printers

The lower half of all ZD621/ZD421 model printers are all cleaned the same way. Use this procedure to clean the sensor window.
  1. Clean the window of the movable sensor by gently brushing away dust or using a can of compressed air. If necessary, use a dry swab to brush away dust.
    1
    Movable sensor (black mark and lower web/gap)
  2. If adhesives or other contaminants remain, use a swab moistened with 99.7% pure isopropyl alcohol to break them up. Discard the used swab(s).
  3. Use a dry swab to remove any residue that may be left from the first cleaning.
  4. Repeat the preceding steps as required until all residue and streaks are removed from the sensor.