Cleaning the print head on the DM50-DM60

Products affected:
DM50/DM55 (K721, K724)
DM60 (K722)
Follow these steps to clean your print head and run the maintenance function on your meter. Doing this can improve your print quality.
  1. Lift and replace the cover.
  2. When the message, "Do you want to install new ink?" is displayed, press Enter/Yes.
  3. Re-open the cover and wait until the ink assembly moves to the front of the machine.
  4. Press the lock button on the green ink cartridge cover to release and remove the ink cartridge, then set the ink cartridge aside.
  5. Squeeze the latches holding the print head cover in place and lift the print head cover.
  6. Lift the print head out of the machine.
  7. Gently clean the print head with a soft, lint-free cloth.
  8. Put the print head back into the machine.
  9. Close the print head cover, making sure it clicks into place.
  10. Replace the ink cartridge, making sure the circle on the bottom of the cartridge faces you.
  11. Close the ink cartridge cover, making sure it clicks into place.
  12. When the message "IMPORTANT: Is ink installed?" is displayed, press Enter/Yes.
  13. When the message, "is test pattern OK?" is displayed, do one of the following:
  • If the test pattern is good (contains no broken lines or smeared ink), press Enter/Yes.
​​Example of good test pattern:
User-added image
Example of bad test pattern:
User-added image
  • If the test pattern is not good, run the maintenance function:
  1. Press the down arrow key to "Clean Printer Nozzles?"
  2. After the meter cleans the printer nozzles, follow the prompts to run another test pattern. You can run this function up to three times to improve poor print quality.
If your printing issue persists after you have wiped down your print head and cleaned your printer nozzles, you may need to replace the print head.  To do this, contact Technical Support and quote this article number. Please have your Meter type ("PCN") and Serial Number ("Meter #") ready, these can be located on a white sticker at the back of the meter.
UPDATED:  28 October 2019