How to clear waste tank full on DM300C, DM400C and more

Products affected: DM300C™, DM400C™, and DM475™
The Waste Tray Full, Ink Tank Full or similar message indicates your ink system has reached capacity. Your ink waste pad needs to be replaced. Your equipment may not operate until you clear your system error message.  Please contact customer support at 1-800-672-6937 for a waste tank replacement request, from 8 am to 8 pm Eastern Time.

Steps to Install the Ink Waste Tray:
Note: Ink may stain skin or permanently damage clothing. Gloves are included in the kit for your convenience.
  1. Remove your ink waste tray from the envelope and set both tray and envelope aside 
  2. Pull your ink drawer out from the right side of your meter - see image below.  Remove the ink waste tray.  
  3. Dispose of your used ink waste tray in the envelope that your new ink waste tray came in 
  4. Insert your new ink waste tray into your ink drawer and close the drawer 
  5. Press Menu
  6. Press Page Down 
  7. Select Maintenance 
  8. Select Replace Waste Tank 
  9. Select OK, I Understand 
  10. Select Yes, Tray is Replaced 
Ink Waste Tray
UPDATED:  May 29, 2018