1. Avoid nicking or scratching the development roller.
  2. Place a development unit on a sheet of paper after removing it.
  3. Always clean the drive gears after removing used developer.
  4. Always dispose of used developer in accordance with local regulations.
  5. Never load any type of developer or toner into the development unit other than those specified for this machine. Doing so will cause poor print quality and toner scattering.
  6. Immediately after replacing the developer, be sure to execute the SPs to initialize the developer/toner.
  7. Never do SP3030 with used developer.
  8. When using a vacuum cleaner to clean the development unit casing, always ground the casing with your fingers to avoid damaging the toner density sensor with static electricity.
  9. The TD sensor must be initialized:
    • After replacing developer. (Initialize the TD sensor only for the PCU where the developer was replaced.)
    • Never initialize the TD sensor more than once. Initializing the TD sensor more than once can cause toner scattering inside the machine.