How to replace developer on Ricoh 301

How to replace developer on Ricoh 301
Replacing the developer in a Ricoh 301 copier is an important maintenance task that helps ensure the quality and consistency of printed copies. Here are the steps to replace the developer on a Ricoh 301 copier:
Turn off the Ricoh 301 copier and unplug it from the power source.
Open the front cover of the copier and remove the toner cartridge.
Locate the developer unit, which is the long black plastic container inside the copier.
Carefully pull the developer unit out of the copier.
Remove the top cover of the developer unit and empty the old developer out of the container.
Use a vacuum cleaner to remove any remaining developer residue from the container and the unit.
Pour in the new developer, making sure to fill the container evenly and avoiding any clumps.
Replace the top cover of the developer unit and reinstall the unit into the copier.
Reinstall the toner cartridge and close the front cover of the copier.
Plug the copier back in and turn it on. Run a test print to ensure that the new developer is functioning properly.
Reasons to replace the developer:
Over time, the developer in a copier can become worn out or contaminated, which can result in poor print quality, such as streaks, lines, or smudges on printed copies. Replacing the developer helps to maintain the performance and lifespan of the copier and ensures that prints are of high quality. Failing to replace the developer can lead to more serious problems with the copier and may require more expensive repairs or replacement.

[@leonardopino4082]

What type of developer are you putting in the pdcu? Ricoh? ... Type? ... alternative?