Epson AcuLaser MX20DN series User Manual page 214

6. Insert the developer unit containing the toner cartridge slowly all the way in.
Note:
❏ If you cannot insert the developer unit all the way in, remove and insert the photoconductor unit,
then insert the developer unit again.
❏ Make sure that the locking lever for the pickup roller of the MP tray is in the locked position (up).
For the location of the locking lever and pickup roller, see "Inside the printer" on page 25.
If the locking lever is in the unlocked position (down), the pickup roller may have come off. In that
case, reinstall the pickup roller. For details, see "Installing the pickup roller" on page 35.
7. Close cover A.
Epson AcuLaser MX21/MX20 Series User's Guide
Troubleshooting 214