102 > B401/B411/B431
2. Adjust the paper guides to the width of the paper.
3. Insert a sheet of Letter/A4 plain paper between the paper
guides and push the colored set button to engage the tray.
4. Press the Menu ▲ or ▼ button repeatedly until
MAINTENANCE MENU is displayed, then press the OK button.
5. Press the ▲ or ▼ button until CLEANING PRINT is
displayed.