Epson XP-400 User Manual page 173

1. Load a few sheets of plain paper in the product.
2. Press the home button, if necessary.
3. Press the left or right arrow buttons to select Setup and press the OK button.
4. Press the up or down arrow buttons to select Maintenance and press the OK button.
You see this screen:
5. Press the OK button.
6. Press the start button.
After the nozzle pattern prints, you see this screen:
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