Epson WorkForce Pro WF-C8690 A3 Color MFP with PCL/PostScript - Manual (Page 353)

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Print Head Nozzle Check
You can print a nozzle check pattern to check for clogged nozzles.
Checking the Nozzles Using the Product Control Panel
Checking the Nozzles Using a Computer Utility
Parent topic: Print Head Maintenance
Checking the Nozzles Using the Product Control Panel
You can check the print head nozzles using the control panel on your product.
1. Make sure there are no errors on the LCD screen.
2. Load a few sheets of plain paper in the product.
3. Press the home button, if necessary.
4. Select Settings .
5. Select Maintenance .
You see a screen like this:
6. Select Print Head Nozzle Check .