rodoftex,
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Cleaning the Printhead on Dell AIO V313w, V515w, V715w, P513w, and P713W Printers
and
Troubleshooting Printhead Problems on the Dell AIO V313w, V515w, V715w, P513w, and P713W Printers
The Printer Does Not Recognize the Ink Cartridge or Only Prints in One Color
And here is a Replacement Printhead if needed.
Rick