Hello, I'll be assisting you today.
Usually what happens is the print head becomes clogged and needs to be cleaned.Your printer will have a clean print head maintenance tool that can be ran to clean the print head to clean the clogged print head. Sometimes running this tool 3-4 times will fix the issue. If not, then the print head is too clogged and a replacement print head will be needed.Let me know if you need the exact instructions to run the clean print head maintenance tool.
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Follow the steps on this page: