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Asked on Super User by Spencer Rugaber, 2 years ago. No reply there for at least a week.

HP printer not printing

I am running macOS 10.15 Catalina and have a DeskJet 6940 printer that has stopped working. I can successfully send a job to the printer. It successfully runs through the printer, positioning the cartridge, starting and stopping the paper feed as expected. Nothing shows up on the paper (no smudges or marks of any kind). The problem occurs for both color and B/W jobs. I have tried both old and new cartridges. I am running macOS, and I tried from various MacBooks. I have not touched the printer driver. It feels like something simple, but I have tried everything I can think of (power cycling, dif

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Wireless printer discoverable, but printing fails

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Question by Spencer Rugaber on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.