My printer has an error and do not know how to fix it. It is an "HP Envy Pro 6400 series" probably 2 years old and the error message I am getting is "(Cartridge Carriage Stalled). Check for a paperjam or other obstruction". There is no jammed paper inside I just dont know what the issue is. A yellow light flashes indicating there is a problem but there is no definitive reason.
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