Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
By and large, when I read your question and though about it, but before I saw 'service required', I though that if it really is producing a black vertical line like that, it probably has an electronic error that needs repair-servicing.
How old is the printer?
Does the line appear on every printout?
I presume you are printing photos - does the black line show up on the
File - Print Preview
preview windows view of how the document will look when printed? If so, it's a software problem (though I very much doubt that.)
Please describe the problem a little more so that I can perhaps offer more advice, more specifically appropriate to the particular problem. Use the Reply To Expert function to reply to me with that info. Thanks.