Similar – yet puzzlingly different from this question:
This PDF displays with question marks instead of letters
My case shows up fine on the screen, but prints with question marks in boxes (as seen, evidently on screen, in the question linked to.) Even the usually effective trick of saving to (another) pdf from the print dialog and then printing that looks fine on screen and still prints question-marks in boxes…
Best Answer
My guess is there's an issue with the character encoding in the document. Unless you're up to playing with OCR (optical character recognition), try the following: