A:AnswerThe manual is a PDF file. What you downloaded is probably an installer for the accessory software and manuals. You need to “Run” it to install the manuals and utilities.
A:AnswerI have not used it for that but if you are talking about business checks that are on a sheet 8-1/2 x 11, I don't see why not. The paper feeds very smoothly in this printer and I have had no problems with printing address labels and t-shirt iron on transfer sheets.