I'm sorry about the issue. Is there any error or message?
Is this a new printer, or new computer, etc.?
Can you please click on the Apple logo / menu at the top, then click on About this Mac..., then tell me your OS X version, such as 10.6, 10.7, 10.8, 10.9, 10.10, 10.11, etc.?
Please reply at the box below. Thank you,
Please type at the box below, then click on the Send button below to communicate with me, so I can help. Thank you,