On Windows
• Open Control Panel
• Devices and Printers (Change view to small icons to see this)
• right click the printer
• go to printer properties
• click print test page
On Mac
• Settings --> Printers and Scanners
• Select your Printer
• Click 'Open Printer Queue'
• at the top you have new menus on the Finder bar for your printer such as 'edit', 'printer', 'jobs', etc.
Select 'Printer', and choose 'Print Test Page'.