Change the view area

You can bring a different area of the artboard into view by doing any of the following:

Choose View > Actual Size to see all of your artboards in actual size.
Choose View > Fit In Window to zoom out so that all artboards are visible in on the screen.
In the Navigator panel, click the area of the thumbnail display that you want to view in the illustration window. Alternatively, drag the proxy view area (the colored box) to a different area of the thumbnail display.
Select the Hand tool , and drag in the direction you want the artwork to move.
To specify the quality of the display when using the Hand tool, choose Edit > Preferences > Units & Display Performance (Windows) or Illustrator > Preferences > Units & Display Performance (Mac OS). Drag the Hand Tool slider left to improve the quality of the view when you move it with the Hand tool, or right to improve the speed at which you can move the view with the Hand tool.