Canon PIXMA MG4200 Series On-Screen Manual page 543

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Driver) > Updating the Printer Driver
P040
Before Installing the Printer Driver
This section describes the items that you should check before installing the printer driver. You should also
refer to this section if the printer driver cannot be installed.
Checking the Personal Computer Settings
Terminate all running applications.
Log on as the computer administrator. The installer will prompt you to enter the name and password of
the administrative user. When multiple users are using Mac OS X, log on with the account of the
administrator who registered first.
Important
When you upgrade from Mac OS X 10.6 to Mac OS X 10.7, or Mac OS X 10.5.8 to Mac OS X 10.6, all
printer drivers that were installed will be deleted.
If you plan to continue using this machine, re-install the latest printer driver.
Related Topics
Obtaining the Latest Printer Driver
Installing the Printer Driver
> Printing with Application Software that You are Using (Printer
> Before Installing the Printer Driver
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