Fixing Unit Error If a fixing unit error is displayed, you need to request service . Follow the procedure below, and then contact your local authorized Canon dealer or Canon's Contact Center at 1-800-OK-Canon to request service. 1. Turn the printer off, then disconnect the cables from the printer.
This error may also appear as the similarly worded "App Name" can't be opened because it was not downloaded from the Mac App Store." depending on the security settings on your computer. A sample of the error is shown below: