Macintosh

Determine if there is any problem with the document file

If unknown characters and letters are printed only for a specific document file, then the problem may exist within that file, or the software application that you are using. In this case, try typing the same text in a newly created file, and if the new document prints normally then the problem exists in the original document file. If the same problem occurs with the new file, call for service.

Macintosh

Determine if the printer driver has been installed properly

There may be a problem with the printer driver. Uninstall it and install the printer driver again.

The problem may exist within the printer driver. Uninstall the printer driver and reinstall it. For details about uninstalling the printer driver, refer to the Macintosh Printer Driver Guide. For details about installing the printer driver, see Getting Started.

Macintosh

Determine if any special extension files or control panel options are in use

The printer driver could conflict with a non-Apple generated file extension or a control panel option. Use the Extensions Manager to change the configuration to eliminate any conflicts.

142Chapter 6 Troubleshooting

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Canon BJC-55 user manual Determine if there is any problem with the document file