There are three potential solutions to fix the Automatic Print Head Alignment.
Take appropriate action
To get started, tap OK on the touch screen to dismiss the error, then try the 3 solutions below:
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Adjust your operating environment and/or the position of the printer so that the paper output slot is not exposed directly to strong light.
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Print the nozzle check pattern on the MG7520 or MG7720 to check the status of the print head.
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Load one sheet of A4 Letter-sized plain paper and perform Automatic Print Head Alignment again.
If the problem continues after aligning the print head again, tap OK on the touch screen to dismiss the error, and then perform Manual Print Head Alignment.
Get a full list of support codes for the MG7520 or MG7720.
If your product issue isn't resolved after following the steps above, or if you require additional help, please create or log in to your Canon Account to see your additional options.