Canon PIXMA iX6850 - Manual (Page 264)

How to Restore the Printer's Network Settings to Factory Default
Important
• Note that initialization erases all network settings on the printer, and printing operation from a computer
over network may become impossible. To use the printer over network, perform setup according to the
instructions on our website.
Press and hold the RESUME/CANCEL button, then release the button when the POWER lamp flashes
white 9 times.
The network settings are initialized.
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