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if that doesn't help

this may work for various Canon Pixma printers, but it is not guaranteed.
It may be necessary to vary the placement slightly when taping the chip contacts.

See the comments in the second video.

Many thanks to the creators of these videos. You are making this world a little bit better!

MP640 / MP648 Service Manual

Canon PIXMA MP640 Series Photo All-In-One Getting Started Guide

Canon PIXMA MP990 / MP640 / MP560 Windows Network Setup Guide

Canon PIXMA MP990/MP640/MP560 Network Reconfiguration Guide

Canon PIXMA MP990 / MP640 / MP560 — Installation réseau sous Windows

Sandro Torchella

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