Canon MP830 - PIXMA Color Inkjet Service Manual page 21

<Communication test between Canon machines>
Conduct the 3-point communication shown in the diagram.
Test flowchart of communication test between Canon machines:
<Communication test with a non-Canon machine>
Ask a non-Canon machine user to request servicing, and conduct the 4-point communication test shown below.
Test flowchart of communication test with a non-Canon machine:
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