Pro 9000 head removal

PeterBJ

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I have also had a few Canon chips go bad. It is a rare occurrence, but it seems Canon chips can go bad for no apparent reason. See this.

I think possible causes for chip malfunction are dirty chips, dirty or misaligned chip contact springs in the print head carriage, and a failing resetter. If your resetter is battery powered, maybe the battery/ies should be changed.

To avoid ink getting onto the chips and causing problems, it is a good idea to reset before you refill.
 
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