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    Canon MP540 - PGBK doesn't print anything

    Ok, so I took apart the printer and managed to inspect the purge unit. I didn't remove it, as it seemed, that lot of parts are attached to it and I wasn't sure, that I would be able to put it back together. However, after I detached main printer body from the bottom cover, I could access bottom...
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    Canon MP540 - PGBK doesn't print anything

    I think, that I might have found the issue. I cleaned the head thoroughly with tap wanter and then by distilled water to avoid deposits, put it back together and performed deep cleaning. After that, I removed it and found out, that the pgbk ink was not sucked into the nozzles. The pgbk ink path...
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    Canon MP540 - PGBK doesn't print anything

    Thank you The Hat - yes, this is exactly how the previous owner used the printer for past few years. I hoped, that I might be able to repair it, but it finally doesn't appear to be the case... Cartridge and print head were replaced, so it points to some electronic issue.
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    Canon MP540 - PGBK doesn't print anything

    Thank you for your answer! I have asked the previous owner. The printer might be 12y old and the PGBK was out for some years already (7-8). There was a CIFS installed for some time, but he was not sure, if the problem started while with CIFS or only after he returned to normal cartridges (but...
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    Canon MP540 - PGBK doesn't print anything

    Dear all, I was given a printer - Canon MP540, which works mostly correctly with one exception, the pigment black (PGBK) doesn't produce any output. Printer doesn't print any error messages, ink level for all cartridges is reported correctly, other colors (CMY+photo black) prints correctly, just...
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