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In most instances, a 6000 error will require a repair at a Canon authorised repair centre, however prior to sending your printer for repair please follow the steps below to try and resolve this error-
If the error message is still showing, then it is necessary to deliver or send the printer to an authorised repair centre.
If the printer is still under warranty, (generally one year from purchase) and supporting documentation is provided, then a free of charge warranty repair will be carried out.
If the warranty has expired, then any repairs can only be carried out at cost and charges will apply.
You can find the details of your nearest repair centre using our interactive repair centre locator.
If you own a PIXMA PRO-1 please contact Canon -> contact us directly as you may be eligible for an on-site repair.
Yes, It seems like that, But it is good to contact Canon help desk first.
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Actually for this error we can not try much except this,It is basically a hardware issue ;-
I have opened my rating for you. You can rate me 3+ stars to pay me for my service.