Had a Canon i9950 for 4 years, the last 2 it's been fitted with a CISS system without a problem,...
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Had a Canon i9950 for 4 years, the last 2 it's been fitted with a CISS system without a problem, till last week. Finished printing a job one day & the next day it stopped printing group 2 colours. tried cleaning the printhead, but it is the same. Air bubbles seem to be back-feeding up the lines to the bottles. Could it be the purge unit?