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Canon Pixma Pro9000 II can’t print black

Yann Shukor
Yann Shukor asked
Last Modified: 2017-12-06
A customer’s printer stopped printing in black

If I print in monochrome a blank sheet comes out

Blacks come out as grey
Greys as very light yellow

The print head has been replaced
Cartridges are all full but one which is at 50%

Tried driver cleaning procedures but obtained no improvement

Any ideas ?

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