Canon PIXMA G6070 Online Manual page 362

1365
Cause
Ink valve is open.
What to Do
Keep the ink valve closed while replacing the print head.
Open the scanning unit / cover and close the ink valve by tilting the ink valve lever tightly to the left.
And then, press the printer's OK button to cancel the error.
Note
• When you stop replacing the print head, press the printer's Stop button.
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