Canon PRO-500 Series Online Manual page 742

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Cause
Non-genuine Canon ink tank has been detected.
What to Do
To print, you must replace the ink tank or disable the function for detecting the remaining ink level. To
disable the function for detecting the remaining ink level, press and hold the printer's Stop button for at
least 5 seconds, and then release it.
By this operation, the fact that you have disabled the function for detecting the remaining ink level will be
memorized. Please be advised that Canon shall not be liable for any malfunction or trouble caused by
using a non-genuine Canon ink tank.
Note
• If the function for detecting the remaining ink level is disabled, the ink tank in gray is displayed on the
LCD when checking the current ink level.
To report the counterfeit ink tank, access Canon website from the following link.
Report Counterfeit
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