Canon TR8600 Series Online Manual page 451

1600
Cause
Ink may have run out.
What to Do
Replacing the ink tank is recommended.
If printing is in progress and you want to continue printing, tap OK on the printer with the ink tank installed.
Then printing can continue. Replacing the ink tank is recommended after the printing.
Since the information contained in the fax may be lost if it is printed in this condition, the received fax will
not be printed and will be stored in the printer's memory until the ink is replaced. You must manually print
out faxes that were stored in the memory.
You can change the setting so that the received fax is forcibly printed out instead of being stored in the
memory, but all or part of the fax information may not be printed because of the ink out condition.
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