Canon PIXMA TS6250 Online Manual page 446

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. The printer may be
damaged if printing is continued under the ink out condition.
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