f927eafa__Printer_Warning_Light_Flashes__Action
[Number of flashes/Cause] Four flashes: Ink tank is not installed properly./Ink may have run out. [Action] 
If the lamp on the ink tank is not lit, the ink tank may not be installed properly. Install an appropriate ink tank. If the lamp on the ink tank is flashing, ink may have run out. Replacing the ink tank is recommended. Close the Top Cover after ink tank replacement to resume printing. If printing is in progress and you want to continue printing, press the RESUME/CANCEL button with the ink tank installed. Then printing can continue under the ink out condition. Replace the empty ink tank immediately after the printing. The printer may be damaged if printing is continued under the ink out condition.
The Meaning of Canon Printer Warning Light Flashes
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