From CANON FAQs:
Alarm / Power light flashes orange 8 times consecutively (Waste Ink Nearly Full Error)
Ink Absorber Replacement Options i350
Ink Absorber Replacement Options
This printer has an ink absorber that takes in ink during the printing and print head cleaning processes. The cleaning process is necessary in order to keep the print head nozzles from becoming clogged. Over the life of the printer, the amount of ink that the ink absorber has absorbed is calculated by the printer. Eventually, after substantial use, the printer will enter an error condition when the ink absorber is nearly full. At this point, printing is still possible by pressing the <Resume> button on the printer. To protect the printer from damage, you will not be able to print at all once the ink absorber is full.
Canon recommends having the printer serviced before the absorber becomes full. We are aware that there are many "do-it-yourself" Web sites that offer instructions for making this repair. Replacing the ink absorber is a complicated and potentially messy procedure. Even if the ink absorber is successfully changed, the ink absorber counter must be reset. Be aware that if you attempt this procedure, it is at your own risk.
Reset the printer
Resetting the Printer
By resetting the printer's power, the print buffer is cleared and certain sensors are reset. If there is invalid data in the buffer, or sensors are stuck in a particular mode; errors may occur.
Follow these steps to reset the printer:
Note: If resetting the printer does not work, please attempt any other solutions that appeared in your search results.If this is a hardware error on the printer, the printer may need to be repaired.
- Turn the printer off with the Power button (if available).
- Disconnect the data cable from the printer (not applicable to WiFi, Bluetooth or Infrared) .
- Unplug the printer's power cord for approximately 10 minutes, and then plug it back in. If troubleshooting a communication issue, reconnect the data cable (not applicable to WiFi, Bluetooth or Infrared).
- Turn the printer back on.