Canon S300 User Manual page 149

Six flashes: No print head installed
Install a print head.
Seven flashes: Defective print head
Contact a Canon service representative.
Eight flashes: Waste ink tank almost full
The printer has a built-in waste ink tank for the ink used during print head cleaning. Eight
flashes indicates that the waste ink tank is nearly full. Press the RESUME/CANCEL
button to cancel the error so you can continue printing. Before the waste ink tank
becomes completely full, contact a Canon service representative to have the waste ink
tank replaced.
Note
Canon recommends to call for service as soon as this error occurs. Once
the waste ink tank becomes completely full, printing will no longer be
possible.
The POWER Lamp Flashes Orange
Troubleshooting
149