Canon MX520 series Online Manual page 160

1688
Cause
The ink has run out.
Action
Replace the ink cartridge and close the paper output cover.
If printing is in progress and you want to continue printing, press the machine's Stop button for at least 5
seconds with the ink cartridge installed. Then printing can continue under the ink out condition.
The function for detecting the remaining ink level will be disabled.
Replace the empty ink cartridge immediately after the printing. The resulting print quality is not satisfactory,
if printing is continued under the ink out condition.
Note
If the function for detecting the remaining ink level is disabled, the ink cartridge in grey is displayed in
the remaining ink volume screen on the LCD.
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 machine's memory until the ink cartridge 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.