Canon pro-10s series Online Manual page 445

1699
Cause
Printer detected ink out condition (The lamp on the ink tank flashes).
Action
Stop printing, replace the ink tank, and then print again. Be sure to replace the empty ink tank before
resuming printing.
An ink tank that was once empty is installed.
Printing under the ink out condition may cause the printing trouble such as the mixing of inks, or a printer
malfunction.
If you want to continue printing, you need to release the function for detecting the remaining ink level. To
release this function, press and hold the printer's RESUME/CANCEL button for at least 5 seconds, and
then release it.*
* With this operation, releasing the function for detecting the remaining ink level is memorized. Please be
advised that Canon shall not be liable for any malfunction or trouble which may be caused by continuation
of printing or refilling of ink.
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