Canon imagePROGRAF iPF825 MFP M40 User Manual page 828

Maintenance > Ink Tanks
If a message for checking the ink is shown on the Display Screen
When there is little ink left, the Message lamp is lit and "Ink Level: Check" is shown on the Display Screen. You can
continue to print, but prepare to replace the Ink Tank. (See "Checking Ink Tank Levels.")
Before print jobs and maintenance that consume a lot of ink
If little ink is left, there may not be enough for large-format printing, head cleaning, and maintenance, which require a lot of
ink. In this case, replace or prepare to replace the Ink Tank before maintenance.
If a message for ink replacement is shown on the Display Screen
When ink runs out, the Message lamp flashes, a message regarding Ink Tank replacement is shown on the Display Screen,
and printing is disabled. Replace the Ink Tank at this point.
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When to Replace Ink Tanks
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iPF825