Canon imagePROGRAF iPF750 MFP M40 User Manual page 754

Maintenance and Consumables
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
> Ink Tanks >
iPF750