These symbols may be displayed above the ink level: ! if ink is low, × if no ink is left, and ? if you have deactivatedink level detection.The remaining ink level is indicated as shown below.If the Display Screen indicates to replace the Ink Tank, replace the Ink Tank. If a message is displayed indicating tocheck the remaining ink levels, or after tasks that consume a lot of ink such as large-format printing or head clean-ing, check the remaining levels and replace Ink Tank as needed. (See "Replacing Ink Tanks.") ➔P.496When to Replace Ink TanksWhen to Replace Ink TanksReplace or prepare to replace ink tanks in the following situations.If a message for checking the ink is shown on the Display ScreenWhen there is little ink left, the Message Lamp is lit and "Not much ink is left." is shown on the Display Screen.You can continue to print, but prepare to replace the Ink Tank. (See "Checking Ink Tank Levels.") ➔P.500Before print jobs and maintenance that consume a lot of inkIf little ink is left, there may not be enough for large-format printing, head cleaning, and maintenance, which requirea 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 ScreenWhen ink runs out, the Message Lamp flashes, a message regarding Ink Tank replacement is shown on the Dis-play Screen, and printing is disabled. Replace the Ink Tank at this point.iPF770 When to Replace Ink TanksUser's GuideMaintenance and Consumables Ink Tanks501