Fujitsu fi-7800 Operator's Manual page 32

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[Hopper Level] can also be displayed by shortcut key. To display [Hopper Level] by shortcut key, press the [Eject]
button and either the [ ] or [ ] button at the same time when [Ready] is displayed.
Change the hopper level by using the [ ] or [ ] button in [Hopper Level].
Note that the [Hopper Level] screen is not displayed unless the two buttons are pressed simultaneously.
When [Hopper Level] is displayed by shortcut key, the screen returns to [Ready] after a certain period of time.
This period of time can be configured in [18: Operation Panel Timeout] of the operator panel.
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