FUJITSU fi-4750L - Manual (Page 20)

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Operation status
The operation status is indicated by the following messages:
<Power-on>
<Reading>
<Waiting for Start> The scanner displays the following screen when waiting for the
Start button to be pressed:
(Only When the Video Interface
Option is installed.)
<Cleaning request> When the Pick roller cleaning is necessary, the scanner displays
the following on the upper line:
When the ADF glass cleaning is necessary, the scanner displays
the following on the LCD:
Clean the Pick roller or the ADF glass in accordance with the
manual, “Cleaning and Maintenance”.