Epson ET-2751 User Manual page 119

You see this window:
2. Select the Document Source setting that matches where you placed your original.
3. Select the Document Size setting that matches the size of your original. You can select Customize
to enter a custom size, if necessary.
4. Select the image type of your original and how you want it scanned as the Image Type setting.
5. Select the Resolution setting you want to use for your scan.
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