4-13Chapter 4 Other Functions■ Frame Detection Error Mode SettingIf set to ON, an error message is displayed when thecorrect paper size of the image cannot be detected.If detection fails, the sensor may have failed.IMPORTANT• When the error message is displayed, clean both the sensorglass and the reading glass. (See “Cleaning the Glass” onp. 5-5.)• If an image cannot be scanned normally after the glass hasbeen cleaned, the glass may have been scratched. In such acase, contact the sales dealer or request a servicing.■ Tray Position SettingThe document tray should be set to match the number ofdocument sheets to be loaded (100, 300, or 500 sheets).(See “Preparing the Document Feed Tray” on p. 3-7.)0: Up to 500 sheets (default setting)1: Up to 300 sheets2: Up to 100 sheets■ Separation Torque SettingThis setting adjusts the torque (force of rotation) of theretard roller when the scanner’s capability of separatingdocument pages has degraded due to roller wear, or whenfeeding materials that do not feed easily, such as thinpaper.The default setting is [3]. To increase torque whenscanning thick paper or documents that do not transporteasily, set Torque Control to [4] or [5].To reduce the torque for scanning thin paper, set TorqueControl to [1] or [2].■ Auto USB Power Switch SettingWhen this setting is set to [ON], and a USB cable isconnected, the scanner is turned ON and OFF by thecomputer’s power switch. (See “About the Power Switch”on p. 3-2.)ON: The scanner automatically turns ON and OFF whenthe computer is turned ON and OFF.OFF: The scanner’s power state is not affected by thecomputer’s power state.■ Total CounterDisplays the lifetime total number of document pages fedby the scanner.■ Roller CounterDisplays the number of document pages fed since rollerinstallation or replacement (pickup, feed, and retardrollers). Make sure to reset this counter when replacing therollers. (See “Checking and Resetting the Page Counter”on p. 5-13.)