Look through a number of device problems in the troubleshooting guide.
The Visioneer OneTouch 7400 USB sports an identifying plaque on the scanner lid, which differentiates it from other Visioneer OneTouch scanners by product number. The scanner is dual-colored, featuring a dark gray bed and light gray lid with a specialized lid to accommodate large scans. This model utilizes a 1200 dpi optical resolution and 48-bit internal color capabilities. Visioneer's OneTouch scanning function allows users to scan with a single touch of one of five buttons, sending the document to a scan, copy, email, OCR, or custom destination.