Fujitsu fi-7140 – Troubleshooting Notes (DriverFiles)
People usually landed here convinced the fi-7140 had a broken driver after it suddenly stopped behaving as expected. These notes exist because many of those attempts went in circles: the scanner still worked in some contexts, failed in others, or only came back after changes that didn’t really line up with a simple driver fault.
Problem: Scanner not detected by PaperStream
What users observed: Despite previously working smoothly, the scanner abruptly stopped being recognized by PaperStream Capture, returning an error that no scanner was available. At the same time, the device could still scan using the operating system’s basic scanning tools, which made the failure confusing.
What was tried: Multiple driver removals and reinstalls were attempted, along with reinstalling PaperStream and related TWAIN components. A system restore was also attempted. The behavior did not change, including on a second computer.
Where this sometimes ended: The scanner started working again only after a specific internal TWAIN file was renamed and replaced. Until that change, PaperStream consistently failed to detect the device.
Problem: Optical error reported by the ADF
What users observed: The scanner displayed optical error codes tied to the front or back sensor in the automatic document feeder and stopped normal operation.
What was tried: Cleaning and power cycling were attempted.
How this played out: The error cleared for some after cleaning and restarting.
Problem: Every other page misfeeds at an angle
What users observed: During batch scanning, every second sheet exited skewed at roughly a quarter turn, while alternating pages fed normally. No error codes were shown.
What was tried: Driver state was questioned, but no software changes affected the issue.
What this turned out to be: The behavior was attributed to inconsistent paper pickup caused by worn or dirty feed components rather than a driver problem.
Where this sometimes ended: The misfeeds persisted until the physical feed mechanism was addressed and replaced entirely.
Problem: “Scanner is not available” when used with DocuWare
What users observed: The scanner worked elsewhere but could not be accessed by DocuWare, which reported that no scanner was available.
What was tried: Driver presence was verified, and the driver was up to date, but the error remained.
What this turned out to be: The failure was linked to conflicts among multiple scanner entries within the TWAIN directory.
Where this sometimes ended: Once again, scanning resumed after isolating the conflicts with the TWAIN driver and its specific location.
Problem: Hardware scan button stops working after undocking a laptop
What users observed: The physical scan button stopped launching the assigned application every time a docked laptop was disconnected and reconnected. The scanner itself remained functional.
What was tried: Drivers were kept up to date, but the behavior continued across repeated docking cycles.
How this played out: The button mapping had to be manually restored each time. No permanent resolution was identified.
Problem: Communication error after restarting Capture Professional
What users observed: The scanner worked normally when the application was first opened, but after closing and reopening the software, a communication failure error appeared unless the scanner itself was power-cycled.
What was tried: Restarting the application alone did not help. Power-cycling the scanner did.
What this turned out to be: The issue was traced to a system-level hardware interface driver rather than Capture Professional or the scanner driver itself.
Where this sometimes ended: The scanner continued to require a power reset between sessions to avoid the error.
Other multifunctional printers showing similar behavior:
- Scans your system for missing or outdated drivers
- Downloads and installs the correct versions
- Creates a restore point before making changes