u5fi-6670

Fujitsu fi-6670 error U5: Motor Troubleshooting

The Fujitsu fi-6670 error U5 indicates an issue within the scanner's motor drive system. This error is triggered when the system detects that the motor is laboring under too much load, often caused by deep internal paper jams or worn-out feed components. This guide provides steps to diagnose and clear the obstruction safely.

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Common causes

  • 1Internal debris hindering movement.
  • 2Worn-out feed tires increasing drag.
  • 3Seized drive gears or roller shafts.
  • 4Electronic motor drive controller failure.

Solutions

Quick Diagnosis

If you see the U5 error, the scanner's main motor is struggling. If you can hear the motor spinning, but paper does not move, the issue is certainly a feed path blockage or failing feed tires.

Step-by-Step Fix

  1. Path Inspection: Open the scanner's internals and carefully check for paper scraps lodged within the feeding assembly.
  2. Cooldown: Turn the unit off for 5–10 minutes to allow the motor drive to reset and dissipate heat.
  3. Test Movement: Manually check for any seized gears or rollers that feel excessively tight.
  4. Restart: Turn the device on; if the motor movement initializes, perform a clean-out scan.

Prevention and Maintenance

Always replace rollers and friction pads according to the scanner’s page count limits. Worn rollers increase the load on the motor drive, causing it to overheat and fail prematurely.

When to Call a Technician

If the U5 error code persists at startup without any paper loaded, the motor driver board has likely failed and needs professional attention.

Equipment Technical Data

  • Technology: Industrial Document Scanner
  • Consumables: Genuine feed roller kit
  • Motor: Stepper drive system
  • Maintenance: Replacement of traction parts
  • Usage: Heavy-duty corporate scanning
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Check rollers

    Ensure there are no obstructions preventing roller rotation.

  2. 2

    Power off

    Turn off the device for a few minutes to let the drive motor cool down.

  3. 3

    Test run

    Try an empty feed scan to check if the motor movement is restored.

Frequently asked questions

The U5 error occurs when the drive motor encounters excess load, often due to a jam or mechanical seizure.

Removing internal paper scraps usually solves this, though physical motor failure will require technical support.

Absolutely. Worn or dirty rollers increase motor strain and lead to U5 errors.

It is a high-duty industrial document scanner.

Fujitsu fi-6670 error U5: Motor Troubleshooting | Vimazdev