e-40imageFORMULA DR-C240

Canon imageFORMULA DR-C240 E-40 error: Sensor Fix

The Canon imageFORMULA DR-C240 error E-40 is a specific code indicating that the paper exit sensor detects an obstruction or false signal during the scan cycle. This error is critical as it halts document exit, protecting the equipment from larger damage. Many users ask: 'How to fix E-40 exit error on Canon DR-C240?' and the key is a deep clean of the output tray's optical sensors.

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Common causes

  • 1Paper dust accumulated on the exit sensor.
  • 2Adhesive label remnants causing false document detection.
  • 3Optical exit sensor misaligned due to constant vibrations.
  • 4Dirty exit roller preventing full document advancement.

Solutions

Quick Diagnosis

If the scanner feeds paper but stops right at the end (the exit) and displays E-40, it is almost certain the output optical sensor is blocked by paper scraps or accumulated dust.

Step-by-step Solution

  1. Open: Open the front and rear scanner covers to get full access to the paper path.
  2. Clean: Use a dry cloth or compressed air to clean the output optical sensors near the final drive rollers.
  3. Reset: Close all covers correctly and restart the unit so sensors can auto-recalibrate.

Prevention and Maintenance

Perform monthly cleaning with a soft, lint-free cloth. Ensure documents being scanned have no tape fragments that could peel off inside the equipment.

When to Call a Technician

If the code persists after cleaning and clearing obstructions, the paper exit sensor is likely physically misaligned.

Device Technical Sheet

  • Technology: Compact duplex scanner
  • Speed: 45 ppm
  • Connectivity: USB 2.0
  • Resolution: Up to 600 DPI
  • Compatible consumable: Exchange Roller Kit
  • Recommended use: Administrative document management
  • Official drivers / support

Steps to follow

  1. 1

    Open

    Open the front and rear covers to inspect the entire paper path.

  2. 2

    Clean

    Clean the exit optical sensors with a soft, dry cloth.

  3. 3

    Reset

    Close all covers and restart the scanner to recalibrate the sensor.

Frequently asked questions

Cleaning the exit sensor located at the end of the paper path with a dry cloth usually clears the E-40 error.

No, if the sensor is simply blocked by paper debris, the scanner will function perfectly after cleaning.

Weekly cleaning of the paper path prevents these types of sensor errors.

Original separator roller kits keep the paper aligned and away from optical sensors.