1240PIXMA TS7520a

Canon PIXMA TS7520a error 1240: How to fix it

The Canon PIXMA TS7520a error 1240 indicates that the scanner lid is not properly detected as closed, preventing scan or copy jobs. This error code is often triggered by misaligned hinges or sensor obstruction. Fixing this issue generally involves basic inspection of the scanner bed and ensuring the lid is properly seated. This guide covers the troubleshooting steps needed to get your scanner back in working order.

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Common causes

  • 1Sensor blocked by debris or dust.
  • 2Hinge misalignment after heavy use.
  • 3Failure in the internal scanner cable.
  • 4Mechanical obstruction prevents full lid closure.

Solutions

Quick Diagnosis

Error 1240 appears when the printer cannot confirm the scanner cover is closed. Why does my Canon PIXMA TS7520a show error 1240? Often, a small piece of paper or dust on the hinge sensor causes the system to report an open lid, even if it appears closed. Check the hinge area and the glass surface for any foreign items.

Step-by-step Solution

  1. Check the lid: Ensure the scanner lid is completely closed.
  2. Inspect sensors: Clean any dust around the sensor area.
  3. Reboot the unit: Power cycle the printer for 60 seconds.
  4. Test scanning: Attempt a fresh scan to see if the message remains.

Maintenance and Prevention

Handle the scanner lid gently to prevent misalignment of the internal hinge sensor. Clean the glass regularly with a microfiber cloth and ensure the printer surface is level. We recommend official ink cartridges to prevent ink spills that could damage the sensitive internal hardware.

When to call a technician

If the error persists after rebooting and cleaning, it could indicate a failed sensor or damaged flex cable. Do not attempt to dismantle the lid yourself; contact professional support to prevent further damage.

Device Technical Data

  • Technology: CIS Flatbed Scanner
  • Speed/Performance: 15 ipm (black) / 10 ipm (color)
  • Connectivity: Wi-Fi, USB
  • Input capacity: 100 sheets
  • Compatible ink: PGI-280 / CLI-281 series
  • Recommended use: Home and light office
  • Official drivers / firmware

Steps to follow

  1. 1

    Check the lid

    Ensure the scanner lid is closed flat and no objects are preventing a proper seal.

  2. 2

    Inspect sensors

    Check for debris or dust around the lid sensor area on the back.

  3. 3

    Reboot the unit

    Power off the printer, unplug it, and wait 60 seconds before restarting.

  4. 4

    Test scanning

    Run a sample scan using the software to confirm the error is cleared.

Frequently asked questions

This error means the internal sensor does not detect the scanner lid as closed.

It is urgent if you need the scanner. However, it does not prevent document printing, so you can keep printing for now.

This model uses PGI-280 / CLI-281 series ink. Avoid third-party refills to protect internal scanner components.

Keep the scanning glass clean and avoid slamming the lid shut to protect the hinge and sensors.

Canon PIXMA TS7520a error 1240: How to fix it | Vimazdev