size-errorMFC-L2717DW

Brother MFC-L2717DW error: Size Mismatch

The Brother MFC-L2717DW size error appears when the document sent to print doesn't correspond to the paper size defined for the active tray. When you ask why your Brother MFC-L2717DW reports a size error, it is almost always due to guide misalignment or a mismatch between the computer's document settings and the physical paper loaded. Correcting this is a simple matter of tray maintenance and configuration.

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Common causes

  • 1Incorrectly adjusted paper tray guides.
  • 2Mismatch between print driver settings and physical tray.
  • 3Dust buildup on tray size sensors.
  • 4Improper loading of paper stack.

Solutions

Diagnostic Steps

If you see a size error message, verify if your physical paper guides are snug against the edges of the stack. A loose guide causes the tray sensors to report an incorrect paper length to the logic board.

Troubleshooting Steps

  1. Remove the paper tray completely.
  2. Adjust the green side guides to firmly hold your paper stock.
  3. Ensure the tray is pushed all the way in to trigger the size sensor.
  4. Use the printer panel menu to verify the tray is set to the correct size matching your loaded paper.

Prevention and Maintenance

Avoid mixing paper types or sizes in the same tray. Keep the tray base clean from paper dust, which can accumulate near the sensors and lead to false readings. If you frequently change paper sizes, ensure you update the printer's internal menu every time.

When to Call a Technician

If the error persists after confirming guides and panel settings, it is possible that the physical tray sensor is obstructed or broken and requires a professional replacement.

Equipment Data Sheet

  • Technology: Monochrome Laser
  • Supported Sizes: A4, Letter, Executive, Legal
  • Print Speed: 36 ppm
  • Consumables: TN-760 Toner
  • Tray capacity: 250 sheets
  • Target Usage: Small Office
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Adjust Guides

    Align the sliding paper guides precisely against the edges of the loaded paper stack.

  2. 2

    Panel Configuration

    Access the menu and set the paper size to match the physical paper in the tray.

  3. 3

    Software Sync

    Ensure the print settings on the computer match the selected tray and paper size.

Frequently asked questions

It means the printer detects a paper size that does not match the settings of the print job or the tray configuration.

Usually not, it is just a configuration mismatch between the printer hardware and the print software settings.

No, size errors are managed by tray sensors and software configuration, not toner status.

Make sure your tray guides are snug and verify the size setting on the printer panel every time you change paper.