unable-to-print-34MFC-J805DW

Brother MFC-J805DW error unable-to-print-34: Solution

The Brother MFC-J805DW error unable-to-print-34 occurs when the printhead sensor loses position track. If you are asking how to fix unable-to-print-34 Brother error, focus on cleaning the encoder strip. This error is common if ink spray has coated the clear encoding film, preventing accurate signal reading.

1 views

Common causes

  • 1Ink residue on the transparent encoder strip.
  • 2Debris obstructing the light sensor.
  • 3Mechanical obstruction of the carriage path.
  • 4Internal timing error due to sensor fatigue.

Solutions

Quick Diagnosis

If the carriage strikes the edges or halts mid-scan, it is almost certainly an dirty encoder strip. Visual inspection should show faint stains.

Step-by-Step Solution

  1. Unplug: Cut power completely.
  2. Lift: Open scanner hood.
  3. Sanitize: Wipe the encoder strip gently with alcohol.
  4. Reset: Reconnect power to recalibrate.

Prevention and Maintenance

Use Brother original ink to prevent internal clogging. Avoid manual pressure on the printhead assembly during cartridge replacement.

When to Call a Technician

If the strip is physically damaged (cracked/bent), cleaning will not help and an official service part is needed.

Equipment Specs

  • Technology: Inkjet INKvestment Tank
  • Speed: 12 ppm (B&W)
  • Connectivity: Wi-Fi
  • Compatible Consumable: LC3033 series
  • Recommended Use: Home office
  • Drivers / firmware official

Steps to follow

  1. 1

    Access encoder

    Open printer cover and locate the strip.

  2. 2

    Clean

    Gently clean with a lint-free cloth.

  3. 3

    Restart

    Perform power cycle.

Frequently asked questions

It is an encoder strip reading error that prevents printhead movement.

Yes, usually cleaning the encoder strip solves the issue.

Use genuine LC3033 series cartridges.

Perform regular maintenance and keep internal parts clean.