e-701DL3850+

Fujitsu DL3850+ Error E-701: How to Fix

The Fujitsu DL3850+ error E-701 is a communication failure detected by the internal controller. It usually occurs when the printer firmware loses sync with the carriage motor or printhead. To resolve the E-701 error on your DL3850+, check the physical connections first. This device is known for its durability in demanding industrial environments.

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Common causes

  • 1Printhead interface communication error.
  • 2Partial disconnection of the motor data cable.
  • 3Internal bus voltage spike.
  • 4Firmware corruption after a sudden power loss.

Solutions

Diagnóstico rápido

The error E-701 appears on the LCD panel upon startup. If the carriage doesn't move to its home position, the data bus communication is likely compromised.

Solución paso a paso

  1. Power cycle: Disconnect power for 60 seconds.
  2. Cable inspection: Check the ribbon cable for kinks or damage.
  3. Logic reset: Perform a factory reset using the printer's menu combo.
  4. Sensor check: Ensure the start sensor is clean.

Prevención y mantenimiento

Keep the workspace clean of metal dust. Change ribbons before they dry out completely to protect the printhead.

Cuándo llamar a un técnico

If the error persists after resetting, the mainboard may be damaged, requiring professional board-level repair.

Ficha técnica del equipo

  • Technology: 24-wire dot matrix.
  • Speed: Up to 720 cps.
  • Connectivity: Parallel & USB.
  • Paper feed: Continuous/Sheet.
  • Compatible consumables: D3850-B ribbon.
  • Recommended use: Logistics and invoicing.
  • Official drivers / support

Steps to follow

  1. 1

    Power cycle

    Turn off the printer for 30 seconds and reboot.

  2. 2

    Check cables

    Inspect the parallel or USB cables for damaged pins.

  3. 3

    Self-test

    Run a self-test print from the control panel.

Frequently asked questions

The E-701 error indicates an interruption in data communication between the printhead and the main controller.

Yes, this error stops all print operations, requiring immediate attention to resume work.

It uses heavy-duty nylon ribbons specific to the DL3850 series for long-lasting output.

Use compressed air to clean debris; avoid liquid cleaners which may damage the pins.