e-04DL2400

Fujitsu DL2400 error E-04: Communication failure

The Fujitsu DL2400 error E-04 points to a data transfer issue between the computer and the printer. When the unit fails to process received commands or loses the handshake, this interface error occurs. It is common when using outdated cables or adapters.

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Common causes

  • 1Mismatched data transmission speed.
  • 2Defective data cable or bent pins.
  • 3Electromagnetic interference due to long cabling.
  • 4Printer driver configuration error on the host PC.

Solutions

Quick diagnosis

If this error happens during large print jobs, it's likely the baud rate setting doesn't match between the PC and the printer.

Step-by-step solution

  1. Cables: Verify the connection at both ends.
  2. Configuration: Check the setup menu to match baud rates with the driver.
  3. Cable: Swap the data cable to rule out physical damage.
  4. Test: Send a print test from a different machine.

Prevention and maintenance

Avoid excessively long cables to reduce signal noise. Keep connectors free of dust.

When to call a technician

If the error persists after swapping cables and configurations, the printer's interface board might be damaged.

Equipment data sheet

  • Technology: 24-pin Dot Matrix
  • Speed: Up to 400 cps
  • Interface: Parallel / Serial
  • Ribbon: DL2400 Series
  • Usage: Invoices, multi-part forms
  • Drivers

Steps to follow

  1. 1

    Cables

    Verify the connection at both ends.

  2. 2

    Configuration

    Check the setup menu to match baud rates with the driver.

  3. 3

    Cable

    Swap the data cable to rule out physical damage.

  4. 4

    Test

    Send a print test from a different machine.

Frequently asked questions

Check the data cable and ensure port settings match those on your PC.

Often yes, it can be a misconfigured driver or a faulty cable.

Original DL2400 series ribbons ensure better durability.

This model primarily uses serial or parallel interfaces.