serial-parity-errDL2401

Fujitsu DL2401 error serial-parity-err: Troubleshooting

Fujitsu DL2401 error serial-parity-err indicates a data communication mismatch between the host and the printer. Often caused by incorrect parity bit or baud rate settings. Synchronize these parameters to resolve the error.

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Common causes

  • 1Baud rate mismatch.
  • 2Electromagnetic interference.
  • 3Wrong stop bits setting.
  • 4UART chip hardware failure.

Solutions

Diagnóstico rápido

If you see gibberish before the error, communication parameters are unsynchronized.

Solución paso a paso

  1. Access panel settings.
  2. Go to serial (RS-232C) parameters.
  3. Match parity and data bits.
  4. Reboot communication.

Prevención y mantenimiento

Keep cables under 5m. Use genuine ribbons to prevent ink dust buildup.

Cuándo llamar a un técnico

If errors remain despite parameter matching, the UART chip may be failing.

Ficha técnica del equipo

  • Technology: Impact dot matrix printer
  • Connectivity: Serial RS-232C / Centronics
  • Compatible Consumables: DL Series Ribbons
  • Recommended Use: Data reports and invoicing
  • Official drivers / firmware

Steps to follow

  1. 1

    Check baud rate

    Ensure PC and printer match.

  2. 2

    Set parity

    Change printer parity menu to matching setting.

  3. 3

    Save

    Save to non-volatile memory.

Frequently asked questions

Data packets received don't match the parity bits configured.

It can be cable noise, but mostly settings.

DL series compatible ribbons.

Clean paper rollers yearly.