400B432dn

OKI B432dn error 400: Internal memory failure

The OKI B432dn error 400 is a data processing fault often caused by memory saturation. This usually happens when handling complex print files that exceed the device's RAM capacity, causing a temporary logic lockout.

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Common causes

  • 1Complex file processing exceeding RAM limits.
  • 2Driver/Language compatibility conflicts (PostScript vs PCL).
  • 3Network data corruption.
  • 4Outdated firmware failing to manage memory efficiently.

Solutions

Diagnóstico rápido

Error 400 is a classic sign of memory overload. If you see this right after sending a large file, the device needs a reset to clear its buffer.

Solución paso a paso

  1. Queue clear: Clear all pending jobs from the computer queue.
  2. Power cycle: Turn off the device and unplug for 2 minutes to drain residual power.
  3. Language settings: Switch your print driver from PostScript to PCL6 for better memory handling.
  4. Test: Run a configuration report to confirm memory is responsive.

Prevención y mantenimiento

Update firmware regularly. Use standard drivers to optimize memory throughput.

Cuándo llamar a un técnico

If the error occurs even with simple text files after a factory reset, the board might be failing.

Ficha técnica del equipo

  • Technology: Digital LED
  • Throughput: 40 ppm
  • Connectivity: USB / Ethernet
  • RAM: 512MB
  • Compatible Consumables: B412/B432 Toner Series
  • Recommended Usage: Office
  • Official Drivers / Firmware

Frequently asked questions

This indicates a memory overflow. Try clearing the Windows print queue and restarting the printer.

It halts processing, so immediate attention is required to clear the memory buffer.

No, error 400 is logic-based, not consumable-related.

Keep firmware updated and avoid overly complex graphic jobs if you encounter this frequently.