400C931 Series

OKI C931 Series error 400: RAM Memory Issue

The OKI C931 Series error 400 refers to an internal RAM overflow event. This occurs when the printer receives data exceeding its active processing memory, often caused by complex PDF or vector files. A full system reset usually clears the memory address conflicts.

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Common causes

  • 1Data overflow from oversized print jobs.
  • 2Outdated print drivers managing buffer improperly.
  • 3System cache fragmentation.
  • 4Faulty physical RAM module.

Solutions

Diagnóstico rápido

Error 400 presents during processing of high-density graphic files. Check the printer display to see if the error is triggered specifically when sending large documents from a design software.

Solución paso a paso

  1. Clear print queue: Cancel all pending print jobs from your computer's print spooler.
  2. Power reset: Turn off the printer and disconnect from power for 2 minutes to drain internal capacitors.
  3. Update firmware: Install the latest firmware to optimize internal memory management.
  4. Reduce document size: Try splitting your print job or lowering the DPI of the output.

Prevención y mantenimiento

Avoid queuing too many complex jobs at once. If your production volume is high, consider adding an optional RAM DIMM if supported, to extend the buffering capacity.

Cuándo llamar a un técnico

If the error 400 persists for simple documents like text pages, a module of the onboard RAM might be failing, which requires specialized repair.

Ficha técnica del equipo

  • Technology: LED Laser Color Printer
  • Speed/Performance: 50 ppm (A4)
  • Connectivity: Gigabit Ethernet, USB 2.0
  • Paper Capacity: 530 sheets standard
  • Compatible Consumibles: Original C900 Series
  • Recommended Use: Graphic Design and Office Production
  • Official drivers / firmware

Steps to follow

  1. 1

    Clear print queue

    Cancel all pending print jobs from your computer's print spooler.

  2. 2

    Power reset

    Turn off the printer and disconnect from power for 2 minutes to drain internal capacitors.

  3. 3

    Update firmware

    Install the latest firmware to optimize internal memory management.

Frequently asked questions

Error 400 indicates an overflow in the internal RAM when processing overly complex image files.

It happens mainly with very high-resolution graphics that exceed the buffer capacity.

Toner levels are unrelated to RAM, but ensure you are using originals to maintain system stability.

Simply rebooting the device and clearing the pending jobs from the computer handles this.

OKI C931 Series error 400: RAM Memory Issue | Vimazdev