170C844dnw

Error 170 OKI C844dnw: Communication Fault Fix

Error 170 on the OKI C844dnw indicates a communication breakdown between the printer's controller and the mainboard, often related to data bus interruptions. This error prevents the printer from processing jobs. The most effective first step is performing a hard power reset to clear the internal buffer.

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Common causes

  • 1Static overload on the data bus preventing internal command processing.
  • 2Outdated firmware creating conflicts with network protocols.
  • 3Electromagnetic interference from low-grade communication cables.
  • 4Mainboard component fatigue due to heavy usage cycles.

Solutions

Diagnóstico rápido

Error 170 typically appears as a persistent message on the LCD panel, freezing the device. Confirm if the printer's network or USB cable is seated properly and check for any unusual mechanical sounds during the boot sequence.

Solución paso a paso

  1. Power off the printer and unplug the power cable for at least 60 seconds.
  2. Disconnect the network or USB cable to eliminate external interference.
  3. Power on the printer without data cables; if the error disappears, the issue is likely external or cable-related.
  4. Reconnect data cables once the system is fully booted and ready.

Prevención y mantenimiento

  • Connect your printer to a surge protector to prevent board damage.
  • Regularly update firmware from the official manufacturer support page.
  • Use high-quality data cables and keep lengths under 3 meters.

Cuándo llamar a un técnico

If the error 170 persists after power cycling and testing with different cables, it likely indicates a hardware failure on the mainboard or internal data path, requiring professional service.

Ficha técnica del equipo

  • Technology: Digital Color LED
  • Speed/Approx performance: Up to 36 ppm color
  • Connectivity: USB 2.0, Ethernet 10/100/1000, Wi-Fi
  • Paper Capacity: 400 sheets standard
  • Compatible consumables: OKI C800 series toner
  • Recommended Use: Office environments
  • Drivers / Official Firmware

Steps to follow

  1. 1

    Hard Reset

    Unplug the power cord for a full minute to drain capacitors.

  2. 2

    Isolate

    Unplug network/USB cables to rule out host communication issues.

  3. 3

    Power Test

    Start the printer without external connectivity.

  4. 4

    Validation

    Run an internal test print if the panel is responsive.

Frequently asked questions

It is a moderate issue. Often a simple reset resolves it, but if it remains, it may indicate a deeper electronic fault.

It is urgent if you rely on the printer, as it blocks all printing operations until the communication link is restored.

It uses the OKI C800 series toner cartridges. Using genuine OKI consumables is recommended for optimal print quality and machine longevity.

Perform external cleaning monthly and professional maintenance every 50,000 prints to ensure long-term reliability.