390-01MC873dnfax

OKI MC873dnfax error 390-01 Fix

The OKI MC873dnfax error 390-01 is a technical fault within the Automatic Document Feeder (ADF). This code appears when the paper sensor does not register expected document movement or when a physical obstruction exists. Regular cleaning is essential for continuous scanning reliability.

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Common causes

  • 1Paper or label scraps stuck in the path sensor.
  • 2Excessive toner or paper dust accumulation on rollers.
  • 3Documents with high-friction textures causing irregular feeding.
  • 4Mechanical fatigue of the ADF feeder actuators.

Solutions

Quick Diagnosis

If the feeder attempts to pull a document, stops, and displays 390-01, a small paper scrap is likely lodged near the ADF exit sensor.

Step-by-Step Solution

  1. ADF access: Open the feeder lid and remove any misaligned sheets.
  2. Optical cleaning: Use air or a swab to clean optical sensors that track paper movement.
  3. Roller care: Clean drive rollers with a soft cloth slightly dampened with distilled water.
  4. Reset: Power off the MFP, wait 30 seconds, and turn back on to reset ADF logic.

Maintenance and Prevention

Remove all clips and staples. Clean rollers and scanner glass at least once a month for heavy usage.

When to Call a Technician

If the motor makes clicking noises or the error persists after thorough cleaning, the ADF internal gears require professional repair.

Technical Specs

  • Technology: A3 color laser printer.
  • ADF Speed: 35 ppm (scanning).
  • Connectivity: USB, LAN, NFC.
  • ADF Capacity: Up to 100 sheets.
  • Compatible Consumables: Original MC873 toner series.
  • Usage: Office productivity.
  • Official Support

Steps to follow

  1. 1

    Open feeder

    Lift the ADF cover to check the paper path.

  2. 2

    Clean sensor

    Wipe optical sensors with a dry swab to remove dust.

  3. 3

    Check original

    Ensure originals contain no clips or staples that might block the path.

Frequently asked questions

This error means the Automatic Document Feeder (ADF) cannot complete its scan cycle due to an obstruction or sensor fault.

Forcing the opening or pulling jammed documents without opening the mechanism can break internal plastic actuators.

Yes, cleaning with a lint-free damp cloth is crucial for maintaining proper paper grip.

If the error continues after cleaning, the ADF drive motor or gears might have a mechanical failure.