c-9402bizhub C3861

Konica Minolta bizhub C3861 error C-9402: Paper Tray Fix

Konica Minolta bizhub C3861 error C-9402 is linked to a failure in the detection or elevation mechanism of the main paper tray. This error occurs when the printer cannot verify the presence of paper or when the motor responsible for lifting the paper stack fails to synchronize. In most cases, adjusting the paper stack or cleaning the detection sensors resolves the issue.

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Common causes

  • 1Misloaded paper preventing the presence sensor from detecting the stack.
  • 2Paper dust buildup on the pickup rollers.
  • 3End-of-paper or tray detection sensor stuck.
  • 4Paper lift motor failure.

Solutions

Diagnóstico rápido

If the error appears immediately upon closing the tray, the paper size detection tab or sensor is likely broken or blocked by debris.

Solución paso a paso

  1. Remove the tray and ensure paper is properly stacked and aligned with side guides.
  2. Clean the pickup rollers with a cloth slightly dampened with distilled water.
  3. Verify the tray detection sensor isn't blocked by paper scraps or dropped staples.

Prevención y mantenimiento

Avoid overfilling the tray beyond the maximum limit line. Clean the feed rollers every quarter to ensure correct paper traction.

Cuándo llamar a un técnico

If the lift motor makes grinding noises or fails to lift the base after a reset, the internal gear assembly may be damaged and requires a technician's inspection.

Ficha técnica del equipo

  • Technology: A4 Color Laser
  • Speed/performance: 40 ppm
  • Connectivity: Ethernet, USB 2.0
  • Feeding capacity: 600 sheets standard
  • Compatible consumables: Roller maintenance kits
  • Recommended usage: Corporate high-volume office
  • Drivers / official firmware

Steps to follow

  1. 1

    Paper Alignment

    Remove the tray and ensure paper is properly stacked and aligned with side guides.

  2. 2

    Roller Cleaning

    Clean the pickup rollers with a cloth slightly dampened with distilled water.

  3. 3

    Sensor Check

    Verify the tray detection sensor isn't blocked by paper debris or staples.

Frequently asked questions

This code indicates a failure in the main paper tray elevation or detection system.

If persistent, the machine won't detect the paper and will lock the printing function until resolved.

Not toner, but pickup roller kits are essential preventive maintenance components.

It is recommended to clean paper rollers at least once a month to prevent jams and feed errors.

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