c-2558bizhub 251i

Konica Minolta bizhub 251i error C-2558: Technical Solution

The Konica Minolta bizhub 251i error C-2558 is a technical warning indicating synchronization problems in the developer unit. This code occurs when the Toner Concentration (TCR) sensor detects values out of range, preventing the machine from maintaining correct print density. Resolution requires evaluating supply components and potential calibration in service mode.

0 views

Common causes

  • 1Toner Concentration (TCR) sensor failure.
  • 2Premature wear of developer unit internal components.
  • 3Obstructed gears preventing the developer unit motor from rotating.
  • 4Use of low-quality toner degrading original developer properties.

Solutions

Diagnóstico rápido

The C-2558 error appears on the touch panel during initialization or after a long print run. If the unit makes a metallic sound when trying to rotate the developer motor, the issue might be mechanical. This code is highly specific and should not be confused with paper jams.

Solución paso a paso

  1. Power off the machine and access the imaging unit area (by opening the front door).
  2. Verify that the developer unit rotates freely and has no obstructions.
  3. Ensure the toner cartridge is correctly inserted and does not block the sensor.
  4. If the error persists after powering on, a technician must enter service mode to reset the TCR value.
  5. If the TCR sensor continues to report anomalous values, replace the developer unit.

Prevención y mantenimiento

Using exclusively original TN-328 consumables prevents developer crystallization. Periodically clean the optical sensors in the development path to ensure accurate concentration readings.

Cuándo llamar a un técnico

C-2558 often requires technical intervention if the logic reset does not work, as it may indicate gear wear in the developer unit motor.

Ficha técnica del equipo

  • Technology: A3 Monochrome Laser
  • Speed: 25 ppm
  • Connectivity: Ethernet, USB 2.0
  • Capacity: 600 - 3,600 sheets
  • Compatible consumable: TN-328 Toner
  • Recommended use: Departmental corporate environments
  • Official drivers / firmware

Steps to follow

  1. 1

    Initial inspection

    Verify if the developer motor rotates correctly.

  2. 2

    Reset sensors

    Enter service mode to reset the toner concentration sensor values.

  3. 3

    Replacement

    If the developer unit shows wear, contact your provider for a replacement part.

Frequently asked questions

This error points to an irregularity in the toner concentration sensor (TCR) or a developer motor failure.

No, error C-2558 locks the system to ensure print quality.

It uses the TN-328 toner cartridge.

Yes, to avoid developer degradation, servicing every 80,000 copies is recommended.