c-2558bizhub 958

Konica Minolta bizhub 958 error c-2558: Technical Solution

Konica Minolta bizhub 958 error c-2558 is a warning regarding the toner load motor. This code triggers when the copier detects that the supply motor isn't rotating as expected to push toner into the developer. Identifying what error c-2558 means on my bizhub 958 is key to preventing developer unit damage.

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Common causes

  • 1Toner clumping inside the cartridge seizing the motor.
  • 2Mechanical wear of the supply motor drive gears.
  • 3Defective toner sensor.
  • 4Toner spillage blocking the supply auger.

Solutions

Quick Diagnosis

The c-2558 error appears when the supply motor fails its rotation check. If you notice a faint grinding noise or clicking sound when the machine attempts to pump toner, the issue is likely a blocked or seized toner hopper.

Step-by-Step Solution

  1. Verification: Open the front door and remove the toner bottle to ensure it is correctly seated.
  2. Toner inspection: Gently shake the original toner bottle to prevent clumping of the contents.
  3. Cleaning: Wipe the metal contacts and outlet port with a dry, lint-free cloth.
  4. Reset: Close the front door firmly to re-engage the mixing motor.

Prevention and Maintenance

Use only original toner series to ensure powder flow consistency. Do not apply force when inserting cartridges to avoid damaging the internal drive mechanisms.

When to Call a Technician

If replacing the toner bottle does not clear the error c-2558, the supply motor assembly likely requires professional inspection or replacement.

Equipment Specs

  • Technology: Electrophotographic
  • Speed: 95 ppm
  • Connectivity: Gigabit LAN
  • Capacity: 6,650 sheets
  • Consumable: TN-912 original toner
  • Recommended Use: Enterprise production
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Verification

    Open the front door and remove the toner bottle to ensure it is correctly seated.

  2. 2

    Toner inspection

    Gently shake the original toner bottle to prevent clumping.

  3. 3

    Reset

    Close the front door firmly to engage the mixing motor.

Frequently asked questions

It signals a toner supply motor failure; the system cannot detect the required rotation speed while attempting to pump toner into the developer unit.

Yes, print quality will degrade rapidly and the machine will lock if toner cannot be resupplied.

Try a fresh original toner bottle; if it still fails, the internal auger system may be blocked.

Avoid dust spills and keep the coupling mechanism clean whenever you install a new toner bottle.