error-391MB262

OKI MB262 error 391: Toner Empty Fault

OKI MB262 error 391 indicates the toner cartridge has reached its page limit. Unlike communication errors, 391 blocks printing until a new consumable is detected.

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Common causes

  • 1Toner exhausted per page cycle.
  • 2Defective toner chip.
  • 3Cartridge improperly seated.
  • 4Chip memory write error.

Solutions

Quick Diagnosis

The 391 is a status error. There's nothing to clean; the internal chip counter has hit zero. If the cartridge is new, the chip may be faulty.

Step-by-Step Fix

  1. Open the front cover.
  2. Remove the empty cartridge.
  3. Insert a new original cartridge.
  4. Close the cover and wait for the light to clear.

Prevention and Maintenance

Always keep spare toner. Clean excess toner dust from the drum using compressed air during replacement.

When to Call a Technician

If the error persists with a new original toner, the drum unit might need a technician reset.

Device Specifications

  • Technology: LED
  • Consumable: OKI B412 toner
  • Usage: Office
  • Drivers

Frequently asked questions

Indicates toner is empty according to its chip.

Replace the toner cartridge with a new one.

OKI MB472 series toner.

Clean drum area during change.

OKI MB262 error 391: Toner Empty Fault | Vimazdev