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OKI B4400 error replace-drum: Quick Solution

The OKI B4400 error replace-drum is a programmed alert indicating that the imaging drum's lifecycle counter has reached its preset limit. This does not strictly imply a hardware failure, as it is based purely on page output estimates. Users can often reset the counter if the print quality is still acceptable, though physical wear will eventually necessitate a replacement.

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Common causes

  • 1Internal page count reached.
  • 2Natural wear of the photosensitive drum surface.
  • 3Toner residue accumulating on the sensor.
  • 4Drum chip communication error.

Solutions

Diagnostic Overview

A blinking indicator light on the control panel signals the error. If prints appear clean without streaks, the error is a software counter alert rather than a component malfunction.

Step-by-step Solution

  1. Open the top cover while the machine is on.
  2. Locate the reset button inside the compartment.
  3. Perform the reset by holding it down until the lights blink.
  4. Close the cover to finish initialization.

Maintenance and Prevention

Keeping the LED head clean is essential for streak-free printing. Maintain a dust-free environment to prolong drum life. Use high-quality original toner to prevent buildup on the drum's photosensitive surface.

When to call a technician

If resetting does not resolve the warning, or if print quality remains poor, the internal sensor or drum gear may be physically damaged.

Technical Specifications

  • Technology: Monochrome LED
  • Speed: 26 ppm
  • Connectivity: USB 1.1 / Parallel
  • Capacity: 250 sheets
  • Consumable: B4400 toner series
  • Usage: SOHO
  • Official Drivers / firmware

Steps to follow

  1. 1

    Open cover

    Open the printer front cover while the unit is powered on.

  2. 2

    Press button

    Hold the reset or online button for 5 seconds to bypass the counter.

  3. 3

    Close cover

    Close the cover and wait for the error LED to turn off.

Frequently asked questions

The printer tracks drum usage by page count; once the limit is reached, it displays the warning regardless of the drum condition.

Not necessarily; if print quality remains high, you can reset the counter and continue using the current drum.

This printer requires specific B4400 series toner cartridges and an imaging drum.

Regularly clean the LED head and corona wire with a dry, soft cloth.