602B432dn

OKI B432dn error 602: Drum unit failure

The OKI B432dn error 602 indicates that the printer cannot detect or validate the image drum unit. This prevents the system from initiating any print cycles to avoid output defects.

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Common causes

  • 1Improper drum insertion.
  • 2Dust on optical sensor.
  • 3Chip failure.
  • 4Internal housing toner spills.

Solutions

Diagnóstico rápido

Error 602 is often a simple seating issue. If it wasn't inserted until you heard a 'click', the printer won't see it.

Solución paso a paso

  1. Open: Access front panel.
  2. Reseat: Reinstall drum firmly.
  3. Clean: Dust off optical sensors.
  4. Test: Close and let the system detect.

Prevención y mantenimiento

Keep the internal housing free of toner buildup.

Cuándo llamar a un técnico

If the latch mechanism is broken, contact support.

Ficha técnica del equipo

Frequently asked questions

It indicates the drum unit is not detected.

Only if seating/cleaning fails.

Yes, if they have valid chips.

Use dry compressed air only.

OKI B432dn error 602: Drum unit failure | Vimazdev