31.02cx820de

Lexmark CX820de error 31.02: Imaging Unit Fail

The Lexmark CX820de error 31.02 occurs when the printer fails to register a specific imaging unit. This is a vital component for laser printing and requires physical verification. Below, we describe the steps to isolate and correct the faulty unit.

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Common causes

  • 1Imaging unit at end of life
  • 2Dirty electrical contacts
  • 3Chip failure
  • 4Incompatible unit installed

Solutions

Diagnóstico rápido

If you see 31.02, identify which color unit is failing on the display. It is rarely a machine failure, but rather a contact issue or end-of-life unit.

Solución paso a paso

  1. Access: Open the front cover.
  2. Identify: Pull out the indicated imaging unit.
  3. Inspect: Check for dust on the chip connector.
  4. Reinstall: Clean with a dry cloth and reseat securely.

Prevención y mantenimiento

Avoid direct light on the drum surface. Keep consumables in their original packaging until required.

Cuándo llamar a un técnico

If replacing the imaging unit does not solve the 31.02 error, the internal wiring might be faulty.

Ficha técnica del equipo

  • Technology: Laser
  • Speed: 57 ppm
  • Connectivity: Ethernet/USB
  • Compatible Consumables: 72K imaging unit
  • Recommended Use: Enterprise
  • Official drivers / firmware

Frequently asked questions

This code means the printer cannot detect or communicate with a specific imaging unit.

Possibly, check for internal drum damage or contact chip corruption.

This model uses the 72K series imaging units.

Keep the imaging area free from dust and use genuine parts.

Lexmark CX820de error 31.02: Imaging Unit Fail | Vimazdev