420es4132dn

OKI es4132dn Error 420 Troubleshooting Guide

The OKI es4132dn error 420 indicates a communication failure between the printer and the toner cartridge chip. This prevents the machine from verifying the supply level. Most cases are solved by simply reseating the toner cartridge.

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Common causes

  • 1Oxidation on the toner chip.
  • 2Poor cartridge seating.
  • 3Faulty supply sensor.
  • 4Firmware communication timeout.

Solutions

Diagnóstico rápido

If the display highlights '420', the printer logic board is struggling to communicate with the toner sensor.

Solución paso a paso

  1. Remove the toner cartridge.
  2. Wipe the gold contacts on the chip with a lint-free cloth.
  3. Inspect the internal pins for any bends.
  4. Reinsert firmly to establish contact.

Prevención y mantenimiento

Keep the internal housing free of toner dust using compressed air.

Cuándo llamar a un técnico

If replacing the cartridge doesn't solve it, the main PCB might have a faulty sensing module.

Ficha técnica del equipo

  • Tech: LED Mono
  • Consumable: 45807102 series
  • Support