042-326WorkCentre 7855

Error 042-326 Xerox WorkCentre 7855: Fix Guide

The Xerox WorkCentre 7855 error 042-326 is a warning that the fuser unit is experiencing a thermal discrepancy. As a high-performance device, this 042-326 error on the Xerox WorkCentre 7855 requires care when handling the hot zone of the fuser.

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Common causes

  • 1Fuser thermistor failure.
  • 2Loose connection on fuser power supply cable.
  • 3Severe voltage fluctuations in the power grid.
  • 4Natural wear of fuser rollers after high cycle counts.

Solutions

Diagnóstico rápido

The 042-326 occurs when the thermistor fails to detect the required temperature. If the machine was under high load, this might be a temporary thermal overload.

Solución paso a paso

  1. Power off: Turn off main power and wait 5 minutes to let components cool down.
  2. Inspect fuser: Ensure the fuser unit is correctly seated and free of obstructions.
  3. Restart: Turn on the unit and check if the code disappears during the warm-up phase.

Prevención y mantenimiento

Avoid abrupt power cycles. Keep rear ventilation free of obstacles for proper heat dissipation. Use only genuine consumables.

Cuándo llamar a un técnico

If the issue persists after rebooting, the thermistor or fuser lamps have failed permanently, requiring authorized technical intervention.

Ficha técnica del equipo

  • Technology: Color multifunction laser
  • Print Speed: 50/55 ppm
  • Connectivity: USB, Ethernet, Cloud
  • Paper Capacity: up to 5,140 sheets
  • Compatible Consumable: Xerox WorkCentre 78xx series toner
  • Recommended Use: Corporate production
  • Official drivers / firmware

Steps to follow

  1. 1

    Power off

    Turn off main power and wait 5 minutes.

  2. 2

    Inspect fuser

    Ensure the fuser unit is correctly seated.

  3. 3

    Restart

    Turn on the unit and check if the code is gone.

Frequently asked questions

This signals that the fuser unit temperature did not reach expected operational parameters.

Yes, the device locks to prevent additional damage to the toner fixing system.

Always use genuine toner and certified fuser units to maintain warranty.

Ensure the equipment is connected to a proper voltage regulator to avoid spikes.

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