sc544MP 2001L

Ricoh MP 2001L SC544 Error: Thermistor Fix

The Ricoh MP 2001L error SC544 is a service code indicating a temperature anomaly in the fuser unit. The machine stops to prevent potential fire or roller damage. Read our guide for professional diagnostic steps.

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Common causes

  • 1Faulty or open thermistor.
  • 2Burnt-out heating lamp.
  • 3Fuser power supply failure.
  • 4Toner buildup on the sensor surface.

Solutions

Quick Diagnosis

This error is a lockout for safety. If it stays on the screen after rebooting, the thermistor is likely failing to sense the heating lamp correctly.

Step-by-Step Solution

  1. Enter Service Mode (SP) with the correct key combination.
  2. Inspect the fuser unit for burnt or loose wires.
  3. Reset the SC code through the SP service menu.
  4. Verify operation once the system resets and warms up.

Prevention and Maintenance

Keep the fuser unit clean. Dust buildup can trap heat or prevent proper sensor contact.

When to Call a Technician

If the reset code fails, or if you hear a grinding noise, the fuser unit may need a professional internal rebuild.

Technical Specifications

  • Technology: Monochrome Laser Copier
  • Speed: 20 ppm
  • Connectivity: USB, LAN
  • Compatible Consumables: MP 2001 series toner
  • Recommended Use: Small Office
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Access SP mode

    Enter the service mode to clear the stored fault code.

  2. 2

    Check fuser

    Visually inspect the fuser unit thermistor for physical damage.

  3. 3

    Reset SC

    Use the SP command to reset the error once the fuser has cooled.

Frequently asked questions

It signals a temperature error within the fusing unit, typically a sensor fault.

It can be; if the fuser overheats, the rollers and gears may sustain permanent damage.

It uses the MP 2001 series toner and specific service kits.

Ensure appropriate paper usage and keep the fuser area clean from dust.