sc551mp-173

Ricoh MP 173 SC551 Error: Troubleshooting

The Ricoh MP 173 error SC551 means the fuser unit reached an dangerously high temperature. Why does my Ricoh MP 173 show error SC551? Usually a thermistor short or power board triac failure.

0 views

Common causes

  • 1Short thermistor
  • 2Board triac fault
  • 3Safety trip
  • 4Blocked airflow

Solutions

Diagnóstico rápido

Device locked at start.

Solución paso a paso

  1. Power off. 2. Inspect fuser. 3. Reset SP mode.

Prevención y mantenimiento

Replace fuser kit.

Cuándo llamar a un técnico

Mandatory safety check.

Ficha técnica del equipo

Tech: Laser, Toner: 1270. Drivers here.

Frequently asked questions

Overheating detected.

Safety risk.

1270 cartridge.

Annual check.