Ricoh Aficio 550
- Code: SC390
- Description: TD sensor error
TD sensor output voltage falls out of the adjustment target (2.5+- 0.1 V) during the Vt check.
Vt-Vtref>0.6V is detected 10 consecutive times even though toner is detected by the toner end sensor.
Vt<0.5 or Vt>4.0 is detected. - Causes: • TD sensor abnormal • BCU board defective
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