Development
SM 6-43 D017/D018/D019/D020
Detailed
Descriptions
Mode Sensor control 2 (SP2-921, “1”): DFU
Toner supply decision Compare Vt with a reference voltage (Vts or Vref)
Toner control process
This toner control process is the same as sensor control 1
mode. However, the reference voltage is always the same as
Vref.
Toner supply amount Varies
Toner end detection Performed
Mode Fixed control 1 (SP2-921, “2”): DFU
Toner supply decision Compare Vt with a reference voltage (Vts or Vref)
Toner control process
This toner control process is the same as sensor control 1
mode.
Toner supply amount Fixed (SP2-925)
Toner end detection Performed
Mode
Fixed control 2 (SP2-921, “3”):
Use temporarily if the TD sensor needs to be replaced
Toner supply decision None
Toner control process Toner is supplied every printed page regardless of Vt.
Toner supply amount Fixed (SP2-925)
Toner end detection Not performed
Mode Sensor control 3 (SP921, "4". DFU
Toner supply decision Compare Vt with a reference voltage (Vts)
Toner control process
This toner control process is the same as sensor control 1
mode. However, the reference voltage used is always Vts.
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