Toner Supply If Sensor Reading Is Abnormal - Ricoh S-C3 F Service Manual

Vref is calculated based on:
• ID sensor output (Vsp/Vsg)
• Existing reference voltage (Vref or Vts) – Vt
Toner Supply Determination
The machine supplies toner if Vt exceeds the reference voltage.
• Current Vt and reference voltage values can be viewed using SP2-220. Other ID sensor values can
be viewed using SP2-221.
Toner Clutch ON Time
Calculation is based on:
• Vt
• Reference voltage RV (= Vref or Vts)
• S (TD sensor's sensitivity coefficient)
Level
RV < Vt ≤ RV + S/16
1
RV + S/16 < Vt ≤ RV + S/8
2
RV + S/8 < Vt ≤ RV + S/4
3
RV + S/4 < Vt ≤ RV + S/2
4
RV + S/2 < Vt ≤ RV + 4S/5
5
RV + S > Vt ≥ RV + 4S/5
6
Vt ≥ RV + S
7
• The default value for t is 0.6. The value can be changed using SP2-922.

Toner Supply If Sensor Reading is abnormal

ID Sensor
Any of the following is considered abnormal:
• Vsg ≤ 1.65 (when Vsg is read)
Decision
Development
Motor On Time (seconds)
t
1.5t
2t
3t
4t
5t
6t
6
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