Service manual

System Service Mode
SM Appendix 3-21 D127/D128
Appendix:
SP Mode
Tables
2926* Standard Vt [0.00 to 5.00 / 2.4 / 0.05 V/step] DFU
2926 1
Adjusts Vts (the Vt value for new developer). The TD sensor output is
adjusted to this value during the TD sensor initial setting process.
2927* ID Sensor Control [0 = No / 1 = Yes]
2927 1
Determines whether the ID sensor signal is referenced or not for the toner
density control. Keep the default value in usual operations.
2928 Toner End Clear
2928 1
Clears the following messages and counters without supplying the toner:
 Toner near end message
 Toner end message
 Copies After Toner Near End Counter (SP2-224-001)
Do not use this SP in usual operations. When the toner in the development
unit is abnormally insufficient, the drum may attract the toner carrier to its
surface. The toner carrier damages the drum surface.
2929* Vref Adjustment Adjust the upper or lower Vref limit.
2929 1 Upper Limit [0.50 to 3.50 / 2.40 / 0.05 V/step] DFU
2929 2 Lower Limit [0.50 to 3.50 / 0.50 / 0.05 V/step] DFU
2930* TD Sensor Manual Setting [0.00 to 5.00 / 0.00 / 0.05 V/step]
2930 1
Inputs Vtref directly.
“SP2-926-001” becomes invalid when this value is set.
2931* TD (V/wt%) Setting [0.01 to 1.50 / 0.40 / 0.01 /step]
2931 1
Adjusts the timing of toner supplying. The more frequently toner is supplied
under the smaller value. DO NOT use this SP in usual operations.