Ricoh Aficio MP201SPF Service Manual page 281

Toner Supply Time
2922*
Adjusts the toner supply time. The toner supply motor remains on for the
specified time. To validate this setting, select "0" in SP2-921-001. Specify a
2922 1
greater value if the user tends to make many copies having high proportions
of solid black image areas.
2926* Standard Vt
Adjusts Vts (the Vt value for new developer). The TD sensor output is
2926 1 adjusted to this value during the TD sensor initial setting process. This SP is
effective only when SP2-921001 is "0", "1", or "2".
ID Sensor Control
2927*
Determines whether the ID sensor signal is referenced or not for the toner
2927 1
density control. Keep the default value in usual operations.
Toner End Clear
2928
Clears the following messages and counters without supplying the toner:
Toner near end message
Toner end message
Toner near end counter
2928 1
Toner end counter
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 Limits
2929 1 Upper
2929 2 Lower
SM Appendix
[0.1 to 5.0 / 0.6 / 0.1 s/step]
[0.00 to 5.00 / 2.50 / 0.01 V/step] DFU
[0 = No / 1 = Yes]
Adjust the upper or lower Vref limit.
[0.50 to 3.50 / 3.20 / 0.01V/step] DFU
[0.50 to 3.50 / 0.70 / 0.01V/step] DFU
3-9
System Service Mode
D115/D116