Ricoh D017 Service Manual page 458

Standard Vt DFU
Adjusts Vts (Vt for a new PCU). The TD sensor output is adjusted to this
2926*
value during the TD sensor initial setting process. This SP is effective only
when SP2921 is "0", "1", or "2".
[0.00 to 5.00 / 2.50 / 0.05 V/step]
ID Sensor Control
Selects whether the ID sensor is used or not for toner density control.
2927*
[0 = No / 1 = Yes]
If this value is "0", dirty background may occur after the machine has not
been used for a long time.
Toner End Clear
Clears the toner end condition. Press Execute on the touch panel to clear
the toner end condition without adding new toner.
When you press Execute, the following are cleared:
Toner end indicator (goes out)
2928*
Toner near-end counter
Toner near-end level
When making a lot of copies after changing this setting to "1", the carrier
may be attracted to the drum when the toner runs out, which may damage
the drum.
2929* Vref Adjustment
Upper Limit
1
Adjusts the upper limit for Vref. [0.5 to 3.5 / 3.10 / 0.05 V/step]
Lower Limit
2
Adjusts the lower limit for Vref. [0.5 to 3.5 / 1.40 / 0.05 V/step]
SM Appendix 4-25 D017/D018/D019/D020/D084/D085
System SP Tables-2