Ricoh D072 Service Manual page 318

Polygon Idling
2915*
Specifies the polygon mirror motor idling time. The polygon mirror motor
starts its operation when an original is set, a key is pressed, or the platen
2915 1 cover or DF is opened. The motor stops if no manual operation is performed
for the specified time. When you set "0", the motor does not stop while the
copier is in the standby status.
Toner Supply Mode
2921*
[0 = Sensor 1 / 1 = Sensor 2 (DFU)]
2921 1 Selects the toner supply mode. Keep the default setting as long as the TD
sensor is working.
2922* Toner Supply Time
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.
Standard Vt
2926*
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".
2927* ID Sensor Control
Determines whether the ID sensor signal is referenced or not for the toner
2927 1
density control. Keep the default value in usual operations.
SM Appendix
System Service Mode (F/SPF: D068/D069)
[0 = None / 1 = 15 s / 2 = 25 s]
[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]
5-9 D067/D068/D069/D072