Ricoh D009 Service Manual page 321

A smaller value allows a wider range of halftones at the dark end of the
scale.
Grayscale Cycle (SSP)
Set s the halftone operation interval in order to prevent deterioration of the
2973*
OPC. If the number of copies exceeds this setting, at the end of the job, or if
the door is opened and closed, charge correction is executed.
2974* Image Density
Adjustment Mode
001
Adjusts image density. Changing this setting adjusts development bias and
ID sensor output voltage that in turn raises or lowers image density.
Near End Setting
Detection Time
Sets a time for toner supply motor rotation for issuing the toner near end
2975*
warning on the operation panel. The time may need to be shorter for
customers who run especially large print jobs (working at night, for example)
to ensure earlier warning of the toner near end condition so toner out does
not interrupt a long job.
Bottle Motor Time
Displays the total ON time of the toner supply motor, calculated from when
the toner bottle was replaced. Use this to check that the toner end count
(SP2975) is working properly.
2976*
When SP2975 is set to any value other than "0", this value is displayed
when it matches the setting of SP2975. When SP2975 is set to "0", SP2976
is disabled. SP2976 is automatically set to zero by toner end recovery.)
Time
SM
[0 to 1000 / 100 / 10 sheets ]
[1 to 5 / 3 / 1 ]
[0 to 2000 / 0 / 10 sec ]
[0 to 7,000,000 / 0 / 1 msec]
5-35
SP2-xxx: Drum-3
D009/D011/D012/D013