Ricoh D131 Service Manual page 606

2803 Charge Cleaner Start Time
Press EXECUTE button to clean the charge corona wire manually.
1
When copy density across the paper is uneven, clean the wire with this mode.
2804 Charge Cleaner
1 Operation Mode
Determines whether the charge corona wire is cleaned at regular intervals.
[0 to 1/1]
0: No
1: Yes
The time interval between cleaning is set with SP2804-002.
2 Number of Sheets
Sets the interval (number of sheets printed) between charge corona wire
cleanings.
[100 to 10,000/5000/100]
2901 Humidity Control
0: OFF 1:ON
1
[0 or 1/ 0 / -]
Humidity Thresh: Trans. Bias
2
[0 to 100 / 70 / 1%]
2902 Test Pattern Printing
Test Pattern
Produces the printer test patterns. (See "Test Pattern Printing" in the Main
Chapters.)
[0 to 26 / 0 / 1]
SM Appendix 3-31
SP2000 Drum
D131/D132/D133