Ricoh D146 Service Manual page 1171

Main SP Tables - 4
Dust Detect:Lvl
002
Sets DF Dust Detect Level. Easier to Detect as Value increases.
4020 [Dust Check Lvl]
Dust Reject:Lvl
003
Sets ON/OFF and switches level of Vertical stripes correction. 0=OFF, sets level
to 1 from 4. Stronger correction as value increases.
4020 [DF Dust Check]
Dust Detect Level:Rear
011
Sets ON/OFF DF: Rear dust detection setting.
Correction Level:Rear
012
Sets DF: Rear dust detection level. As the value enlarges, easier to detect.
4201 [LoCPP edge level:K]
600dpi 2bit edge1
001
Upper limit threshold parameter for smaller edge: 600dpi 2bit
D146/D147/D148/D149/D150
[0 to 8 / 4 / 1/step]
*ENG 0: lowest detection level
8: highest detection level
*ENG [0 to 4 / 0 / 1/step]
[0 or 1 / 0 / 1/step]
*ENG
0: OFF, 1: ON
[0 to 8 / 4 / 1/step]
*ENG 0:Lowest level
8:Highest level
[0 to 15 / 11 / 1/step]
Value increase: Tonner adhesion
amount will increase for Bk picture
*ENG edge.
Toner decrease: Toner adhesion
amount will decrease for Bk picture
edge.
2-452 System Maintenance Section