Ricoh Aficio MP201SPF Service Manual page 295

White Line Erase
4941*
Selects the white line erase level.
0: None,
This setting is effective for all modes.
4941 1 0: White line erase is not used, and white level correction is used
instead.
This setting is applied regardless of what mode has been selected in
SP4-921.
4942* Black Line Erase
Selects the black line erase level. This setting is effective only when originals
are scanned by the DF.
4942 1 [0 = No / 1 = Very weak / 2 = Weak / 3 = Strong]
This setting is applied regardless of what mode has been selected in
SP4-921.
4943* WhitePapDetect BiLv
4943 1 Gray Scale
4943 1 Color2
4943 1 Color3
SM Appendix
[0 to 2 / 1 / 1/step]
1: Weak, 2: Strong
[0 to 3 / 2 / 1/step]
3-23
[0 to 255 / 64 / 1/step]
[0 to 255 / 128 / 1/step]
[0 to 255 / 128 / 1/step]
System Service Mode
D115/D116