Ricoh B245-62 Service Training page 59

SP 2001: Charge Roller Bias Adjustment
SP 2001-1 : Adjusts the voltage applied to the
charge roller when printing.
SP 2001-2 : Adjusts the voltage applied to the
charge roller when generating the ID sensor pattern.
Slide 59
SP2001-1: Increasing the (absolute) value will make the output image lighter.
Decreasing it will make the image darker.
SP Modes
59
B245-62 / PD-C4