Ricoh D009 Service Manual page 339

SP4-xxx: Scanner-1
[0 to 255 / 128 / 1 digit]
Displays the black offset value (fine adjustment) for the even blue signal in the
SBU (black and white printing speed).
Latest: BO B/W
008 [0 to 255 / 128 / 1 digit]
Displays the black offset value (fine adjustment) for the odd blue signal in the
SBU (black and white printing speed).
BE: Blue Even signal, BO: Blue Odd signal
SM 5-53 D009/D011/D012/D013