Ricoh G147 Service Manual page 209

[20 ~ 100 μA / 60 / 1 μA step]
2309* Trans Curr Corr
01 a (Paper Lower Width)
Adjusts the lower paper width threshold for the transfer current, charge voltage,
and development bias corrections. DFU
Use this SP when an image problem (e.g., insufficient toner transfer) occurs with a
small width paper. If the paper width is smaller than this value, the transfer current
will be multiplied by the factor in SP2309-03 (paper tray) or SP2309-05 (by-pass).
[0 ~ 297 / 150 / 1 mm step]
02 b (Paper Upper Width)
Adjusts the upper paper width threshold for the transfer current, charge voltage,
and development bias corrections. DFU
As for SP2309-01, but the factors are in SP2309-04 (paper tray) and SP2309-06
(by-pass).
[0 ~ 297 / 216 / 1 mm step]
03 Alpha (Tray)
Adjusts the transfer current correction coefficient used if the paper width is less
than the setting of SP2309-01. DFU
[1.0 ~ 3.0 / 1.2 / 0.1 mm step]
04 Beta (Tray)
Adjusts the transfer current correction coefficient used if the paper width is less
than the setting of SP2309-02. DFU
[1.0 ~ 3 / 1.2 / 0.1 mm step]
05 Gamma (By-pass)
Adjusts the transfer current correction coefficient used if the paper width is less
than the setting of SP2309-01. DFU
[1.0 ~ 3 / 1.5 / 0.1 mm step]
06 Delta (By-pass)
SM
Transfer Current Correction
5-19 G147