Ricoh B089 Service Manual page 246

SERVICE PROGRAM MODE
4901 SBU Adjustment
4901 1 Gain – Even DFU
Checks the difference value of the black level for the EVEN channel after adjusting
the black level at power-up. However, after doing a memory all clear (SP5801),
use it to re-input the previous value.
[0 ~ 255 / 40 / 1/step]
4901 2 Gain – Odd DFU
Checks the difference value of the black level for the ODD channel after adjusting
the black level at power-up.. However, after doing a memory all clear (SP5801),
use it to re-input the previous value.
[0 ~ 255 / 40 / 1/step]
4901 3 DC Cont – Even DFU
Adjusts the coefficient of the D/A converter for the AGC gain curve for DC cont for
the EVEN channel. However, after doing a memory all clear (SP5801), use it to
re-input the previous value.
[0 ~255 / 25 / 1/step]
4901 4 DC Cont – Odd DFU
Adjusts the coefficient of the D/A converter for the AGC gain curve for DC cont for
the ODD channel. However, after doing a memory all clear (SP5801), use it to re-
input the previous value.
[0 ~255 / 25 / 1/step]
4901 7 Ref. Cont DFU
Adjusts the coefficient of the D/A converter for the AGC gain curve for scanning
the white plate.
[0 ~255 / 147 / 1/step]
4902 Exposure Lamp ON
Turns on the exposure lamp.
Press ON on the touch panel to turn on the lamp. Press OFF to turn off the lamp.
B089/B093 4-30 SM