Ricoh IS2022, Service Manual, Page: 191 / 313

SERVICE PROGRAM MODE 10 August, 2001
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Mode Number/Name Function/[Setting]
SBU Adjustment
1* Gain - EVEN Checks the difference value of the black level for the
EVEN channel after adjusting the black level at power-
up.
DFU
However, after doing a memory all clear (SP5-801),
use it to re-input the previous value.
[0 ~ 255 / 40 / 1/step]
2* Gain - ODD Checks the difference value of the black level for the
ODD channel after adjusting the black level at power-
up.
DFU .
However, after doing a memory all clear (SP5-801),
use it to re-input the previous value.
[0 ~ 255 / 40 / 1/step]
901
3 DC Cont - EVEN Adjusts the coefficient of the D/A converter for the
AGC gain curve for DC cont for the EVEN channel.
DFU
However, after doing a memory all clear (SP5-801),
use it to re-input the previous value.
[0 ~255 / 25 / 1/step]
4 DC Cont - ODD Adjusts the coefficient of the D/A converter for the
AGC gain curve for DC cont for the ODD channel.
DFU.
However, after doing a memory all clear (SP5-801),
use it to re-input the previous value.
[0 ~255 / 25 / 1/step]
901
7 Current Value Adjusts the coefficient of the D/A converter for the
AGC gain curve for scanning the white plate.
DFU .
[0 ~255 / 147 / 1/step]
Exposure Lamp ON 902
Turns on the exposure lamp.
Press ON on the touch panel to turn on the lamp.
Press OFF to turn off the lamp
.
Image Quality Adjustment
1 Text : 25% ~ 34% This adjustment is only effective for the “Custom
Setting” original type.
Adjusts the image quality in Text mode.
A larger number increases contrast and sharpens the
image but moiré may appear.
A smaller number reduces contrast and moiré but the
line may become narrower.
[0 ~ 10 / 4 / 1 step]
2 Text : 35% ~ 66% [0 ~ 10 / 3 / 1 step]
3 Text : 67% ~ 141% [0 ~ 10 / 4 / 1/step]
4 Text : 142% ~ 400% [0 ~ 10 / 4 / 1/step]
903*
5 Photo : 25% ~ 34% This adjustment is only effective for the “Custom
Setting” original type.
Adjusts the image quality in Photo mode.
0 ~ 6 are for a glossy photo image (error diffusion)
7 ~ 20 are for a printed photo image (dithering)
If copy quality is not satisfactory, try another setting
(trial and error)
[0 ~ 20 / 11 / 1/step]