Ricoh Russian-C2a Service Manual page 191

SERVICE PROGRAM MODE
4
Mode Number/Name
901 SBU Adjustment
1* Gain - EVEN
2* Gain - ODD
3 DC Cont - EVEN
901 4 DC Cont - ODD
7 Current Value
902 Exposure Lamp ON
903* Image Quality Adjustment
1 Text : 25% ~ 34%
2 Text : 35% ~ 66%
3 Text : 67% ~ 141%
4 Text : 142% ~ 400%
5 Photo : 25% ~ 34%
Function/[Setting]
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]
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]
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]
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]
Adjusts the coefficient of the D/A converter for the
AGC gain curve for scanning the white plate.
DFU.
[0 ~255 / 147 / 1/step]
Turns on the exposure lamp.
Press ON on the touch panel to turn on the lamp.
Press OFF to turn off the
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]
[0 ~ 10 / 3 / 1 step]
[0 ~ 10 / 4 / 1/step]
[0 ~ 10 / 4 / 1/step]
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]
4-28
10 August, 2001
lamp.