Ricoh A250 Service Manual page 193

Mode No.
Class Class
1 and 2 3
P - IPU ADS Adjustment
1
(Text)
P - IPU ADS Adjustment
2
(Text/Photo)
P - IPU ADS Adjustment
(Photo)
4-938*
3
P - Binary Filter
4-939*
P - ID Gamma
Adjustment (Text)
1
P - ID Gamma
Adjustment (Text/Photo)
2
4-940*
P - ID Gamma
Adjustment (Photo)
3
P - Positive/Negative
1
(Text)
P - Positive/Negative
4-941* 2
(Text/Photo)
P - Positive/Negative
3
(Photo)
SM
SERVICE PROGRAM MODE
Function
This adjustment is only effective
for the "Service Mode" original
type setting.
Decides how much is subtracted
from the white video level. In SP4-
937, if "By key" is selected and the
user selects ADS mode, or if "ON" is
selected, this value is subtracted
from the white video level.
See "Detailed Description - Image
Processing" for details.
Normally do not change the value.
Selects the binary filter for the
independent dot erase that is done
after image processing in text mode.
This adjustment is only effective
for the "Service Mode" original
type setting for text mode.
If "0" is selected this mode is
disabled. See "Detailed Descriptions
- Image Processing" for details.
Selects the ID gamma curve.
This adjustment is only effective
for the "Service Mode" original
type setting.
See "Detailed Descriptions - Image
Processing" for details.
Normally do not change the value.
Selects the ID gamma curve for error
diffusion.
This adjustment is only effective
for the "Service Mode" original
type setting. See "Detailed
Descriptions - Image Processing" for
details.
Normally do not change the value.
Selects the ID gamma curve for
dithering.
This adjustment is only effective
for the "Service Mode" original
type setting. See "Detailed
Descriptions - Image Processing" for
details.
Normally do not change the value.
This is for the designer's test
purposes.
Do not change the value.
4-25
Settings
0 ~ 15
1/step
8
0: Non
1: 3 x 3
2: 4 x 4
3: 5 x 5
0: B&W
(Sharp text)
1: Linear
(Normal text)
1: Norm (Text)
2: ch
(Text Priority)
3: ph
(Photo
Priority)
4: ph2
(Glossy
Photo)
5: 53
(Coarse Print)
6: 105
(Press Print)
0: No
1: Yes
A250