Ricoh A250 Service Manual page 186

SERVICE PROGRAM MODE
Mode No.
Class Class
1 and 2 3
Scanner Motor Control
4-910*
DF Shading Interval
Time
4-913*
P - MTF Coefficient
(Text Main 50%~95%)
1
P - MTF Coefficient
2 (Text Main 96%~125%)
P - MTF Coefficient
3 (Text Main 126%~159%)
P - MTF Coefficient
4 (Text Main 160%~200%)
P - MTF Coefficient
5 (Text Sub 50%~95%)
P - MTF Coefficient
(Text Sub 96%~125%)
6
4-915*
P - MTF Coefficient
7 (Text Sub 126%~159%)
P - MTF Coefficient
8 (Text Sub 160%~200%)
P - MTF Coefficient
9 (T/P Main 50%~89%)
P - MTF Coefficient
10 (T/P Main 90%~95%)
P - MTF Coefficient
11 (T/P Main 96%~125%)
P - MTF Coefficient
12 (T/P Main 126%~159%)
A250
Function
Selects the scanner motor control
method.
If "1" is selected, the current for the
scanner motor will be reduced and
jitter copy image problems will be
alleviated. However, copy speed will
be reduced.
Normally do not change the value.
Adjusts the interval for shading
processing in DF mode.
Light and heat may affect the
scanner response. If copy quality
indicates that white level is drifting
during a DF copy job, reduce this
setting. This setting is only effective
when the setting of SP4-950 is
"ADAM".
This adjustment is only effective
for the "Service Mode" original
type setting.
Selects the MTF filter coefficient.
See "Detailed Descriptions - Image
Processing" for details.
T/P: Text/Photo
4-18
Settings
0: Normal
1: Special
0 ~ 60
1 s/step
30 s
0 ~ 15
1/step
1
0 ~ 15
1/step
1
0 ~ 15
1/step
3
0 ~ 15
1/step
4
0 ~ 13
1/step
2
0 ~ 13
1/step
2
0 ~ 13
1/step
3
0 ~ 13
1/step
4
0 ~ 15
1/step
3
0 ~ 15
1/step
3
0 ~ 15
1/step
1
0 ~ 15
1/step
1
SM