Ricoh A230, Service Manual, Page: 231 / 1134

SERVICE PROGRAM MODE
4-22
A230/A231/A232 SM
Mode No.
Class 1
and 2
Class 3
Function Settings
4-902* 9* Gate Signal
Masking This SP mode is for designers only.
Do not change the value. 1
13 Intermittent
Control Mode This SP mode is for designers only.
Do not change the value. 0
4-903 * 2* Filter Mode
Setting Selects the filter combination of the
flare filter and edge filter.
0: Flare off, edge off
1: Flare on, edge off
2: Flare off, edge on
3: Flare on, edge on 0 ~ 3
0
Do not change the value.
5 Full Size Mode Selects whether the copy is always in
full size mode even if the magnification
ratio has been changed. 0: Normal
operation
1: Always full
size mode
Set to 1 when checking the
magnification in the main scan
direction. If the magnification is not
100%, something is wrong with the
image processing circuits.
7 Image Shift in
Magnification
Mode Adjusts the pixel shift amount in the
main scan direction in magnification
mode. 0 ~ 5120
1/step
0
This SP mode is for designer use
only.
10* 25%/50%
Reduction in Fax
Mode Selects whether the 25% and 50%
reduction in fax mode is available or
not.
0: Available
1: Not
available
Do not change the setting.
11* MTF Filter
Coefficient Level
(25% ~ 64%) Selects the MTF filter coefficient for
25% ~ 64% reduction for letter mode
using greyscale processing.
Weak Strong
11–8–2–1–9–0–5–4–10–7–3–6 0 ~ 11
1/step
7
12* MTF Filter
Coefficient Level
(65% ~ 154%) Selects the MTF filter coefficient for
65% ~ 154% magnification for letter
mode using greyscale processing.
Weak Strong
11–8–2–1–9–0–5–4–10–7–3–6 0 ~ 11
1/step
6
13* MTF Filter
Coefficient Level
(155% ~ 256%) Selects the MTF filter coefficient for
155% ~ 256% enlargement for letter
mode using greyscale processing.
Weak Strong
11–8–2–1–9–0–5–4–10–7–3–6 0 ~ 11
1/step
10