Ricoh A229 Service Manual page 253

SERVICE PROGRAM MODE
Mode No.
(Class 1 , 2 & & & & 3)
4-901 SBU Adjustment
16 Time Out Flag
17 Error Flag
White Level
18
Data
4-903 Filter Setting
2 Filter Mode
Setting
5 Full Size
Mode
7 Image Shift in
Magnification
Mode
11 Filter Level
(25% ~ 64%)
Filter Level
12
(65% ~ 154%)
Filter Level
13
(155% ~ 256%)
14 Filter Level
(257% ~ 400%)
A229
Function
Checks the time out flag data during the
automatic scanner adjustment.
This SP mode is for designer use only.
Checks the error flag data during the
automatic scanner adjustment.
This SP mode is for designer use only.
Checks either the maximum or minimum
white shading data.
This SP mode is for designer use only.
* This SP mode is designer use only.
Do not change the value.
Selects whether the copy is always in full
size mode even if the magnification ratio
has been changed.
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.
Adjusts the pixel shift amount in the main
scan direction in magnification mode.
This SP mode is for designer use only.
* Selects the MTF filter coefficient in the main
scan direction for 25% ~ 64% reduction for
text mode.
0:Weak 6:Strong
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Selects the MTF filter coefficient in the main
scan direction for 65% ~ 154%
magnification for text mode.
0:Weak 6:Strong
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Selects the MTF filter coefficient in the main
scan direction for 155% ~ 256%
enlargement for text mode.
0:Weak 6:Strong
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Selects the MTF filter coefficient in the main
scan direction for 257% ~ 400%
enlargement for text mode.
0:Weak 6:Strong
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
4-24
Settings
TIME
OUT/SGDO
= 0000
GAIN/OET =
000
REF/OT=00
0: Maximum
1: Minimum
0 ~ 3
0
0: Normal
operation
1: Always full
size mode
0 ~ 5120
1/step
0
0 ~ 6
1/step
1
0 ~ 6
1/step
2
0 ~ 6
1/step
5
0 ~ 6
1/step
6
SM