Ricoh Aficio 240W Service Manual page 240

SP (SERVICE PROGRAM) MODE TABLES
4905 Line Thickness Mode
019 Sharpen Text
020 Main Scan – Sharpen
Text
021 Sub Scan – Sharpen
Text
022 Line Drawing
023 Main Scan –Drawing
024 Sub Scan –Drawing
4906 Filter/Independent Dot Erase Settings
005 Full Size Mod
Use this to check if magnification operates correctly. Set to 1 to check the main scan
magnification. This setting sets the reproduction ratio to 100%, and the machine
ignores the magnification setting. If the magnification is not 100%, the image
processing circuits could be defective.
007 Image Shift in Magnification DFU
Adjusts the quantity of pixel shift in the main scan direction in the magnification mode.
[0~32767/0/1]
018 Correction Data DFU
Sets the gamma correction mode.
[0~11/0/1]
Filter Settings
These SPs set the MTF (Modulation Transfer Function) filter for each original mode
and magnification ratio. Adjust these SPs if you see very small widths between black
and white areas. When the image is converted to electrical signals, the properties of
the lens can decrease the contrast between adjacent white and black pixels. MTF
adjustments correct this problem.
Note:
When you set a number for the adjustment:
• Lower numbers make the effect of the MTF filter weaker (soft).
• Higher numbers make the effect of the MTF filter stronger (sharp).
• The default setting is the usual setting for that copy mode.
For more, see section 6 (Detailed Section Descriptions).
020 Text 25% - 55.0%
021 Text 55.1% - 75.0%
022 Text 75.1% - 160.0%
023 Text 160.1% - 400.0%
024 Photo 25.0% - 55.0%
025 Photo 55.1 – 75.0%
026 Photo 75.1% - 160.0%
027 Photo 160.1% - 400.0%
028 Text/Photo 25.0% - 55.0%
029 Text/Photo 55.1% - 75.0%
030 Text/Photo 75.1% - 160.0%
031 Text/Photo 160.1% - 400.0%
B125
[0~8/5/1]]
0: Low (better thin line reproduction)
5: Off
8: High (better thick line reproduction)
[0~3/0/1]
0: None 1: Weak 2: Medium 3: Strong
[0~8/4/1]]
0: Low (better thin line reproduction)
5: Off
8: High (better thick line reproduction)
[0~3/2/1]
0: None 1: Weak 2: Medium 3: Strong
[0~3/0/1]
0: None 1: Weak 2: Medium 3: Strong
[0~10/5/1]
[0~6/3/1]
[0~10/5/1]
5-42 SM