Service manual

System Service Mode
D127/D128 3-28 SM Appendix
4450 Scan Image Pass Selection [0 or 1 / 0]
4450 1 Black Subtraction ON/OFF
4450 2 SH ON/OFF
4460 Digital AE
4460 1
Low Limit Value [0 to 1023 / 364 / 1 /step]
The threshold value detected on platen sheet check. The larger (lighter)
value area on scanned image than this SP’s value is detected as white sheet
area (background).
4460 2 Background level [512 to 1535 / 932 / 1 /step]
4550 Scan Apli:Txt/Print
These SPs have the same lower
level settings as below.
4551* Scan Application: Txt
4552* Scan Application: Txt Dropout
4553* Scan Application: Txt/Photo
4554* Scan Application: Photo
4565* Scan Application: GrayScale
4570* Scan Application: Color Txt/Photo
4571* Scan Application: Color Gloss Photo
4572* Scan Application: AutoColor
005 MTF
[0 to 15 / 8 / 1 /step]
0= (Off)
1 – 15= (Weak – Strong)
006 Smoothing
[0 to 7/ 4 / 1 /step]
0= (x1)
1 – 7= (Weak – Strong)
007 Brightness [1 to 255 / 128 / 1 /step]