Canon imageRUNNER ADVANCE C255 Series, Service Manual, Page: 700 / 987

COPIER (Service mode for copier) > ADJUST (Adjustment mode) > MISC
ACS-EN3 2 Set of ACS mode jdgmt area: back side
Detail To set the judgment area in ACS mode (back side at duplex reading with 1 path).
As the greater value is set, the judgment area is widened.
Use Case When adjusting the judgment area in ACS mode (back side at duplex reading with 1 path)
Adj/Set/Operate Method 1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
Display/Adj/Set Range -2 to 2
Default Value 1
ACS-CNT3 2 ACS mode jdgmt pixel count area: back
Detail To set the area which counts the pixel to judge the color presence in ACS mode (back side at
duplex reading with 1 path).
As the greater value is set, the judgment area is widen.
Use Case
When adjusting the area which counts the pixel to judge the color presence in ACS mode (back
side at duplex reading with 1 path)
Adj/Set/Operate Method
1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
Display/Adj/Set Range
-2 to 2
Default Value
0
SH-ADJ 1 Adj of sharpness: Copyboard, DADF front
Detail To adjust the sharpness of image in copyboard reading mode and image on the front side in duplex
stream reading mode that is set in Settings/Registration menu.
As the value is larger, the image gets sharper. If the value is too large, moire is likely to occur in
an output image of COPY and SEND.
To match the image quality with that of the back side in the duplex stream reading mode, decrease
the value when moire on the front side is stronger than the back side and increase the value when
it is weaker.
Use Case When moire frequently occurs on images of COPY and SEND output
Adj/Set/Operate Method 1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
Display/Adj/Set Range -3 to 3
Default Value 0
Related Service Mode COPIER> ADJUST> MISC> SH-ADJ2
SH-ADJ2 1 Adjustment of sharpness: DADF back side
Detail To adjust the sharpness of image on the back side in duplex stream reading mode that is set in
Settings/Registration menu.
As the value is larger, the image gets sharper. If the value is too large, moire is likely to occur in
an output image of COPY and SEND.
To match the image quality with that of the front side in the duplex stream reading mode, decrease
the value when moire on the front side is stronger than the back side, and increase the value when
it is weaker.
Use Case When moire frequently occurs on images of COPY and SEND output
Adj/Set/Operate Method
1) Enter the setting value (switch negative/positive by -/+ key) and press OK key.
2) Turn OFF/ON the main power switch.
Display/Adj/Set Range
-3 to 3
Default Value
0
Related Service Mode
COPIER> ADJUST> MISC> SH-ADJ
8. Service Mode
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