Ricon B156, Service Manual

Page: 179 / 781

COLOR ADJUSTMENT
SM 3-67 B156/B220
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Adjustment Procedure
1. Copy the C-4 chart in mode that you are going to adjust.
2. Enter the SP mode.
3. Select “Copy SP”.
4. Enter SP4-918 and select the screen that you are going to adjust.
5. Adjust the offset values until the copy quality conforms to the standard (
the
tables below).
NOTE: 1) Never change an “Option” value (default value is 0).
2) Adjust the density in order from “ID Max”, “Middle (M)”, “Shadow (S)”,
and then “Highlight (H)”.
- Photo Mode, Full Colour -
Step Item to Adjust Level on the C-4 chart Adjustment Standard
1
ID max:
(K, C, M, and Y) Adjust the offset value so that
the density of level 10 matches
that of level 10 on the C-4 chart.
2
Middle (Middle ID)
(K, C, M, and Y) Adjust the offset value so that
the density of level 6 matches
that of level 6 on the C-4 chart.
3
Shadow (High ID)
(K, C, M, and Y) Adjust the offset value so that
the density of level 8 matches
that of level 8 on the C-4 chart.
4
Highlight (Low ID)
(K, C, M, and Y) Adjust the offset value so that
dirty background is not visible on
the copy and the density of level
3 is slightly lighter that of level 3
on the C-4 chart.
5
K Highlight (Low ID)
(C,M, and Y)
<on the full color
copy> Adjust the offset value so that
the color balance of black scale
levels 3 through 5 in the copy is
seen as gray (no C, M, or Y
should be visible). If the black
scale contains C, M, or Y, redo
step 1 to 4.