To reproduce stable colors with the machine, use pre-output image quality adjustment.
Understand the image adjustment flow (which timing, which image quality adjustment, in what order), and then make adjustment as needed.
If the Integrated Color Care Unit IQ-501 is mounted, you can adjust the colors or check if they become closer to the target colors.
Image Quality Adjustment Flow of Image Controller IC-603
Image Quality Adjustment Flow of Image Controller IC-417 or Image Controller IC-313
Screen Selection (Adjustment Flow When Changing the Screen)
Density Balance Adjustment (Adjustment Flow When Changing the Screen)
Maximum Density Adjustment (Regular Adjustment Flow (High Accuracy))