Panasonic KX-MC6020 Operating Instructions Manual page 60

9. Programmable Features
Feature/Code
Changing the color
calibration for magenta color
{#}{4}{8}{7}
Changing the color
calibration for yellow color
{#}{4}{8}{8}
Changing the color
calibration for black color
{#}{4}{8}{9}
60
Selection
Change the color calibration if color printing is too dark or too light. See page 76
for details.
Change the color calibration if color printing is too dark or too light. See page 76
for details.
Change the color calibration if color printing is too dark or too light. See page 76
for details.