Minolta CF910 Manual page 120

Cover the test print with 10 sheets of blank,
8
white A3 or 11" 17" size paper.
Close the Original Cover and press the Start
9
key.
Start
When the copier is through with the
10
Gradation Adjust sequence, the menu screen
reappears.
Repeat steps from
Stop
1134P337CA
1154P412CA
to three times.
4 8
5-13
4. Gradation Adjust