If uneven color issues with white ink are not resolved even after shaking the ink cartridges to mix the ink, perform "ink circulation." Uneven colors refers to the symptom of printed colors being uneven (such as the color density being inconsistent) even when the same data is printed with the same settings.
Press MENU.
Press ▼ several times to display the screen shown below.
Press ▶ once, and then press ▼ several times to display the screen shown below.
Press ▶ once, and then press ▼ several times to display the screen shown below.
Press ENTER.
The screen shown below appears, and then the ink circulation starts. The (approximate) remaining time for the procedure is displayed on the screen. (The display shown below is an example. "01:45" = "1 minute and 45 seconds")