Toshiba Satellite L20 Series Maintenance Manual page 112

Subtest 12 Color Tiling
This subtest displays black, gray, white, and 3 gradations of red, green, and
blue as shown in the following display.
To exit this subtest and return to the Display Test menu:
Press Enter if NO was selected for Test Loop on the Test Parameter Menu.
Press Ctrl + break if YES was selected for Test Loop on the Test Parameter
Menu.
112
Black Red
Gray Red
Gradation
White Red
Gradation
Test Program for Field.
Green
Green
Gradation Gradation
Green
Gradation Gradation
Satellite L20 Maintenance Manual(960-Q01)
Blue
Blue
Blue