User Guide

3 chTests and Diagnostics 3.8 Display Test
3.8 Display Test
To execute the Display Test, select 4 from the DIAGNOSTIC TEST MENU, press Enter
and follow the directions on the screen. The Display test contains subtests that test the
display in various modes. Move the highlight bar to the subtest you want to execute and
press Enter.
Subtest 01 VRAM Read/Write for VGA
This subtest writes the constant data (AAh and 55h) and the address data
to the video RAM. The data is read and compared to the original data.
Subtest 02 Gradation for VGA
This subtest displays four colors: red, green, blue and white from left to
right across the screen from black to maximum brightness. The display
below appears on the screen when this subtest is executed.
To exit this subtest and return to the DISPLAY TEST menu, press Enter.
Subtest 03 Gradation for LCD
This subtest displays bands of gradations for mixed colors, then for red,
green, and blue. Next, it displays eight solid colors full screen: red, semi-
red, green, semi-green, blue, semi-blue, white, and semi-white. The
display of each color switches automatically every three seconds.
3-20 Satellite A50/TECRA A2 Maintenance Manual (960-478)