Tests and Diagnostics
3-24
[CONFIDENTIAL]
PORTEGE M780 Maintenance Manual (960-809)
3.9 Display Test
To execute the Display Test, select
4
from the DIAGNOSTIC TEST MENU, press
Enter
and follow the directions on the screen. 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 (AAAAh and 5555h) 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. Each color displays for
three seconds.
Summary of Contents for Portege M780
Page 12: ...1 Hardware Overview 1 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Page 44: ...Troubleshooting Procedures 2 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 2 ...
Page 114: ...Tests and Diagnostics 3 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 3 ...
Page 304: ... CONFIDENTIAL Chapter 4 Replacement Procedures ...
Page 305: ...4 Replacement Procedures 4 ii CONFIDENTIAL PORTÉGÉ M780 Maintenance Manual 960 809 4 ...
Page 415: ... CONFIDENTIAL Appendices ...
Page 416: ...Appendices App ii CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Page 484: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...