Tests and Diagnostics
PORTEGE M780 Maintenance Manual (960-809)
[CONFIDENTIAL]
3-179
3.35.6.6 Hard Disk Test
1) Sequential read
This subtest performs a forward read operation (0 to Maximum) by 63 sectors.
2) Address uniqueness
This subtest writes unique address data to each sector of the HDD track-by-track. The data
written to each sector is then read and compared with the original data. There are three ways
the HDD can be read.
▼
Forward sequential
▼
Reverse sequential
▼
Random
3) Random address / data
This subtest writes random data in a random length to random addresses. This data is then
read and compared to the original data.
4) Cross talk & peak shift
This subtest writes eight types of worst pattern data (listed below) to a cylinder, then reads
the data while moving from cylinder to cylinder. (Test the data interference in the neighbor
track)
Worst pattern data
Cylinder
‘ B5ADAD ‘
0 cylinder
‘ 4A5252 ‘
1 cylinder
‘ EB6DB6 ‘
2 cylinder
‘ 149249 ‘
3 cylinder
‘ 63B63B ‘
4 cylinder
‘ 9C49C4 ‘
5 cylinder
‘ 2DB6DB ‘
6 cylinder
‘ D24924 ‘
7 cylinder
Содержание Portege M780
Страница 11: ...1 Hardware Overview PORTEGE M780 Maintenance Manual 960 809 CONFIDENTIAL 1 1 Chapter 1 Hardware Overview ...
Страница 12: ...1 Hardware Overview 1 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Страница 44: ...Troubleshooting Procedures 2 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 2 ...
Страница 113: ...Tests and Diagnostics PORTEGE M780 Maintenance Manual 960 809 CONFIDENTIAL 3 1 Chapter 3 Tests and Diagnostics ...
Страница 114: ...Tests and Diagnostics 3 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 3 ...
Страница 206: ...Tests and Diagnostics 3 94 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 Advanced menu screen Exit menu screen ...
Страница 304: ... CONFIDENTIAL Chapter 4 Replacement Procedures ...
Страница 305: ...4 Replacement Procedures 4 ii CONFIDENTIAL PORTÉGÉ M780 Maintenance Manual 960 809 4 ...
Страница 415: ... CONFIDENTIAL Appendices ...
Страница 416: ...Appendices App ii CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Страница 436: ...Appendices Appendix A Handling the LCD Module A 6 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Страница 478: ...Appendices Appendix F Wiring diagrams F 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Страница 480: ...Appendices Appendix G BIOS rewrite procedures G 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Страница 482: ...Appendices Appendix H EC KBC rewrite procedures H 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...
Страница 484: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL PORTEGE M780 Maintenance Manual 960 809 ...