Toshiba Satellite A40 Maintenance Manual page 152

3 Tests and Diagnostics
Subtest 04 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)
Subtest 05 Partial read
This subtest reads 1GB data just before the first, middle and maximum of the HDD
filed.
Subtest 06 Write specified address
This subtest writes specified data to a specified cylinder and head on the HDD.
3-28
Worst pattern data
'B5ADAD'
'4A5252'
'EB6DB6'
'149249'
'63B63B'
'9C49C4'
'2DB6DB'
'D24924'
1GB
T&D Test Area
1GB
T&D Test Area
1GB
T&D Test Area
3.10 Hard Disk Test
Cylinder
0 cylinder
1 cylinder
2 cylinder
3 cylinder
4 cylinder
5 cylinder
6 cylinder
7 cylinder
Satellite A40 Maintenance Manual (960-458)