Toshiba Satellite A40 Series Maintenance Manual page 147

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.
3-26
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)