3 Tests and Diagnostics 3.10 Hard Disk Test
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)
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
Subtest 05 Partial read
This subtest reads 1GB data just before the first, middle and maximum of the
HDD filed.
T&D Test Area
1GB
T&D Test Area
1GB
T&D Test Area
1GB
Subtest 06 Write specified address
This subtest writes specified data to a specified cylinder and head on the
HDD.
3-26 Satellite A40 Maintenance Manual (960-458)
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