Toshiba PORTEGE R200 Maintenance Manual page 137

3.13 Hard Disk Test
Subtest 04
Subtest 05
Subtest 06
Subtest 07
Subtest 08
Subtest 09
PORTEGE R200 Maintenance Manual (960-519)
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Cross talk & peak shift
This subtest writes eight types of worst pattern data (listed below) to a
cylinder and then reads the data while moving from cylinder to cylinder.
(Tests the data interference in the neighbor track.)
Worst pattern data
'B5ADAD'
'4A5252'
'EB6DB6'
'149249'
'63B63B'
'9C49C4'
'2DB6DB'
'D24924'
Partial Read
This subtest reads 1GB data which is in minimum, middle and maximum
address of the HDD area.
Write specified address
This subtest writes specified data to a specified cylinder and head on the
HDD.
Read specified address
This subtest reads data, which has been written to a specified cylinder and
head on the HDD.
Sequential write
This subtest writes specified 2-byte data to all of the cylinders on the HDD.
W-R-C specified address
This subtest writes data to a specified cylinder and head on the HDD, then
reads the data and compares it to the original data.
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3 Tests and Diagnostics
Cylinder
0 cylinder
1 cylinder
2 cylinder
3 cylinder
4 cylinder
5 cylinder
6 cylinder
7 cylinder
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