Subtest 04 - Toshiba T3400 Maintenance Manual

Subtest 04

Cross Talk & Peak Shift
This subtest writes eight types of worst pattern data (shown below) to a
cylinder, then reads the data from cylinder to cylinder.
Subtest 05 Write /read/compare (CE)
This subtest writes B5ADADh worst pattern data to the CE cylinder on the
HDD, then reads the data and compares it with the original data.
Subtest 06 Write specified address
This subtest writes specified data to a specified cylinder and head.
Subtest 07 Read specified address
This subtest reads data written to a specified cylinder and head.
Subtest 08 ECC circuit
This subtest checks the Error Check and Correction (ECC) circuit functions of
a specified cylinder and head.
Subtest 09 Sequential write
This subtest writes specified 2-byte data to all cylinders.
Subtest 10 W-R-C specified address
This subtest writes data to a specified cylinder and head, then reads the data
and compares it to the original data.
3-28
Worst pattern data
'B5ADAD'
'4A5252'
'EB6DB6'
'149249'
'63B63B'
'9C49C4'
'2DB6DB'
'D24924'
Cylinder
0 cylinder
1 cylinder
2 cylinder
3 cylinder
4 cylinder
5 cylinder
6 cylinder
7 cylinder
T3400, T3400CT