Toshiba T2000 Maintenance Manual page 82

This subtest writes specified data to a specified cylinder and head.
Subtest 07 Read specified address
This subtest reads data which has been written to a specified cylinder and head.
Subtest 08 ECC circuit
This subtest checks the Error Check and Correction (ECC) circuit functions of the
specified cylinder and head.
Subtest 09 Sequential write
This subtest writes specified 2-byte data to all cylinders.
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