Toshiba T6400, Maintenance Manual

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The HDD status is described in Section 3.15. Type 1 or 2 and press
Enter
.
6. The HARD DISK TEST menu will appear after you respond to the detail status prompt.
Select the number for the subtest you want to execute and press
Enter . The following
message will appear during each subtest.
HARD DISK TEST xxxxxxx
SUB-TEST: xx
PASS COUNT: xxxxx ERROR COUNT: xxxxx
WRITE DATA: xx READ DATA: xx
ADDRESS: xxxxxxxx STATUS: xxx
The first four digits of the
ADDRESS
number indicate which cylinder is being tested, the
fifth and sixth digits indicate the head, and the last two digits indicate the sector.
The first digit of the
STATUS
number indicates the drive being tested and the last two
digits indicate the error code as explained in Table 3-3.
Subtest 01 Sequential Read
This subtest is a sequential reading of all the tracks on the HDD starting at track 0.
When all the tracks on the HDD have been read, the test starts at the maximum track
and reads the tracks on the HDD sequentially back to track 0.
Subtest 02 Address Uniquence (Uniqueness)
This subtest writes unique address data to each sector of the HDD track by track.
The data written to each sector is then read and compared with the original data.
There are three ways the HDD can be read:
●
Forward sequential
●
Reverse sequential
●
Random
Subtest 03 Random Address/Data
This subtest writes random data to random addresses (cylinder, head, and sector) on
the HDD. This data is then read and compared to the original data.
Subtest 04 Cross Talk & Peek (Peak) Shift
This subtest writes eight types of the worst pattern data (shown below) to a cylinder,
then reads the data while moving from cylinder to cylinder.