420 Series
3-27
Subtest 04
Cross Talk & Peak Shift
This subtest writes eight types of worst pattern data (shown below) to a
cylinder, then reads the data while moving from cylinder to cylinder.
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
Write/read/compare (CE)
This subtest writes B5ADADh worst pattern data to the CE cylinder on the
HDD, then reads the data from the CE cylinder and compares it with the
original data.
Subtest 06
Write specified address
This subtest writes specified data to a specified cylinder and head on the HDD.
Subtest 07
Read specified address
This subtest reads data which has been written to a specified cylinder and head
on the HDD.
Subtest 08
ECC circuit
This subtest checks the Error Check and Correction (ECC) circuit functions of
the specified cylinder and head on the HDD.
Subtest 09
Sequential write
This subtest writes specified 2-byte data to all of the cylinders on the HDD.
Subtest 10
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.
Содержание 420CD
Страница 22: ...420 Series 2 3 Figure 2 1 Troubleshooting flowchart ...
Страница 172: ...420 Series B 1 Appendix B Board Layout B 1 System Board Front View Figure B 1 Board layout front ...
Страница 173: ...B 2 420 Series B 2 System Board Back View Figure B 2 Board layout back ...
Страница 197: ...E 2 420 Series E 3 German GR Keyboard Figure E 3 GR keyboard E 4 French FR Keyboard Figure E 4 FR keyboard ...
Страница 198: ...420 Series E 3 E 5 Spanish SP Keyboard Figure E 5 SP keyboard E 6 Italian IT Keyboard Figure E 6 IT keyboard ...
Страница 199: ...E 4 420 Series E 7 Scandinavian SC Keyboard Figure E 7 SC keyboard E 8 Swiss German SL Keyboard Figure E 8 SL keyboard ...