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Diagnostics and Maintenance
6-8 C141-E230
(1) Indicating revision number at factory shipment
When the disk drive is shipped from the factory, the revision number is indicated by deleting
numbers in the corresponding letter line up to the corresponding number with = (see Figure 6.2).
(2) Changing revision number in the field
To change the revision number because parts are replaced or other modification is applied in the
field, the new level is indicated by enclosing the corresponding number in the corresponding letter
line with bold line (see Figure 6.2).
When the revision number is changed after the drive is shipped from
the factory, Fujitsu issues "Engineering Change Request/Notice" in
which the new revision number is indicated. When the user changes
the revision number, the user should update the revision label as
described in item (2) after applying the modification.
Figure 6.2 Indicating revision numbers
6.2.5 Tools and test equipment
Disk drive troubleshooting and repair in the field require only standard hand tools. No special tools
or test equipment are required.
This manual does not describe the factory-level tools and test equipment.
Rev. A2
Rev. A3
Revising at field
At shipment