See Section 5.1 for notes on packing and handling when returning the disk drive.
6.2.2Revision numbers
The revision number of the disk drive is represented with a letter and a number indicated on the revision label attached to the DE. Figure 6.1 shows the revision label format.
Machine revision
Figure 6.1 Revision label
(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 
(see Figure 6.2).
Note:
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.
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