FUJITSU MAF3364LP - Manual (Page 113)

C141-E064-03EN 6 - 8
IMPORTANT
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.
At shipment
Figure 6.2 Indicating revision numbers
Rev. A3
Rev. A2
Revising at field