Fujitsu MHV2040BS, Maintenance Manual

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1.1 Maintenance
C141-F075 1-7
(1) Revision number marking at delivery
The machine revision number is indicated by crossing out up to the relevant
number in the relevant alphabetic character row using = marks (see Figure 1.2).
(2) Revision number change in the field
When a part is replaced in the field or other modifications are made, the machine
revision number may need to be changed. The level is indicated by crossing out
the relevant number in the relevant alphabetic character row using
{
marks (see
Figure 1.2).
(3) Firmware code and revision
First 4-digit indicates a firmware code and rest 4-digit indicates its revision.
Note:
For a change of revision number after delivery, Fujitsu issues a
“Change Request/Notice” and the disk drive revision number after
the change. When a change is made at the user site, the revision
number level should be changed as described above.
Revision number mark when delivered
A2 Revision
Revision number change in the field
A3 Revision
Figure 1.2 Display of disk drive revision number