Take Apart Hard Drive - 24
Replacement Note:
If you
are replacing a defective
Hard Disk 20SC, be aware
that Apple currently ships
Revision A and Revision B
versions of this hard drive
and each version must be
replaced like-for-like. To
differentiate between drive
versions, check their
circuit boards. For Revision
A drives, the component
side of the board is up; for
Revision B drives, the
solder side of the board is
up. For part numbers,
refer to the Service Source
parts database.
Revision B
Revision A
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