7.
Following the sequence stamped into the heat sink, loosen the four PM2.5×10.0 captive screws
(1)
that secure the heat sink to the processor.
NOTE:
Loosen the two additional screws that secure the heat sink to the graphics devices on
models with discrete graphics subsystem memory.
8.
Lift the heat sink off the processor
(2)
, and then lift the heat sink up and to the right to remove
the heat sink from the base enclosure
(3)
.
NOTE:
The thermal material must be thoroughly cleaned from the surfaces heat sink for the
discrete system board
(1)
,
(2)
, and
(3)
, and the system board
(4)
,
(5)
, and
(6)
each time the heat sink
is removed. Replacement thermal material is included with all heat sink, system board, and processor
spare part kits.
Component replacement procedures
85
Summary of Contents for ProBook 4320s
Page 4: ...iv Safety warning notice ...
Page 31: ...Computer major components Computer major components 23 ...
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