HP ProBook 4520s HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Page 80

For computers with UMA subsystem memory on the system board, follow these steps

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4. Clean the thermal material from the surfaces of the heat sink components (1) and (3) and from the system board (2) and (4) when the heat sink is removed. Replacement thermal material is included with all heat sink, system board, and processor spare part kits. ● For computers with UMA subsystem memory on the system board, follow these steps: 1. Position the computer right-side up with the front toward you. 2. Following the sequence stamped into the heat sink, loosen the four screws (1), (2), (3), (4) around the processor. 72 Chapter 4 Removal and replacement procedures

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4.
Clean the thermal material from the surfaces of the heat sink components
(1)
and
(3)
and from the
system board
(2)
and
(4)
when the heat sink is removed. Replacement thermal material is
included with all heat sink, system board, and processor spare part kits.
●
For computers with UMA subsystem memory on the system board, follow these steps:
1.
Position the computer right-side up with the front toward you.
2.
Following the sequence stamped into the heat sink, loosen the four screws
(1)
,
(2)
,
(3)
,
(4)
around the processor.
72
Chapter 4
Removal and replacement procedures