HP ProBook 4445s Maintenance And Service Manual page 78

g. Keyboard (see
h. Metal heat shield (see
i. Fan (see
j. Top cover (see
k. System board (see
Remove the discrete heat sink:
1. Position the system board face up with the front toward you.
2. To remove the discrete heat sink, in the order indicated on the heat sink, loosen the six captive
Phillips screws (1) that secure the heat sink to the system board.
3. Lift the heat sink up (2), and then pull it off the system board (3).
Remove the UMA heat sink.
1. To remove the UMA heat sink, in the order indicated on the heat sink, loosen the four captive
Phillips screws (1) that secure the heat sink to the system board.
70 Chapter 4 Removal and replacement procedures
Keyboard on page
Metal heat shield on page
Fan on page 52)
Top cover on page
System board on page
49)
51)
53)
66)