HP ProBook 4446s HP ProBook 4445s Notebook PC HP ProBook 4446s Notebook PC - M - Page 70

Processor see, Remove the system board

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f. WLAN module (see WLAN/Bluetooth combo card on page 42) g. Keyboard (see Keyboard on page 44) h. Metal heat shield (see Metal heat shield on page 46) i. Fan (see Fan on page 47) j. Top cover (see Top cover on page 48) When replacing the system board, be sure to remove the following components from the defective system board and install on the replacement system board: ● Memory module (see Memory modules on page 40) ● WLAN module (see WLAN/Bluetooth combo card on page 42) ● Heat sink (see Heat sink on page 64) ● Processor (see Processor on page 66) Remove the system board: 1. Position the computer upright with the front toward you. 2. Disconnect the main power cable (1), display cable (2), and the audio cable (3) from the system board. 62 Chapter 4 Removal and replacement procedures

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f.
WLAN module (see
WLAN/Bluetooth combo card
on page
42
)
g.
Keyboard (see
Keyboard
on page
44
)
h.
Metal heat shield (see
Metal heat shield
on page
46
)
i.
Fan (see
Fan
on page
47
)
j.
Top cover (see
Top cover
on page
48
)
When replacing the system board, be sure to remove the following components from the defective
system board and install on the replacement system board:
●
Memory module (see
Memory modules
on page
40
)
●
WLAN module (see
WLAN/Bluetooth combo card
on page
42
)
●
Heat sink (see
Heat sink
on page
64
)
●
Processor (see
Processor
on page
66
)
Remove the system board:
1.
Position the computer upright with the front toward you.
2.
Disconnect the main power cable
(1)
, display cable
(2)
, and the audio cable
(3)
from the system
board.
62
Chapter 4
Removal and replacement procedures