HP ProBook 4540s HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP - Page 69

Fan, Remove the fan

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Fan Description Fan for use in 4540s models Fan for use in 4440s/4441s models Spare part number 683484-001 683651-001 Before removing the fan, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 42). 5. Remove the following components: a. Bottom door (see Bottom door on page 44). b. Keyboard (see Keyboard on page 56) c. Heat shield (see Heat shield on page 59) Remove the fan: 1. Position the computer upside-down. 2. Disconnect the fan cable (1) from the system board. 3. Remove the two Phillips PM2.5×5.0 screws (2) that secure the fan to the system board. Component replacement procedures 61

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Fan
Description
Spare part number
Fan for use in 4540s models
683484-001
Fan for use in 4440s/4441s models
683651-001
Before removing the fan, follow these steps:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.
Disconnect all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery
on page
42
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
44
).
b.
Keyboard (see
Keyboard
on page
56
)
c.
Heat shield (see
Heat shield
on page
59
)
Remove the fan:
1.
Position the computer upside-down.
2.
Disconnect the fan cable
(1)
from the system board.
3.
Remove the two Phillips PM2.5×5.0 screws
(2)
that secure the fan to the system board.
Component replacement procedures
61