HP 4730s User Manual download pdf (Page 101)

Fan

Description Spare part number

Fan 646285-001

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 47).

5. Remove the following components:

a. Bottom door (see

Bottom door on page 49).

b. Hard drive (see

Hard drive on page 52)

c. Optical drive (see

Optical drive on page 50)

d. WLAN module (see

WLAN/Bluetooth combo card on page 58)

e. WWAN module (see

WWAN module on page 56)

f. Fan (see

Fan on page 93)

g. Heat sink (see

Heat sink on page 95)

h. Keyboard (see

Keyboard on page 63)

i. Top cover (see

Top cover on page 65)

j. System board (see

System board on page 85)

Remove the fan:

1. Position the system board upright.

2. Disconnect the fan cable (1) from the system board.

3. Remove the Phillips PM2.5×5.0 screw (2) that secures the fan to the system board.

Component replacement procedures 93

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HP 4730s User Manual Page 101