HP ProBook 4430s Maintenance And Service Manual page 102

Description
For use in discrete models with 512-MB graphics memory
For use in discrete models with 1-GB graphics memory
Before removing the system board, 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
5. Remove the following components:
a. Bottom door (see
b. Hard drive (see
c. Optical drive (see
d. Modem module (see
e. Fan (see
f. Heat sink (see
g.
Keyboard (see
h. Top cover (see
When replacing the system board, be sure to remove the following components from the defective
system board and install on the replacement system board:
●
SIM (see
●
Memory module (see
●
WLAN module (see
●
WWAN module (see
●
Modem module (see
●
Processor (see
Remove the system board:
1. Position the computer upright with the front toward you.
94 Chapter 4 Removal and replacement procedures
Battery on page
Bottom door on page
Hard drive on page
Optical drive on page
Modem module on page
Fan on page 67)
Heat sink on page
Keyboard on page
Top cover on page
SIM on page 49)
Memory modules on page
WLAN/Bluetooth combo card on page
WWAN module on page
Modem module on page
Processor on page
48).
50).
53)
51)
81)
69)
64)
72)
55)
57)
81)
71)
Spare part number
655569-001
655570-001
59)