System Board - HP 520 Maintenance And Service Manual

System board

Description
For use only with computer models with Intel Core processors and WLAN capability
For use only with computer models with Intel Celeron M processors and WLAN capability
For use only with computer models without WLAN capability
When replacing the system board, be sure that the following components are removed from the defective
system board and installed on the replacement system board:
Memory module (see
●
WLAN module (see
●
RTC battery (see
●
Processor (see
●
PC Card assembly (see
●
Before removing the system board, follow these steps:
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
1.
computer on, and then shut it down through the operating system.
Disconnect all external devices connected to the computer.
2.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
3.
then unplugging the AC adapter from the computer.
Remove the battery (see
4.
Remove the following components:
5.
Hard drive (see
a.
Memory/WLAN module compartment cover (see
b.
Optical drive (see
c.
Switch cover (see
d.
Keyboard (see
e.
Display assembly (see
f.
Base enclosure (see
g.
Fan assembly (see
h.
Heat sink (see
i.
60 Chapter 4 Removal and replacement procedures
Memory module on page
WLAN module on page
RTC battery on page
Processor on page 57)
PC Card assembly on page
Battery on page
Hard drive on page
Optical drive on page
Switch cover on page
Keyboard on page
Display assembly on page
Base enclosure on page
Fan assembly on page
Heat sink on page
35)
37)
52)
62)
31).
32)
Memory module on page
39)
41)
43)
45)
50)
53)
55)
Spare part number
448339-001
448337-001
448338-001
35)