System Board - HP EliteBook 8440W Maintenance And Service Manual

Removal and replacement procedures

System board

✎
The system board spare part kit includes replacement thermal material.
Description
System board for use with HP EliteBook 8440p discrete graphics subsystem
System board for use with HP EliteBook 8440w discrete graphics subsystem
System board for use with HP EliteBook 8440p UMA graphics subsystem
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. Hard drive (see
b. Wireless modules antenna cables (see
c. Optical drive (see
d. Keyboard and switch cover (see
e. Display assembly (see
f. RTC battery (see
g. Top cover (see
h. Audio/ExpressCard (see
i. Speakers (see
j. Modem (see
When replacing the system board, be sure that the following additional components are removed from the defective
system board and installed on the replacement system board:
■
SIM (see "SIM" on page
■
WLAN module (see
■
Memory modules (see
■
WWAN module (see
■
Modem module (see
■
Fan and heat sink (see
■
RTC battery (see
■
Processor (see
4–50
"Battery" on page
"Hard drive" on page
"Optical drive" on page
"Keyboard and switch cover" on page
"Display assembly" on page
"RTC battery" on page
"Top cover" on page
"Audio/ExpressCard board" on page
"Speakers" on page 4-45)
"Modem module" on page
4-8)
"WLAN module" on page
"Memory module" on page
"WWAN module" on page
"Modem module" on page
"Fan and heat sink" on page
"RTC battery" on page
"Processor" on page 4-40)
4-7).
4-9)
"WLAN module" on page 4-11
4-20)
4-27)
4-39)
4-42)
4-49)
4-11)
4-16)
4-14)
4-49)
4-35)
4-39)
Spare part number
594026-001
594027-001
594028-001
and "WWAN module" on page
4-22)
4-44)
Maintenance and Service Guide
4-14)