HP EliteBook 8740W Service Manual page 107

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
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
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
●
WLAN module (see
●
WWAN module (see
●
Expansion memory modules (see
●
RTC battery (see
●
Primary memory modules (see
●
Graphics board (see
●
Processor heat sink (see
●
Processor (see
●
Bluetooth module cable (see
●
Audio cable (see
●
Modem module (see
Remove the system board:
1. Disconnect the network cable (1) from the system board.
2. Press in on the ExpressCard slot bezel (2) to release it from the ExpressCard slot.
3. Remove the ExpressCard slot bezel (3) from the ExpressCard slot.
Downloaded from LpManual.com Manuals
Battery on page
Primary hard drive (see Primary hard drive on page
Optical drive (see Optical drive on page
drive on page 55)
Keyboard (see Keyboard on page
Switch cover (see Switch cover on page
Graphics board heat sink (see
Display assembly (see Display assembly on page
Top cover (see Top cover on page
Audio board (see Audio board on page
Speaker (see Speaker assembly on page
USB board (see USB board on page
SIM on page 48)
WLAN module on page
WWAN module on page
RTC battery on page
Graphics board on page
Processor heat sink on page
Processor on page
Bluetooth module cable on page
Audio cable on page
Modem module on page
47), and then remove the following components:
54) or secondary hard drive (see
63)
67)
Graphics board heat sink on page
76)
86)
90)
91)
96)
57)
59)
Expansion memory module on page
62)
Primary memory module on page
72)
73)
75)
93)
94)
49)
Secondary hard
69)
60)
66)
89)
Component replacement procedures 99