HP ProBook 640 G1 Maintenance And Service Manual page 103

a. Service cover (see
b. Hard drive (see
c. Optical drive (see
d. Fan/heat sink assembly (see
e. Keyboard (see
f. Display assembly (see
g. Base enclosure (see
h. USB board (see
NOTE: 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:
●
WWAN module (see
●
Solid-state drive (see
●
WLAN module (see
●
Expansion memory (see
●
Primary memory (see
●
Smart card reader (see
●
Processor (see Processor on page
Remove the system board:
1. Disconnect the following cables from the system board:
(1) Card reader cable
(2) Power connector cable
Left (3) and right (4)speaker cables
(5) Display panel cable (if display panel is still attached)
Service cover on page
Hard drive on page 58)
Optical drive on page
Fan and heat sink assembly on page
Keyboard on page 72)
Display assembly on page
Base enclosure on page
USB board on page 85)
WWAN module (select models only) on page
Solid-state drive on page
WLAN module on page 67)
Primary memory module on page
Expansion memory module on page
Smart card reader on page
98)
57)
69)
104)
82)
65)
70)
62)
64)
88)
79)
System board 93