HP Pavilion dv7-4200 HP Pavilion dv7 Entertainment PC - Maintenance and Servic - Page 89

Remove the system board, Disconnect the following cables from the system board

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5. Remove the primary hard drive cover (see Primary hard drive cover on page 47). 6. Remove the following components: a. Hard drive (see Hard drive on page 48). b. Remove the secondary hard drive (see Secondary hard drive on page 50). c. Optical drive (see Optical drive on page 58) d. Keyboard (see Keyboard on page 60) e. Top cover (see Top cover on page 62) f. Display assembly (see Display assembly on page 68) 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: ● RTC battery (see RTC battery on page 56) ● Memory module (see Memory module on page 57) ● WLAN module (see WLAN module on page 52) ● Fan/heat sink assembly (see Fan/heat sink assembly on page 88) ● Processor (see Processor on page 93) Remove the system board: 1. Disconnect the following cables from the system board: (1) USB board cable (2) Power connector cable (3) Subwoofer cable (4) Speaker cable 2. Remove the two Phillips PM2.5×5.0 screws (1) that secure the system board to the base enclosure. ENWW Component replacement procedures 79

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5.
Remove the primary hard drive cover (see
Primary hard drive cover
on page
47
).
6.
Remove the following components:
a.
Hard drive (see
Hard drive
on page
48
).
b.
Remove the secondary hard drive (see
Secondary hard drive
on page
50
).
c.
Optical drive (see
Optical drive
on page
58
)
d.
Keyboard (see
Keyboard
on page
60
)
e.
Top cover (see
Top cover
on page
62
)
f.
Display assembly (see
Display assembly
on page
68
)
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:
●
RTC battery (see
RTC battery
on page
56
)
●
Memory module (see
Memory module
on page
57
)
●
WLAN module (see
WLAN module
on page
52
)
●
Fan/heat sink assembly (see
Fan/heat sink assembly
on page
88
)
●
Processor (see
Processor
on page
93
)
Remove the system board:
1.
Disconnect the following cables from the system board:
(1)
USB board cable
(2)
Power connector cable
(3)
Subwoofer cable
(4)
Speaker cable
2.
Remove the two Phillips PM2.5×5.0 screws
(1)
that secure the system board to the base
enclosure.
ENWW
Component replacement procedures
79