HP Pavilion DV7-4070 Maintenance And Service Manual page 96

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 primary hard drive cover (see
6.
Remove the following components:
a.
Hard drive (see
b.
Secondary hard drive (see
c.
Optical drive (see
d.
Keyboard (see
e.
Top cover (see
f.
Display assembly (see
g.
System board (see
h.
USB board (see
Remove the fan/heat sink assembly:
NOTE: Steps 1 through 4 apply only to models with discrete subsystem memory on the system board.
See steps 5 through 8 apply only to models with UMA subsystem memory on the system board.
1.
Turn the system board upside down, with the expansion port and external monitor port toward
you.
2. Loosen the seven PM2.5×3.0 Phillips captive screws (1) that secure the fan/heat sink assembly to
the system board.
88 Chapter 4 Removal and replacement procedures
Battery on page 46).
Primary hard drive cover on page
Hard drive on page 48).
Secondary hard drive on page
Optical drive on page
Keyboard on page 58).
Top cover on page 61).
Display assembly on page
System board on page
USB board on page 79).
50).
57).
67).
77).
47).