Fan - HP Compaq Presario,Presario C770 Maintenance And Service Manual

Fan

Description
Fan
NOTE:
To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the left side of
the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature
sensor and is designed to turn on automatically when high temperature conditions exist. These conditions
are affected by high external temperatures, system power consumption, power management/battery
conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced
through the ventilation grill located on the left side of the computer.
Before removing the fan, follow these steps:
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
1.
computer on, and then shut it down through the operating system.
Disconnect all external devices connected to the computer.
2.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
3.
then unplugging the AC adapter from the computer.
Remove the battery (see
4.
Remove the following components:
5.
Hard drive (see
a.
Optical drive (see
b.
Keyboard (see
c.
Switch cover (see
d.
Display assembly (see
e.
Top cover (see
f.
Remove the fan:
Disconnect the fan cable (1) from the system board.
1.
Remove the Phillips PM2.0×9.0 screw (2) that secures the fan to the base enclosure.
2.
68 Chapter 4 Removal and replacement procedures
Battery on page 40).
Hard drive on page 41)
Optical drive on page
Keyboard on page 50)
Switch cover on page
Display assembly on page
Top cover on page 62)
48)
53)
55)
Spare part number
454944-001