System Board - Compaq Presario CQ45 Maintenance And Service Manual

System board

Description
System board for use in computer models equipped with discrete graphics subsystems (includes
thermal material)
System board for use in computer models equipped with UMA graphics subsystems (includes
thermal material)
System board for use only in computer models with AMD processors (includes thermal material)
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
●
Memory modules (see
●
WLAN module (see
● Modem module (see
Before removing the system board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
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 following components:
a. Hard drive (see
b. Optical drive (see
c. Keyboard (see
d. Switch cover (see
e. Speaker assembly (see
f. Display assembly (see
g. Top cover (see
Remove the system board:
1. Turn the computer upright with the right side toward you.
82 Chapter 4 Removal and replacement procedures
RTC battery on page 52)
Memory module on page
WLAN module on page
Modem module on page
Battery on page
Hard drive on page
Optical drive on page
Keyboard on page 56)
Switch cover on page
Speaker assembly on page
Display assembly on page
Top cover on page 69)
54)
49)
76)
43).
46)
44)
58)
60)
62)
Spare part number
486725-001
486726-001
492256-001