Compaq G56 Laptop User Manual


 
System board
NOTE: The system board spare part kit includes UMA graphics subsystem memory and
replacement thermal material.
Description Spare part number
PCA UMA system board (AMD) 623915-001
PCA UMA system board (Intel) 623909-001
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 69)
Memory modules (see
Memory module on page 44)
WLAN module (see
WLAN module on page 42)
Fan/heat sink assembly (see
Fan/heat sink assembly on page 71)
Processor (see
Processor on page 75
Before removing the system board:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on
the computer, 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 following components:
a. Battery (see
Battery on page 36)
b. Hard drive module (see
Hard drive on page 37)
c. WLAN module (see
WLAN module on page 42)
d. Memory module (see
Memory module on page 44)
e. Optical drive (see
Optical drive on page 39)
f. Keyboard (see
Keyboard on page 46)
g. Top cover (see
Top cover on page 49)
h. Display assembly (see
Display assembly on page 59)
i. Fan/heat sink assembly (see
Fan/heat sink assembly on page 71)
j. Processor (see
Processor on page 75
66 Chapter 4 Removal and replacement procedures