System board
NOTE: The system board spare part kit includes UMA or discrete graphics subsystem memory and
replacement thermal material.
Description Spare part number
Intel Pentium U5400 (1.2 GHz, 3M L3 cache) UMA 619456-001
Intel Pentium U5400 (1.2 GHz, 3M L3 cache) Discrete 619457-001
Intel Core i3–330UM (1.2 GHz, 3M L3 cache) UMA 621560-001
Intel Core i3–330UM (1.2 GHz, 3M L3 cache) Discrete 621561-001
Intel Dual Core i5–430UM (1.2 GHz SC turbo up to 1.73GHz, 3M L3 cache) Discrete 621562-001
Intel Core i3–380UM (1.33 GHz, 3M L3 cache) UMA 626598-001
Intel Core i3–380UM (1.33 GHz, 3M L3 cache) Discrete 626599-001
Intel Core i5–470UM (1.33 GHz SC turbo, 3M L3 cache) Discrete 626600-001
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:
●
Memory modules (see
Memory module on page 39)
●
WLAN module (see
WLAN module on page 55)
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 disconnecting the power cord from the AC
outlet and then disconnecting the AC adapter from the computer.
4. Remove the following components:
a. Battery (see
Battery on page 34)
b. Hard drive (see
Hard drive on page 36)
c. WLAN module (see
WLAN module on page 55)
d. Memory module (see
Memory module on page 39)
e. Keyboard (see
Keyboard on page 42)
f. Top cover (see
Top cover on page 45)
g. Display assembly (see
Display assembly on page 61)
Remove the following cables from the system board:
●
Power connector cable (see
Power cable on page 54).
Component replacement procedures 73
