System board
NOTE: All system board spare part kits include replacement thermal material.
Description Spare part number
Equipped with Intel Core Duo U7700 (1.33-GHz) processor (533-MHz FSB and 2-MB L2 cache) 469492-001
Equipped with Intel Core Duo U7600 (1.20-GHz) processor (533-MHz FSB and 2-MB L2 cache) 455083-001
Equipped with Intel Core Duo U7500 (1.06-GHz) processor (533-MHz FSB and 2-MB L2 cache) 455082-001
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
Battery on page 39).
5. Remove the following components:
a. Hard drive compartment cover (see
Hard drive on page 41)
b. Keyboard (see
Keyboard on page 50)
c. Rear plastic bezel (see
Rear plastic bezel on page 52)
d. Top cover (see
Top cover on page 54)
e. Display assembly (see
Display assembly on page 62)
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:
●
SIM (see
SIM on page 40)
●
Memory modules (see
Memory module on page 49)
●
RTC battery (see
RTC battery on page 57)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 68)
●
Modem module (see
Modem module on page 71)
Remove the system board:
1. Position the computer with the left side toward you.
2. Press the ExpressCard slot bezel (1) to release it from the ExpressCard slot. (The ExpressCard
slot bezel is partially ejected from the ExpressCard slot.) The ExpressCard slot bezel is included
in the Plastics Kit, spare part number 454685-001.
Component replacement procedures 65
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