3. Pull the system board (2) up and toward the right to disengage the connectors from the left side of the
computer, and then lift out the system board (3).
Reverse this procedure to install the system board.
Heat sink
Description Spare part number
Heat sink
For use in models with discrete graphics F16M memory L30393-001
For use in models with discrete graphics N18P memory L30391-001
For use in models with discrete graphics N18E memory L30392-001
For use in models with UMA graphics L30390-001
Before removing the heat sink, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the any smart cards and memory cards.
5. Remove the bottom cover (see Service door on page 41).
6. Remove the battery (see Battery on page 43).
7. Remove the memory modules (see Memory modules on page 51).
8. Remove the ODD (see ODD on page 48).
74 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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