Specifications

4. Remove the system board (3) by sliding it up and to the right at an angle.
Reverse this procedure to install the system board.
Fan/heat sink assembly
NOTE: The fan/heat sink assembly spare part kit include replacement thermal material.
Description Spare part number
For use only on computer models equipped with a graphics subsystem with GeForce 650M
discrete memory
702120-001
For use only on computer models equipped with a graphics subsystem with GeForce 630M
discrete memory
681226-001
For use only on computer models equipped with a graphics subsystem with UMA memory 681225-001
NOTE: To properly ventilate the computer, allow at least 7.6 cm (3 in) of clearance on the left side
of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a
temperature sensor and is designed to turn on automatically when high temperature conditions exist.
These conditions are affected by high external temperatures, system power consumption, power
management/battery conservation configurations, battery fast charging, and software requirements.
Exhaust air is displaced through the ventilation grill located on the left side of the computer.
Before removing the fan/heat sink assembly, follow these steps:
1. Shut down the computer.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
Component replacement procedures 59