Fan/heat sink assembly
NOTE: The fan/heat sink assembly spare part kit includes replacement thermal material.
Description Spare part number
For use only with an NVIDIA Quadro K1100M NVIDIA N15P-Q1 graphics board, spare part number
785223-001
734289-001
For use only with an NVIDIA Quadro K610M NVIDIA N15M-Q2 graphics board, spare part number
785225-001
734290-001
For use only with an NVIDIA Quadro K2100M NVIDIA N15P-Q3 graphics board, spare part number
785224-001
734291-001
For use only with an AMD FirePro M5100 graphics board, spare part number 784470-001 784469-001
Before removing the fan/heat sink assembly, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 44), and then remove the following components:
a. Service cover (see
Service cover on page 45)
b. Hard drive (see
Hard drive on page 46)
c. Optical drive (see
Optical drive on page 48)
d. Keyboard (see
Keyboard on page 57)
e. Top cover (see
Top cover on page 65)
Remove the fan/heat sink assembly:
1. Disconnect the fan cable (1) from the system board.
2. Following the 1 through 4 sequence stamped into the processor heat sink, loosen the four Phillips
captive screws (2) that secure the processor heat sink to the system board.
3. Following the 5 through 8 sequence stamped into the graphics board heat sink, loosen the four Phillips
captive screws (3) that secure the graphics board heat sink to the system board.
Component replacement procedures 81
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