Lenovo ThinkCentre M92z Hardware Maintenance Manual - ThinkCentre M92z (type 3 - Page 118

Replacing the microprocessor fan

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7. Align the screw holes in the new power cord connector with the corresponding ones in the chassis. Then, install the screws to secure the new power cord connector to the chassis. 8. Align the screw holes in the new power supply assembly with the corresponding ones in the chassis. Then, install the screws to secure the new power supply assembly to the chassis. 9. Connect the cables of the new power supply assembly to the system board. See "Locating parts on the system board" on page 79. 10. Reinstall the VESA mount bracket. See "Replacing the thermal sensor" on page 98. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to "Completing the parts replacement" on page 127. Replacing the microprocessor fan Attention: Do not open your computer or attempt any repair before reading and understanding "Important Safety Information" on page 1. This section provides instructions on how to replace the microprocessor fan. To replace the microprocessor fan, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer cover. See "Removing the computer cover" on page 83. 4. Locate the microprocessor fan. See "Locating major FRUs and CRUs (for models with the 20-inch display)" on page 73 or "Locating major FRUs and CRUs (for models with the 23-inch display)" on page 76. 5. Remove the VESA mount bracket and disconnect the cables of the microprocessor fan from the system board. See "Replacing the thermal sensor" on page 98. 114 ThinkCentre Hardware Maintenance Manual

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7. Align the screw holes in the new power cord connector with the corresponding ones in the chassis.
Then, install the screws to secure the new power cord connector to the chassis.
8. Align the screw holes in the new power supply assembly with the corresponding ones in the chassis.
Then, install the screws to secure the new power supply assembly to the chassis.
9. Connect the cables of the new power supply assembly to the system board. See “Locating parts on the
system board” on page 79.
10. Reinstall the VESA mount bracket. See “Replacing the thermal sensor” on page 98.
What to do next:
•
To work with another piece of hardware, go to the appropriate section.
•
To complete the installation or replacement, go to “Completing the parts replacement” on page 127.
Replacing the microprocessor fan
Attention:
Do not open your computer or attempt any repair before reading and understanding “Important Safety Information”
on page 1.
This section provides instructions on how to replace the microprocessor fan.
To replace the microprocessor fan, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See “Removing the computer cover” on page 83.
4. Locate the microprocessor fan. See “Locating major FRUs and CRUs (for models with the 20-inch
display)” on page 73 or “Locating major FRUs and CRUs (for models with the 23-inch display)” on
page 76.
5. Remove the VESA mount bracket and disconnect the cables of the microprocessor fan from the system
board. See “Replacing the thermal sensor” on page 98.
114
ThinkCentre Hardware Maintenance Manual