Lenovo ThinkCentre M72z Hardware Maintenance Manual (HMM) for ThinkCentre M72z - Page 94

Replacing the microprocessor fan

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9. Remove the three screws 1 that secure the power supply, and then remove the power supply out of the computer. Figure 25. Removing the three screws that secure the power supply 10. To reinstall the power supply, reinstall the two screws that secure the power cord connector to the power connector bracket. See "Replacing the rear I/O assembly" on page 84. 11. Position the new power supply in the computer and align the three screw holes in the new power supply with those in the computer main bracket. Install the three screws to secure the new power supply. 12. Route the new power cord connector cable, and then reinstall the rear I/O assembly. See "Replacing the rear I/O assembly" on page 84. 13. Connect the new power supply cables to the power supply connectors on the system board. See "System board parts and connectors" on page 70. 14. Reinstall the system board shield. See "Removing and reinstalling the system board shield" on page 86. 15. Reinstall the VESA mount bracket. See "Removing the VESA mount bracket" on page 83. 16. Reinstall the computer cover. See "Removing the computer cover" on page 79. 17. Go to "Completing the parts replacement" on page 109. Replacing the microprocessor fan Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the Safety , Warranty, and Setup Guide that came with your computer. To obtain a copy of the Safety , Warranty, and Setup Guide, go to: http://www.lenovo.com/support This section provides instructions on how to replace the microprocessor fan. To replace the microprocessor fan, do the following: 88 ThinkCentre Hardware Maintenance Manual

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9. Remove the three screws
1
that secure the power supply, and then remove the power supply out
of the computer.
Figure 25. Removing the three screws that secure the power supply
10. To reinstall the power supply, reinstall the two screws that secure the power cord connector to the
power connector bracket. See “Replacing the rear I/O assembly” on page 84.
11. Position the new power supply in the computer and align the three screw holes in the new power supply
with those in the computer main bracket. Install the three screws to secure the new power supply.
12. Route the new power cord connector cable, and then reinstall the rear I/O assembly. See “Replacing
the rear I/O assembly” on page 84.
13. Connect the new power supply cables to the power supply connectors on the system board. See
“System board parts and connectors” on page 70.
14. Reinstall the system board shield. See “Removing and reinstalling the system board shield” on page 86.
15. Reinstall the VESA mount bracket. See “Removing the VESA mount bracket” on page 83.
16. Reinstall the computer cover. See “Removing the computer cover” on page 79.
17. Go to “Completing the parts replacement” on page 109.
Replacing the microprocessor fan
Attention
Do not open your computer or attempt any repair before reading and understanding the “Important safety
information” in the
Safety , Warranty, and Setup Guide
that came with your computer. To obtain a copy of
the
Safety , Warranty, and Setup Guide
, go to:
This section provides instructions on how to replace the microprocessor fan.
To replace the microprocessor fan, do the following:
88
ThinkCentre Hardware Maintenance Manual