Lenovo 3149 Manuel D’Utilisation
7. Release the power supply assembly cables from the cable clips and ties in the chassis.
8. Slide the power supply assembly to the front of the computer and then lift it out of the chassis.
Figure 23. Removing the power supply assembly
9. Install the new power supply assembly into the chassis so that the screw holes in the new power supply
assembly align with those in the chassis.
10. Install and tighten the four screws to secure the power supply assembly.
Note: Use only the screws provided by Lenovo.
11. Reconnect all the power supply assembly cables to the system board and each of the drives.
12. Secure the power supply assembly cables with the cable clips and ties in the chassis.
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 32.
Replacing the heat sink
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre
Safety and Warranty Guide, go to:
http://www.lenovo.com/support
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre
Safety and Warranty Guide, go to:
http://www.lenovo.com/support
This section provides instructions on how to replace the heat sink.
24
ThinkCentre User Guide