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Replacing the power supply assembly
Attention
Do not open your computer or attempt any repair before reading and
understanding the “Important safety information” in the ThinkStation Safety
and Warranty Guide that came with your computer. To obtain a copy of the
ThinkStation Safety and Warranty Guide,goto:
http://www.lenovo.com/support
This section provides instructions on how to replace the power supply assembly.
To replace the power supply assembly, do the following:
1. Remove the computer cover. See “Removing the computer cover” on page 14.
2. Disconnect the power supply assembly cables from the system board and all
drives. See “Locating parts on the system board” on page 11.
3. Release the power supply assembly cables from the cable clips and ties in the
chassis.
4. Lay the computer on its side and remove the four screws at the rear of the
chassis that secure the power supply assembly.
5. Slide the power supply assembly to the front of the computer and then lift it
out of the chassis.
6. Ensure that the new power supply assembly is the correct replacement.
7. Install the new power supply assembly into the chassis so that the screw holes
in the power supply assembly align with those in the chassis.
8. Install and tighten the four screws to secure the power supply assembly.
Note: Use only screws provided by Lenovo.
9. Reconnect the power supply assembly cables to the system board and each of
the drives.
Figure 18. Removing the screws for the power supply assembly
24 User Guide