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Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury,
seek medical care immediately.
DANGER
Disconnect all power cords from electrical outlets before removing the computer cover or any part
that has the above label attached.
To remove and install the power supply assembly, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 55.
2. To remove the power supply assembly, do the following:
a. Disconnect the power supply assembly cables from the system board and all drives. See "Parts on
the system board" on page 6.
b. Release the power supply assembly cables from the cable clips and ties.
c. Lay the computer on its side and remove the four screws at the rear of the chassis that secure the
power supply assembly. Then slide the power supply assembly to the front of the computer and then
lift it out of the chassis.
Figure 82. Removing the screws for the power supply assembly
3. To install the power supply assembly, do the following:
a. Ensure that the new power supply assembly is the correct replacement.
b. 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.
c. Install and tighten the four screws to secure the power supply assembly.
Note: Use only screws provided by Lenovo.
d. Connect the power supply assembly cables to the system board and each of the drives.
e. Secure the power supply assembly cables with the cable clips and ties in the chassis.
.
Chapter 7
Hardware removal and installation
95
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