Lenovo ThinkCentre A70 7099 Hardware Maintenance Manual page 147

8. Install the new power supply assembly into the chassis so that the screw holes
in the new power supply assembly are aligned with the corresponding holes
in the rear of the chassis. Then, install the three screws to secure the new
power supply assembly in place.
Note: Use only screws provided by Lenovo.
Figure 58. Installing the power supply assembly
9. Connect the new power supply assembly cables to all drives and to the 24-pin
power connector and 4-pin power connector on the system board. See
"Locating parts on the system board" on page 120.
10. Make sure that the cables are routed properly. See Figure 76 on page 157.
Chapter 9. Replacing FRUs - Desktop computers
141