6. Disconnect the power supply cables 1and 2 from the system-board
connectors and from all drives. See Figure 18.
7. Remove the power-supply cables from the cable clips and ties.
8. Slide the power-supply assembly away from the chassis and remove it from
the computer. See Figure 19.
9. 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.
Note: Use only the screws provided by Lenovo.
10. Install and tighten the four screws at the rear of the chassis to secure the
power-supply assembly.
Figure 18. System-board connectors
Figure 19. Removing the power supply
24 ThinkCentre Hardware Installation and Replacement Guide