IBM 390, 387, 393, 391 Releasing the non-hot-swap power supply assembly, ThinkServer User Guide

5.Note down the cable routing and connection. Then, disconnect the power supply assembly cables from the system board and all drives. For server models with hot-swap hard disk drives, you also need to disconnect the power cable(s) from the hot-swap hard disk drive backplane(s).

6.Release the power supply assembly cables from the cable clips and ties in the chassis.

7.Remove the four screws 1 at the rear of the chassis that secure the power supply assembly. Then, push the power supply assembly from the rear until it is released from the metal retaining tab 2 .

MEM CPU

Figure 77. Releasing the non-hot-swap power supply assembly

138ThinkServer User Guide