Dell PowerVault 745N - Manual (Page 56)

Power Supply
The system supports a single nonredundant power supply.
Removing the Power Supply
1. Open the system. See " Opening the System " in Troubleshooting Your System."
2. Disconnect the following power supply cables:
a. P3 from the power distribution board
b. P2 from system board connector CN2
c. P1 from system board connector CN1
3. Loosen the captive screw at the front of the power supply that secures the power supply to the chassis. See Figure 6 -6 .
4. Slide the power supply forward and lift straight up to remove the power supply from the chassis.
Figure 6-6. Installing and Removing the Power Supply
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.