Installing The Power Supply - Dell PowerEdge 850 Installation And Troubleshooting Manual

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the
computer and protecting against electrostatic discharge.
1. Open the system. See "Opening the
2. Disconnect the following power supply cables:
a. P3 from the hard drive cable harness
b. P2 from system board connector 12V
c. P1 from system board connector PWR_CONN
3. Using a #2 Phillips screwdriver, remove the screw at the front of the power supply that secures the power supply to the chassis. See Figure 5-5.
4. Slide the power supply forward and lift straight up to remove the power supply from the chassis.
Figure 5-5. Installing and Removing the Power Supply

Installing the Power Supply

1. Lower the power supply into the chassis and slide it backward until the four pins on the power supply are engaged into the securing brackets.
2. Using a #2 Phillips screwdriver, install the screw at the front of the power supply that secures the power supply to the chassis.
3. Connect the following power supply cables:
a. P3 to the hard drive cable harness
b. P2 to the system board connector 12V
c. P1 to the system board connector PWR_CONN
4. Close the system. See "Closing the
Expansion Cards
The system is available with an optional PCIe riser card or PCI-X/PCIe riser card. The PCIe riser card provides one PCIe x4-lane expansion slot and one PCIe
x8-lane expansion slot, and the PCI-X/PCIe riser card provides one PCI-X expansion slot and one PCIe x8-lane expansion slot. If you are installing a remote
access controller card, it must be installed in the upper slot of a PCI-X/PCIe riser card. See
the locations of the expansion-card slots on the two types of riser cards.
Installing an Expansion Card
System" in "Troubleshooting Your System."
System" in "Troubleshooting Your System."
"Riser Card Connectors" in "Jumpers, Switches, and Connectors" for