- Notes, cautions, and warnings
- Working on your computer
- Chassis View
- Product Overview
- Disassembly and reassembly
- Product Positioning
- Recommended tools
- Need to know
- Chassis LEDs
- Jumpers and connectors
- Disassembly and reassembly
- Front Bezel
- System cover
- Optical drive
- Air shroud
- Cooling fan assembly
- Cooling fans
- Intrusion switch
- Hard drive
- Removing hard drive blank
- Installing hard drive blank
- Removing hard drive
- Installing hard drive
- Removing 3.5 inch hard drive from hard drive carrier
- Installing 3.5 inch hard drive into hard drive carrier
- Removing hard drive
- Installing 2.5 inch hard drive
- Removing 2.5 inch hard drive from 3.5 inch hard drive carrier
- Installing 2.5 inch hard drive into 3.5 inch hard drive carrier
- Memory modules
- Processors and heat sinks
- Expansion card
- Removing expansion card from expansion card riser
- Installing expansion card into expansion card riser
- Opening and closing the full length PCIe card holder latch
- Removing expansion card riser 1
- Installing expansion card riser 1
- Removing expansion card riser 2
- Installing expansion card riser 2
- Removing expansion card riser 3
- Installing expansion card riser 3
- Removing the Dell ultraspeed drive duo card from the expansion card shroud
- Installing the Dell ultraspeed drive duo card into the expansion card shroud
- vFlash card – optional
- Network daughter card
- Hard drive backplane
- Front USB module
- Internal USB memory key (optional)
- Power supply unit
- System board
- Trusted Platform Module
- Control panel
- GPU Host Card Installation
- Updating BIOS
- Restoring the Service Tag using Easy Restore
- Installation
- Accessing system information by using QRL
- Technology and components
- BIOS and UEFI
- Options to manage the pre-operating system applications
- System Setup
- Viewing System Setup
- System Setup Main Menu
- System BIOS screen
- System information screen details
- Memory settings screen details
- Processor settings screen details
- SATA settings screen details
- Boot settings screen details
- Network settings screen details
- Integrated devices screen details
- Serial Communication screen details
- System profile settings screen details
- System security settings screen details
- Miscellaneous settings screen details
- Updating the BIOS
- Troubleshooting your system
- Getting help and contacting Dell
Dell Precision 7920 Rack Owner's Manual
Removing AC power supply unit
Prerequisites
CAUTION:The
needs one power supply unit (PSU) for normal operation. On power-redundant
systems, remove and replace only one PSU at a time in a system that
is powered on.
- Disconnect the power cable from the power source and from the PSU you intend to remove, and then remove the cable from the strap on the PSU handle.
Steps
Press the release latch and slide the PSU out of the system by using
the PSU handle.
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