Owners Manual
Table Of Contents
- Dell Precision 7920 Tower Owner's Manual
- Contents
- Chassis
- Working on your computer
- Removing and installing components
- Screw size list
- Recommended tools
- Power supply unit (PSU)
- Side cover
- Air shroud
- Front bezel
- PCIe holder
- Intrusion switch
- Front system fan assembly
- Internal chassis speaker
- Hard disk drive and the Optical disk drive bezel
- Hard disk drive assembly
- NVMe Flexbay
- Front input and output bezel
- Front input and output panel
- Rear system fan
- Right side cover
- Hard disk drive and optical disk drive frame
- Slim Optical Disk Drive
- 5.25-inch optical drive
- Power distribution and fan control board
- Front HDD cable and fan assembly
- Fan bracket
- Graphical processing unit(GPU)
- Memory
- Coin cell battery
- Processor heat sink module
- System board
- RAID controller battery
- VROC module
- Technology and components
- System specifications
- System Setup
- Software
- Troubleshooting
- Contacting Dell
Chapter 1: Chassis.........................................................................................................................7
Front view..............................................................................................................................................................................7
Back view.............................................................................................................................................................................. 8
Internal view..........................................................................................................................................................................9
Major components of your system ............................................................................................................................... 12
Chapter 2: Working on your computer..........................................................................................14
Safety instructions.............................................................................................................................................................14
Turning off your computer — Windows...................................................................................................................... 14
Before working inside your computer........................................................................................................................... 15
After working inside your computer.............................................................................................................................. 15
Chapter 3: Removing and installing components.......................................................................... 16
Screw size list..................................................................................................................................................................... 16
Recommended tools.......................................................................................................................................................... 17
Power supply unit (PSU)..................................................................................................................................................18
Removing the PSU.......................................................................................................................................................18
Installing the PSU.........................................................................................................................................................18
Side cover............................................................................................................................................................................ 18
Removing the side cover............................................................................................................................................18
Installing the side cover.............................................................................................................................................. 19
Air shroud............................................................................................................................................................................ 20
Removing the air shroud............................................................................................................................................20
Installing the air shroud fan assembly.................................................................................................................... 20
Removing the air shroud fan.................................................................................................................................... 20
Installing the air shroud fan.......................................................................................................................................22
Front bezel.......................................................................................................................................................................... 22
Removing the front bezel.......................................................................................................................................... 22
Installing the front bezel............................................................................................................................................ 23
PCIe holder......................................................................................................................................................................... 24
Removing PCIe card holder ..................................................................................................................................... 24
Installing the PCIe card holder................................................................................................................................. 25
Intrusion switch................................................................................................................................................................. 25
Removing the intrusion switch.................................................................................................................................25
Installing the intrusion switch................................................................................................................................... 27
Front system fan assembly............................................................................................................................................. 28
Removing the front system fan assembly............................................................................................................. 28
Installing the front system fan assembly................................................................................................................ 31
Internal chassis speaker....................................................................................................................................................31
Removing the internal chassis speaker...................................................................................................................31
Installing the internal chassis speaker.................................................................................................................... 32
Hard disk drive and the Optical disk drive bezel........................................................................................................33
Removing the HDD bezel...........................................................................................................................................33
Installing the HDD bezel.............................................................................................................................................33
Contents
Contents 3