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
Troubleshooting
The following section describes common troubleshooting steps that can be performed to resolve certain problems on your
computer.
Topics:
• Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0
• Hard drive indicator codes
Dell Enhanced Pre-Boot System Assessment — ePSA
Diagnostic 3.0
You can invoke the ePSA diagnostics by either of the following ways :
●
Press the F12 key when the system posts and choose ePSA or Diagnostics option on One Time Boot Menu.
● Press and hold Fn(Function key on keyboard) and Power On (PWR) the system.
Running the ePSA Diagnostics
Invoke diagnostics boot by either of the methods that are suggested below:
1. Power on the computer.
2. As the computer boots, press the F12 key when the Dell logo is displayed.
3. In the boot menu screen, use Up/Down arrow key to select the Diagnostics option and then press Enter.
NOTE:
The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the computer.
The diagnostics starts running the tests on all the detected devices.
4. Press the arrow in the lower-right corner to go to the page listing.
The detected items are listed and tested.
5. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.
6. Select the device from the left pane and click Run Tests.
7. If there are any issues, error codes are displayed.
Note the error code and contact Dell.
Testing memory using ePSA
1. Turn on or restart your system.
2. Perform one of the following actions after the Dell logo is displayed:
● With keyboard press F12.
● The system displays one time boot menu and uses up and down arrow key to go to diagnostics and press enter to launch
ePSA.
The Pre Boot System Assessment (PSA) starts on your system.
NOTE:
If you wait too long and the operating system logo be displayed, continue to wait until you see the desktop. Turn
off the laptop and try again.
NOTE: ePSA can alternatively be launched by pressing and holding Fn+ Press Power button.
8
Troubleshooting 119