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
Table 21. Diagnostic Indicator table (continued)
Power Light: Amber-White
Blinking
Amber/White Blinking
Pattern
Problem Description Suggested Resolution
3-2 3 amber blinks followed by a
short pause, 2 white blinks,
long pause, then repeats
PCI Device or Video
● PCI device configuration
activity is in progress or
PCI device failure was
detected.
● If you can assist
to troubleshoot, narrow
down the issue by
reseating PCI card and
removing one by one
to determine which card
failed.
●
Contact Tech Support.
3-3 3 amber blinks followed by a
short pause, 3 white blinks,
long pause, then repeats
BIOS Recovery 1
● System is in Recovery
Mode.
● Flash latest BIOS version.
If problem persists,
contact Tech Support
3-4 3 amber blinks followed by a
short pause, 4 white blinks,
long pause, then repeats
BIOS Recovery 2
● System is in Recovery
Mode.
● Flash latest BIOS version.
If problem persists,
contact Tech Support
4-1 4 amber blinks followed by
a short pause, 1 white blink,
long pause, then repeats
CPU Config or CPU Failure
● The 2 installed CPU's do
not match, Please install 2
CPU's of the same type
4-2 4 amber blinks followed by a
short pause, 2 white blinks,
long pause, then repeats
Generic POST Video error
(Old LED pattern 1110)
● PCI device config
or failure with video
subsystem config or failure
4-3 4 amber blinks followed by a
short pause, 3 white blinks,
long pause, then repeats
Bad Memory
● Memory VR would not
turn on. Check Memory
insertion
4-4 4 amber blinks followed by a
short pause, 4 white blinks,
long pause, then repeats
Riser board issue
● Power issue on Riser
second CPU board
4-5 4 amber blinks followed by a
short pause, 5 white blinks,
long pause, then repeats
PCIe Add-in Card population
issue
● PCI device is installed on
CPU1 slot and CPU1 is not
installed.
● If you can assist to
troubleshoot, move all
PCIe card in CPU1 slot to
CPU0 slot. An alternative
would be install an
identical CPU as CPU0 to
CPU1 socket.
● Contact Tech Support
4-6 4 amber blinks followed by a
short pause, 6 white blinks,
long pause, then repeats
RAID Volume degraded
● RAID volume is degraded.
● If you can assist to
troubleshoot, us F12
menu to enter Device
Configuration tab. Rebuild
the RAID volume if
possible
● Contact Tech Support.
122 Troubleshooting