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
2-2 2 amber blinks followed by a
short pause, 2 white blinks,
long pause, then repeats
Motherboard: BIOS ROM
failure
● System is in Recovery
Mode.
● Flash latest BIOS version.
If problem persists,
contact Tech Support
2-3 2 amber blinks followed by a
short pause, 3 white blinks,
long pause, then repeats
No Memory
● If customer can assist
to troubleshoot, narrow
down the issue by
removing the memory
module one by one to
determine which one failed
and swapping to a known
good memory if available
to confirm.
● Contact Tech Support
2-4 2 amber blinks followed by a
short pause, 4 white blinks,
long pause, then repeats
Memory/RAM failure
● If customer can assist
to troubleshoot, narrow
down the issue by
removing the memory
module one by one to
determine which one failed
and swapping to a known
good memory if available
to confirm.
● Contact Tech Support
2-5 2 amber blinks followed by a
short pause, 5 white blinks,
long pause, then repeats
Invalid memory installed
● Memory subsystem
configuration activity is
in progress. Memory
modules have been
detected but appear to
be incompatible or in an
invalid configuration.
● If customer can assist
to troubleshoot, narrow
down the issue by
removing one by one the
memory on motherboard
to determine which one
failed.
● Contact Tech Support.
2-6 2 amber blinks followed by a
short pause, 6 white blinks,
long pause, then repeats
Motherboard: Chipset
● Fatal system board failure
detected.
● If customer can assist
to troubleshoot, narrow
down the issue by
removing one by one
the component on
motherboard to determine
which one failed.
● If you identified any of the
components failed, replace
the Component.
● Contact Tech Support.
3-1 3 amber blinks followed by
a short pause, 1 white blink,
long pause, then repeats
RTC failure
● Replace coin cell
Troubleshooting 121