Owners Manual
Table Of Contents
- Dell Precision 7820 Tower Owner's Manual
- Chassis
- Working on your computer
- Removing and installing components
- Screw size list
- Recommended tools
- Power supply unit (PSU)
- Side cover
- Front bezel
- Hard Disk Drive bezel
- Hard disk drive assembly
- NVMe Flexbay
- Slim Optical Disk Drive
- Front input and output bezel
- 5.25 inch ODD bracket
- Front input and output panel
- Input and output panel bracket
- VROC module
- Intrusion switch
- Internal chassis speaker
- Air shroud
- Memory
- Graphical processing unit(GPU)
- Coin cell battery
- System fan
- Fan bracket
- PCIe holder
- Rear system fan
- Front system fan
- Processor heat sink module
- System board
- Technology and components
- System specifications
- System Setup
- Software
- Troubleshooting
- Contacting Dell
Table 23. Diagnostic Indicator table (continued)
Power Light: Amber-White
Blinking
Amber/White Blinking
Pattern
Problem Description Suggested Resolution
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
4-6 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.
4-7 4 amber blinks followed by a
short pause, 7 white blinks,
long pause, then repeats
System Side cover is missing
● System side cover(either
left or right) is missing.
● Unplug power, Install back
all side covers back to the
chassis and plug in power.
● Contact Tech Support.
Troubleshooting 131