Diagnostic LED
Instead of beep codes, errors are indicated by the bicolor Battery Charge/Status LED. A specific blink pattern is followed by
flashing a pattern of flashes in amber, followed by white. The pattern then repeats.
NOTE:
The diagnostic pattern consists of a two-digit number being represented by a first group of LED blinks (1 through 9)
in amber, followed by a 1.5 s pause with the LED off, and then a second group of LED blinks (1 through 9) in white. This is
then followed by a three second pause, with the LED off, before repeating over again. Each LED blink takes 1.5 s.
The system will not shut down when displaying the Diagnostic Error Codes.
Diagnostic Error Codes will always supersede any other use of the LED.
Table 21. Diagnostic LED/Beep codes
Blinking Patterns
Problem description
Faults
Amber
White
2
1
Faulty system board
Faulty system board
2
2
Faulty system board, power supply, unit (PSU), or cabling
Faulty system board, power
supply, unit (PSU), or cabling
2
3
Faulty system board, CPU, or DIMMS
Faulty system board, power
supply, unit (PSU), or DIMMS
2
4
Faulty coin cell battery
Faulty coin cell battery
2
5
BIOS Recovery
Auto-Recovery trigger,
recovery image is not found or
is invalid.
2
7
Memory
Memory SPD failure
3
3
Memory
No memory detected
3
5
Memory
Modules incompatible or
invalid configuration
3
6
BIOS Recovery
On-demand trigger, recovery
image is not found.
3
7
BIOS Recovery
On-demand trigger, recovery
image is invalid.
NOTE:
For diagnostics pattern 2-amber, 8-white connects an external monitor to isolate between system board or graphics
controller failure.
Recovering the operating system
When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell
SupportAssist OS Recovery.
Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows operating
system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating
system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its
factory state.
You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their
primary operating system due to software or hardware failures.
For more information about the Dell SupportAssist OS Recovery, see
Dell SupportAssist OS Recovery User's Guide
at
www.dell.com/serviceabilitytools
. Click
SupportAssist
and then, click
SupportAssist OS Recovery
.
138
Troubleshooting
Summary of Contents for OptiPlex 3090 Ultra
Page 16: ...17 Lock the device and the stand cover 16 Stands ...
Page 17: ...18 Press the power button to turn on the device Stands 17 ...
Page 27: ...12 Slide the back cover along with the device into the stand until you hear a click Stands 27 ...
Page 28: ...13 Lock the device and the stand cover 28 Stands ...
Page 29: ...14 Press the power button to turn on the device Stands 29 ...
Page 39: ...Stands 39 ...
Page 40: ...40 Stands ...
Page 45: ...Stands 45 ...
Page 47: ...Stands 47 ...
Page 49: ...9 Slide and release the inner bar on the lower edge of the stand cover Stands 49 ...
Page 54: ...Large Height Adjustable Stand 54 Stands ...
Page 56: ...15 Lock the device and the stand cover 56 Stands ...
Page 57: ...16 Press the power button to turn on the device Stands 57 ...
Page 59: ...4 Disconnect the keyboard mouse network power and display cable from the device Stands 59 ...
Page 63: ...For 30 inch to 32 inch monitor Large height adjustable stand Stands 63 ...
Page 64: ...For monitors 32 inch Large height adjustable stand 64 Stands ...
Page 72: ...k Close the stand cover 72 Stands ...
Page 73: ...l Lock the device and the stand cover Stands 73 ...
Page 79: ...h Press the power button to turn on the device Stands 79 ...
Page 81: ...b Open the wall mount cover Stands 81 ...
Page 82: ...c Disconnect the keyboard mouse network power and display cable from the device 82 Stands ...
Page 83: ...d Snap open the wall mount bracket module from the slots on the wall mount Stands 83 ...
Page 90: ...Major components of your system 1 Cover 90 Removing and installing components ...