Diagnostic Led Behavior - Dell Precision 3460 Small Form Factor Service Manual

● View error messages that indicate if problems were encountered during the test
NOTE: Some tests are meant for specific devices and require user interaction. Ensure that you are present in front of the
computer when the diagnostic tests are performed.
For more information, see

Diagnostic LED behavior

Table 21. Diagnostic LED behavior
Blinking pattern
Amber
1
2
2
2
2
2
2
3
3
3
3
SupportAssist Pre-Boot System Performance
White
2
1
2
3
4
5
6
1
2
3
4
Check.
Problem description
Unrecoverable SPI Flash
Failure
CPU failure
System board failure (included
BIOS corruption or ROM
error)
No memory/RAM detected
Memory/RAM failure
Invalid memory installed
System board / Chipset
Error / Clock failure / Gate
A20 failure / Super I/O
failure / Keyboard controller
failure
CMOS battery failure
PCI or Video card/chip failure
BIOS Recovery image not
found
BIOS Recovery image found
but invalid
Suggested resolution
● Run the Dell Support
Assist/Dell Diagnostics
tool.
● If problem persists,
replace the system board.
● Flash latest BIOS version
● If problem persists,
replace the system board.
● Confirm that the memory
module is installed
properly.
● If problem persists,
replace the memory
module.
● Reset the memory module.
● If problem persists,
replace the memory
module.
● Reset the memory module.
● If problem persists,
replace the memory
module.
● Flash latest BIOS version
● If problem persists,
replace the system board.
● Reset the CMOS battery
connection.
● If problem persists,
replace the RTS battery.
Replace the system board.
● Flash latest BIOS version
● If problem persists,
replace the system board.
● Flash latest BIOS version
● If problem persists,
replace the system board.
Troubleshooting 95