Dell OptiPlex 7090 Service Manual page 87

Table 30. Power button LED status
Power button LED state
Off
Solid White
Solid Amber
Blinking Amber/White
This platform relies on the Power button LED light blinking in an amber/white pattern to determine a failure as listed in the
following table:
NOTE:
The blinking patterns consists of two numbers (representing First Group: Amber blinks, Second Group: White blinks).
● First Group: The Power button LED light blinks Amber, 1 to 9 times followed by a short pause with LED off for a couple
of seconds.
● Second Group: The Power button LED light then blinks White, 1 to 9 times, followed by a longer pause before the next
cycle starts again after a short interval.
.
Example: No Memory detected (2,3). Power button LED blinks 2-times in Amber followed by a pause, and then blinks 3-times in
White. The Power button LED will pause for few seconds before the next cycle repeats itself again.
Table 31. Diagnostic LED status
Blinking pattern
Amber White
1 1
1 2
1 5
2 1
2 2
2 3
2 4
2 5
System state
● S4
● S5
S0
Problem description
TPM Detection Failure
Unrecoverable SPI flash failure
i-Fuse failure: EC unable to program i-Fuse
CPU failure
System board failure (including BIOS
corruption or ROM error)
No memory/RAM detected
Memory/RAM failure
Invalid Memory installed
Description
There is in Hibernate or Off state.
Working state
Various sleep states or No POST
Failure to POST
Suggested resolution
● Replace the system board.
● Replace the system board.
● This error is only applicable for
factory testing.
● Run the Intel CPU diagnostics
tools.
● 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.
Troubleshooting 87