System Diagnostic Lights - Dell Vostro 3681 Service Manual

System diagnostic lights

Power-supply diagnostics light
Indicates the status of the power-supply in either of the two sates:
● Off: No Power
● On: Power is supplied.
Power button light
Table 16. 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 17. Diagnostics LED codes
Diagnostic light codes
1,2
2,1
2,2
2,3
2,4
2,5
2,6
3,1
3,2
3,3
3,4
3,5
3,6
3,7
70 Troubleshooting
System state
● S4
● S5
S0
Problem description
Unrecoverable SPI flash failure
CPU failure
System board failure, corrupt BIOS, ROM error
No memory/RAM detected
Memory/RAM failure
Invalid Memory installed
System board error, chipset error, clock failure, gate A20 failure, super I/O
failure, keyboard controller failure
CMOS battery failure
PCIe or video card/chip failure
Recovery Image not found
Recovery Image found but invalid
Power Rail Failure
Paid SPI volume error
Intel (ME) Management Engine error
Description
There is in Hibernate or Off state.
Working state
Various sleep states or No POST
Failure to POST