Dell G5 5090 Service Manual - Page 72

Table 15. Power LED summary, Table 16. Amber LED blinking failures

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Table 15. Power LED summary Amber LED state White LED state Off Off Off Blinking Previous State Previous State Blinking Off Steady Off Off Steady Table 16. Amber LED blinking failures Amber LED state White LED state 2 1 2 2 2 3 Table 17. States Under Host BIOS Control Amber LED state White LED state 2 5 2 6 2 7 3 1 System state S4, S5 Description • Hibernate or Suspend to Disk (S4) • Power is off (S5) S1, S3 System is in a low-power state, either S1 or S3. This does not indicate a fault condition. S3, no PWRGD_PS S0, no PWRGD_PS This entry provides for the possibility of a delay from SLP_S3# active to PWRGD_PS inactive. Boot Failure - The computer is receiving electrical power, and power supplied by the power supply is normal. A device might be malfunctioning or incorrectly installed. See the table below for Amber Blinking Pattern diagnostics suggestion and possible failures. S0, no PWRGD_PS, Code fetch = 0 Boot Failure - This is a system fault error condition, including the power supply. Only the +5VSB rail on the power supply is working correctly. S0, no PWRGD_PS, Code fetch = 1 This indicates that the host BIOS has started to execute and the LED register is now writable. System state System board failure System board, power-supply unit, or cabling failure System board, memory, or processor failure System state BIOS state 1 BIOS state 2 BIOS state 3 BIOS state 4 Description BIOS Post code (Old LED pattern 0001) Corrupt BIOS BIOS Post code (Old LED pattern 0010) Processor configuration error or processor failure BIOS Post code (Old LED pattern 0011) Memory failure BIOS Post code (Old LED pattern 0100) PCI or video card or chip failure. 72 Troubleshooting

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Table 15. Power LED summary
Amber LED state
White LED state
System state
Description
Off
Off
S4, S5
•
Hibernate or Suspend to
Disk (S4)
•
Power is off (S5)
Off
Blinking
S1, S3
System is in a low-power state,
either S1 or S3. This does not
indicate a fault condition.
Previous State
Previous State
S3, no PWRGD_PS
This entry provides for the
possibility of a delay from
SLP_S3# active to PWRGD_PS
inactive.
Blinking
Off
S0, no PWRGD_PS
Boot Failure - The computer is
receiving electrical power, and
power supplied by the power
supply is normal. A device might
be malfunctioning or incorrectly
installed. See the table below for
Amber Blinking Pattern
diagnostics suggestion and
possible failures.
Steady
Off
S0, no PWRGD_PS, Code fetch
= 0
Boot Failure - This is a system
fault error condition, including
the power supply. Only the
+5VSB rail on the power supply
is working correctly.
Off
Steady
S0, no PWRGD_PS, Code fetch
= 1
This indicates that the host
BIOS has started to execute
and the LED register is now
writable.
Table 16. Amber LED blinking failures
Amber LED state
White LED state
System state
2
1
System board failure
2
2
System board, power-supply unit, or cabling
failure
2
3
System board, memory, or processor failure
Table 17. States Under Host BIOS Control
Amber LED state
White LED state
System state
Description
2
5
BIOS state 1
BIOS Post code (Old LED
pattern 0001) Corrupt BIOS
2
6
BIOS state 2
BIOS Post code (Old LED
pattern 0010) Processor
configuration error or processor
failure
2
7
BIOS state 3
BIOS Post code (Old LED
pattern 0011) Memory failure
3
1
BIOS state 4
BIOS Post code (Old LED
pattern 0100) PCI or video card
or chip failure.
72
Troubleshooting