Dell Precision 3431 Small Form Factor Service Manual

Table 5. Power LED summary
Amber LED state White LED state System state Notes
Off Off S5
Off Blinking S3, no PWRGD_PS
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
Steady Off S0, no PWRGD_PS, Code fetch
= 0
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 6. Amber LED blinking failures
Amber LED state White LED state System state Notes
2 1 Bad MBD Bad MBD - Rows A, G, H, and J
from table 12.4 of SIO Spec -
Pre-Post indicators [40]
2 2 Bad MB, PSU or cabling Bad MBD, PSU or PSU cabling -
Rows B, C and D of table 12.4
SIO spec [40]
2 3 Bad MBD, DIMMS, or CPU Bad MBD, DIMMS or CPU -
Rows F and K from table 12.4 of
SIO spec [40]
2 4 Bad coin cell Bad coin cell - Row M of table
12.4 in SIO spec [40]
Table 7. States Under Host BIOS Control
Amber LED state White LED state System state Notes
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) CPU config or
CPU failure.
2 7 BIOS state 3 BIOS Post code (Old LED
pattern 0011) MEM config in
process. Appropriate mem
modules detected but failure has
occurred.
3 1 BIOS state 4 BIOS Post code (Old LED
pattern 0100) Combine PCI
device config or failure with
video sub sytem config or failure.
BIOS to eliminate 0101 video
code.
3 2 BIOS state 5 BIOS Post code (Old LED
pattern 0110) Combine storage
and USB config or failure. BIOS
to eliminate 0111 USB code.
Troubleshooting your computer 91

Dell Precision 3431 Small Form Factor Specifications

General

Brand	Dell
Model	Precision 3431 Small Form Factor
Category	Desktop
Language	English