Dell Precision 3930 Rack - States Under Host BIOS Control

However, if the computer fails the POST, the computer emits a series of LED codes during the start-up. The system LED is integrated on
the Power button.
The following table shows dierent light patterns and what they indicate.
Table 4. States Under Host BIOS Control
Amber LED state Fault Description Faults Recommendation for Tech Support
1, 1 Bad MBD BAD MBD – Rows A, G, H, I and J from table
12.4 of SIO Spec- Pre-POST indicators
Make sure PSU stays o when this happen
or it might just be a tripping system. If truly is
the 1-1 blink code, replace MB.
1, 2 Bad MB, PSU or
cabling
Bad MBD, PSU or PSU cabling -Rows B, C and
D of table 12.4 SIO spec
Make sure all PSU cable, control and power
are all connected. Remove PSU and test
BIST button outside of the system rst, if
failed, replace PSU. If not, install back the
PSU and test the BIST button again. If failed,
replace motherboard.
1, 3 Bad MBD, DIMMS
or CPU
Bad MBD, DIMMS or CPU- Rows F and K
from table 12.4 of SIO spec
Make sure PSU stays ON when this happen
or it might just be a false alarm. If truly is the
1-3 blink code, replace MB.
2, 1 CPU CPU failure Make sure a CPU is installed in primary
socket. Check for CPU gold pad dirt/nger
prints. Try a known good CPU on failing
system. If still cannot resolve issue, replace
motherboard.
2, 2 Motherboard:
BIOS ROM failure
Motherboard, covers BIOS corruption or ROM
error
Power o system and install RTC_RST
jumper. Remove jumper and power back on
to see if issue persist. Make sure system
stays ON and 2-2 code repeats when this
happen or it might just be a false alarm. If
truly is the 2-2 blink code, replace MB.
2, 3 Memory No Memory/RAM detected Make sure a supported DIMM is installed. Try
dierent DIMM slots. Try knonw good DIMM
stick. If still cannot resolve issue, replace
motherboard.
2, 4 Memory Memory/RAM failure Make sure a supported DIMM is installed. Try
dierent DIMM slots. Try knonw good DIMM
stick. If still cannot resolve issue, replace
motherboard.
2, 5 Memory Invalid memory installed Make sure a supported DIMM is installed. Try
dierent DIMM slots. Try knonw good DIMM
stick. If still cannot resolve issue, replace
motherboard.
2, 6 Motherboard:
Chipset
Motherboard / Chipset Error Power o system and install RTC_RST
jumper. Remove jumper and power back on
to see if issue persist. If yes, power o
system and remove coin cell battery. Install
back battery and power back on to see if
issue persist. If yes, replace motherboard.
3, 2 PCI / Video PCI or Video card/chip failure Swap monitor/Video cable/GFX card. Try
GFX card only in slot 2 and slot 4. If not
resolved, replace motherboard.
3, 3 BIOS Recovery 1 Recovery Image not found Power o system and install RTC_RST
jumper. Remove jumper and power back on
to see if issue persist. If yes, power o
76 Troubleshooting