Preboot blinking power button codes
Table 20. Power button LED state
Power Button LED State
Description
Off
Power is Off. LED is blank.
Blinking Amber
Initial State of LED at power up. See the table below for Blinking
Amber pattern diagnostic suggestions and possible failures.
Blinking White
System is in a low power state, either S1 or S3. This does not
indicate a fault condition.
Solid Amber
The second state of the LED at power up, indicates that the
POWER_GOOD signal is active and it is probable that the power
supply is fine.
Solid White
System is in S0 state. This is the normal power states of a
functioning machine. The BIOS will turn the LED to this states to
indicate it has started fetching op-codes.
Table 21. Diagnostic Indicator table
Power Light: Amber-White
Blinking
Amber/White Blinking
Pattern
Problem Description
Suggested Resolution
1-1
1 amber blink followed by a short
pause, 1 white blink, long pause,
then repeats
Faulty System board
To troubleshoot the issue with
system board, contact Tech
support.
1-2
1 amber blink followed by a short
pause, 2 white blinks, long
pause, then repeats
Bad system board, Power
Supply or Power Supply cabling
•
If you can assist to
troubleshoot, narrow down
the issue with PSU BIST
Test, reseat cable.
•
If nothing works, contact
Tech Support
1-3
1 amber blink followed by a short
pause, 3 white blinks, long
pause, then repeats
Bad system board, Memory or
Processor
•
If you can assist to
troubleshoot, narrow down
the issue by reseating
memory and swapping a
known good memory if
available.
•
If nothing works, contact
Tech Support
2-1
2 amber blinks followed by a
short pause, 1 white blink, long
pause, then repeats
Bad Processor
•
CPU configuration activity is
in progress or a CPU failure
was detected.
•
Contact Tech Support
•
If you can assist to
troubleshoot, narrow down
the issue by ensuring CPU 0
is installed, CPU0 and CPU1
is an idendical matching pair
and swapping a known good
CPUs if available.
•
If nothing works, contact
Tech Support
2-2
2 amber blinks followed by a
short pause, 2 white blinks, long
pause, then repeats
Motherboard: BIOS ROM failure • System is in Recovery
Mode.
122
Troubleshooting
Summary of Contents for D04X
Page 1: ...Dell Precision 7920 Tower Owner s Manual Regulatory Model D04X Regulatory Type D04X001 ...
Page 30: ...6 Rotate and lift the fan assembly away from the system 30 Removing and installing components ...
Page 65: ...Figure 1 Mandatory System Fan Removing and installing components 65 ...
Page 67: ...Mandatory System Fan Removing and installing components 67 ...
Page 68: ...68 Removing and installing components ...
Page 86: ...c Lift and remove the RAID controller battery 86 Removing and installing components ...