Dell Precision 7820 Owner's Manual page 97

Tower
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Power Button LED State
Solid Amber
Solid White
Table 19. Diagnostic Indicator table
State
State Name
-
-
-
-
-
-
-
-
S1
RCM
Description
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.
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.
Power Light: Amber
Amber Blinking
Blinking
Pattern
2, 1
2 blinks followed by a
short pause, 1 blink,
long pause, then
repeats
2, 2
2 blinks followed by a
short pause, 2 blinks,
long pause, then
repeats
2, 3
2 blinks followed by a
short pause, 3 blinks,
long pause, then
repeats
2, 4
2 blinks followed by a
short pause, 4 blinks,
long pause, then
repeats
2, 5
2 blinks followed by a
short pause, 5 blinks,
long pause, then
repeats
Problem Description Suggested
Resolution
To troubleshoot the
Faulty System board
issue with system
board, contact Tech
support.
Bad system board,
Power Supply or
Power Supply
cabling
Bad system board,
Memory or
Processor
Bad coin cell battery
BIOS Checksum
Failure
Troubleshooting
If you can assist
to troubleshoot,
narrow down the
issue with PSU
BIST Test, reseat
cable.
If nothing works,
contact Tech
Support
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
If you can assist
to troubleshoot,
narrow down the
issue by
swapping a
known good coin
cell battery if
available.
If nothing works,
contact Tech
Support
System is in
Recovery Mode.
Flash latest BIOS
version. If
problem persists,
contact Tech
Support
97

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