Appendix A: Troubleshooting
134
POST
code 1-4
(LSB, bit1,
bit2, MSB)
Display
boot 80
POST code
Left rear of
board
Each LED
can be
Off,
Green,
Amber,
Red
See the POST code
table
Fan Pack
Fault
Warn on
fan failure
Front center
board
Amber On = Fault
CPU 1 & 2
Fan Fault
Identify fan
failure
Front center
board
Amber On = Fault
CPU 1 & 2
Fan Fault
Identify
processor
failure
1” behind
processor
socket
Amber On = Fault
5v
Standby
Identify 5v
standby
power on
state
Front left
board
Amber On = 5v standby
power on
Power
LED
Identify the
power state
of the
system
Control
panel
Green • Off = Power is
off (off or S5)
• On = Power on
or S0)
• Slow Blink =
Low power
state (S1 - S3)
LED Name Function Location Color Correction
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