Connectors, Switches, and LEDs
Table 4-9: System Board LEDs
Item Description Status
1 4-pin power connector Off = Processor installed.
Amber = Processor not installed.
2 Second 4-pin power connector Off = Power connector installed.
Amber = Power connector not
installed.
3 AC power Off = The AC power cord is not
plugged into the power supply or the
power supply failed.
Green = Power supply is on and
functioning.
4 CPU 1 pre-failure or failure Off = CPU functioning.
Amber = CPU failed or is missing.
5 Processor thermal Off = Processor temperature normal.
Amber = Thermal trip for processor 1
detected. Refer to POST error
messages for appropriate
instructions.
6 DIMM 4 failure Off = DIMM 4 functioning.
Amber = DIMM 4 failed.
7 DIMM 3 failure Off = DIMM 3 functioning.
Amber = DIMM 3 failed.
8 DIMM 2 failure Off = DIMM 2 functioning.
Amber = DIMM 2 failed.
9 DIMM 1 failure Off = DIMM 1 functioning.
Amber = DIMM 1 failed.
10 System thermal failure Off = Temperature is normal.
Amber = Temperature threshold
exceeded.
11 CPU fan failure Off = Fan is functioning.
Amber = Fan is not installed or has
failed.
12 System fan failure Off = Fan is functioning.
Amber = Fan is not installed or has
failed.
13 Integrated processor power module (PPM)
failure
Off = PPM is functioning.
Amber = PPM has failed.
HP ProLiant ML310 Server Maintenance and Service Guide 4-15
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