IBM System x3750 M4 Type 8733, Installation And Service Manual

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Power-supply LEDs
The following minimum configuration is required for the AC LED on the power
supply to be lit:
v
Power supply
v
Power cord
v
Appropriate input power from the power source
The following minimum configuration is required for the server to start:
v
One microprocessor in microprocessor socket 1
v
One 4GB DIMM in a DIMM connector that is associated with microprocessor
socket 1 on the system board
v
One power supply
v
Power cord
v
Six cooling fans
The following illustration shows the locations of the power-supply LEDs.
The following table describes the problems that are indicated by various
combinations of the power-supply LEDs and the power-on LED on the operator
information panel and suggested actions to correct the detected problems.
Power-supply LEDs
Description Action Notes AC DC Error
On On Off Normal operation The server is
functioning
correctly.
Off Off Off No ac power to the
server or a problem
with the ac power
source.
1.
Check the ac power to the
server.
2. Make sure that the power
cord is connected to a
functioning power source.
3. Restart the server. If the
error remains, check the
power-supply LEDs.
4. Replace the power-supply.
This is a normal
condition when no
ac power is present.
Off Off On No input power to the
power supply or the
power-supply has
detected an internal
problem.
v
Make sure that the power
cord is connected to a
functioning power source.
v
Replace the power supply.
This happens only
when a second
power supply is
providing power to
the server.
Off On Off Faulty power-supply Replace the power supply.
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System x3750 M4 Types 8722 and 8733: Installation and Service Guide