Power-supply LEDs
The following minimum configuration is required for the DC LED on the power
supply to be lit:
v Power supply
v Power cord
The following minimum configuration is required for the server to start:
v One microprocessor in microprocessor socket 1
v One 2 GB DIMM (per microprocessor) on the system board
v One power supply
v Power cord
v Four cooling fans
The following illustrations show the locations of the power-supply LEDs for fixed
and redundant models respectively.
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 NotesAC DC Error
On On Off Normal operation
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.
114 System x3530 M4 Type 7160: Installation and Service Guide
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