Power-Supply Leds - IBM System x3650 M4 Type 7915 Problem Determination And Service Manual

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
Note: You must turn on the server for the DC LED on the power supply to be lit.
The following minimum configuration is required for the server to start:
v One microprocessor in microprocessor socket 1
v One 2 GB DIMM on the system board
v One power supply
v Power cord
v Three cooling dual-motor hot-swap fans
v One PCI riser-card assembly in PCI connector 2
The following illustration shows the locations of the power-supply LEDs on the ac
power supply.
The following table describes the problems that are indicated by various
combinations of the power-supply LEDs on an ac power supply and suggested
actions to correct the detected problems.
AC power-supply LEDs
AC DC
On On
Off Off
Off Off
Error (!) Description
Off Normal operation.
Off No ac power to the
server or a problem
with the ac power
source.
On The power supply
has failed.
Action
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. If the problem remains,
replace the power-supply.
Replace the power supply.
AC power
LED (green)
DC power
LED (green)
Power-supply
error LED (amber)
Notes
This is a normal
condition when no ac
power is present.
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Chapter 3. Diagnostics