See "Running the DSA Preboot diagnostic programs" on page 80 for more information on running the
DSA Preboot program on the server.
• Troubleshooting by symptom
These tables list problem symptoms and actions to correct the problems. See "Troubleshooting by
symptom" on page 82 for more information.
Power-supply LEDs
The following minimum configuration is required for the server to start.
• One microprocessor in microprocessor socket 1
• One 4 GB DIMM on the system board
• One power supply
• Power cord
• Four cooling fans (fan 1, 2, 3, and 5)
AC power-supply LEDs
The following minimum configuration is required for the DC LED on the power supply to be lit:
• Power supply
• Power cord
Note: You must turn on the server for the DC LED on the power supply to be lit.
The following illustration shows the locations of the power-supply LEDs on the ac power supply.
System power LED
Locator batton / LED
Figure 52. AC power-supply LEDs
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.
Ethernet
Ethernet
activity LED
link LED
System error LED
AC power
LED (green)
DC power
LED (green)
Power-supply
error LED (yellow)
Chapter 3
.
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Troubleshooting