Lenovo System x3850 X6 Installation And Service Manual page 172

Power-supply LEDs
This topic provides the location of the power supply LEDs.
The following minimum configuration is required for the ac power LED on the power supply to be lit:
• Power supply
• Power cord
• Appropriate input power from the power source
The following minimum configuration is required for the 4-socket server to start:
• One compute book and one 4 GB DIMM in DIMM connector 9.
• The standard I/O book
• The storage book
• One power supply
• Power cord
The following minimum configuration is required for the 8-socket (x3950 X6) server to start:
• A minimum of four compute books (two in each node) with E7-8xxx microprocessors. The
microprocessors must be of the same cache size, type, and clock speed.
• The 8-socket chassis
• Two standard I/O books
• Two storage books
• A minimum of four power supplies (two power supplies in each node)
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 front operator panel and suggested actions to correct the detected
problems.
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System x3850 X6 and x3950 X6 Installation and Service Guide
AC power
Power
LED (green)
connector
DC power
LED (green)
Power supply
error LED
(yellow)