Servicing Power Supplies; Detecting Power Supply Failure; Power Supply Led Reference - Oracle Sun Fire X4240 Service Manual

3.4

Servicing Power Supplies

Some versions of the Sun Fire X4240 are equipped with redundant hot-swappable
power supplies. Redundant power supplies enable you to remove and replace a
power supply without shutting the server down, provided that the other power
supply is online and working.
If a power supply fails and you do not have a replacement available, leave the failed
power supply installed to ensure proper air flow in the server.
See Section 3.4.2, "Power Supply LED Reference" on page 3-15
information about power supply status LEDs.
The following topics are covered:
Section 3.4.1, "Detecting Power Supply Failure" on page 3-15
■
Section 3.4.2, "Power Supply LED Reference" on page 3-15
■
Section 3.4.3, "Removing a Power Supply" on page 3-16
■
Section 3.4.4, "Installing a Power Supply" on page 3-18
■
Note – CRU: This customer replaceable unit can be replaced by anyone.
3.4.1

Detecting Power Supply Failure

The following LEDs are lit when a power supply fault is detected:
Front and rear Service Required LEDs
■
Rear PS Failure LED on the bezel of the server
■
Failure LED on the faulty power supply
■
See Section 3.4.2, "Power Supply LED Reference" on page 3-15
information. See
Section 1.4, "Sun Fire X4240 Rear Panel Features" on page 1-9
about identifying and interpreting system LEDs.
3.4.2

Power Supply LED Reference

Each power supply contains a series of LEDs on the rear panel of the system.
Section 1.3, "Sun Fire X4240 Front Panel Features" on page 1-8
Chapter 3
for specific
for power supply LED
for more information
Servicing Customer-Replaceable Devices
and
3-15