HP Integrity rx3600 Server User Service Guide

Power supply CRU failures are identified visually by a single green LED that is turned off when one
or both of the power supplies fail. Power supply failures are also logged as IPMI events by voltage
sensor logic and identified as power supply CRU failures on the front LED panel.
The I/O VRM CRU, located beside the core I/O board CRU, provides all I/O subsystem DC power.
Power Subsystem Behavior
For rx3600 servers, each bulk power supply CRU provides 1200 watts of DC power from a nominal
120 V AC 50-60 Hz. The Baseboard Management Controller (BMC) chip located on the core I/O
board CRU controls the flow of +12 V DC power to the server CRUs. You can both control and
display power supply status remotely with the iLO 2 MP pc and ps commands, respectively.)
The server powers on as follows:
• The Power LED on the front panel glows steady amber when one or two bulk power supplies
are plugged into nominal AC voltage. The +3.3 VDC housekeeping voltage comes on and
stays on whenever AC power is present.
• The BMC, iLO 2 MP, flash memory, and chassis intrusion circuits are reset after the +3.3 V
DC housekeeping voltage stabilizes.
• The BMC monitors the Power button on the front panel.
• When the Power button is pressed or when a Wake on LAN (WOL) signal is asserted, the
BMC signals the bulk power supplies to fully power on.
• +12 V DC comes up and all the cooling fans and the various VRMs power on sequentially.
• The BMC signals that the server is ready to come out of reset.
• The server comes out of reset.
• The zx2 chip resets all components connected and the server begins the boot process.
System Power LED/Switch
The front panel system power LED indicates system power status. It is incorporated with the Power
button.
The Power button has a momentary switch that is recessed to prevent accidental powering on or
off.
If the OS is running, press the Power button for less than four seconds to gracefully shut down the
OS and power off the system. Press the Power button for greater than four seconds to power off
the system immediately. When the server is booting (before the system has passed
EFI_EXIT_BOOT_SERVICES), the BMC powers off the server immediately when you press the
button.
If the OS is not running or is hung, or the BMC is not responding, press and hold the Power button
for more than four seconds to power off the system.
To ensure that the system powers on correctly, the Power button must not be pressed again for four
seconds after it powers off.
Table 56 lists the power LED states.
Table 56 Power LED States
DefinitionFlash RateLED Color
No AC power to the systemOffNone
System power is onSteadyGreen
System is shut down, but AC and standby power are availableSteadyAmber
System Power (BPS and I/O VRM) 149