I/O Vrm; Cooling Subsystem; Cooling Subsystem Behavior; Table 5-20. I/O Power Events That Light Diagnostic Panel Leds - HP Integrity rx6600 User's & Service Manual

Troubleshooting

Cooling Subsystem

Table 5-19 Power Supply Conditions Mapped to Power LED States (Continued)
Power supply failure (includes overvoltage, overcurrent, overtemperature, and
fan failure)
The Power Supply Power LED is visible on the power supply's exterior face.

I/O VRM

Table 5-20 lists the I/O power events that light the diagnostic panel LEDs.
Table 5-20 I/O Power Events That Light Diagnostic Panel LEDs
Diagnostic
Sample IPMI Events
LEDs
I/O Power Type 02h, 02h:07h:03h
VOLTAGE_DEGRADES_TO
_NON_RECOVERABLE
Cooling Subsystem
The three fan cooling zones located within the chassis provide N+1 redundancy for the chassis using three
identical dual fan assembly FRUs. In turn, each dual fan assembly FRU provides additional N+1 redundancy
for the fan cooling zone it controls. Each dual fan assembly FRU is identified by the chassis as fans 1, 2, and 3
both for logging purposes and for fault identification on the diagnostic LED panel.
There are six fan cooling zones within the rx6600 chassis that provide N+1 redundancy for the chassis using
six identical dual fan assembly FRUs. In turn, each dual fan assembly FRU provides additional N+1
redundancy for the fan cooling zone it controls. Each dual fan assembly FRU is identified by the chassis as fan
1-6 both for logging purposes and for fault identification. Note, however, that three of the six total dual fan
assemblies are considered as internal FRUs and are identified by the chassis as fans1, 2, and 3 on the
diagnostic LED panel while the other three dual fan are considered as external FRUs identified as fans 4, 5,
and6 and do not have LEDs on the diagnostic LED panel.
External cooling fan FRU failures are identified visually by a single green LED on the dual fan assembly FRU
that is turned on when one or both of the fans fail; logged as an IPMI event by fan sensor logic; and identified
as a fan assembly FRU failure by the BMC turning on the appropriate LEDs on the front and diagnostic LED
panels.

Cooling Subsystem Behavior

The baseboard Management Controller (BMC) chip located on the Unified Core I/O board FRU controls fan
speed on ambient air temperatures, chip temperatures, server configuration, and fan operation or failure. Air
is drawn through the front of the chassis and pushed out the rear by the cooling fans. (Note that you can
display fan status remotely with the iLO 2 MP ps command.)
184
Power Supply Condition
Voltage on FRU
is inadequate
Cause Source
BMC
Power Supply
Power LED
Flashing Amber
(Slow ~ 1 Hz)
Notes
A voltage on the I/O
power assembly is out of
range (likely too low)
Chapter 5