User`s guide

Figure 6-1. Front and Rear Chassis View
6.2 Control Panel
The control panel (located on the front of the chassis) must be connected to the JF1
connector on the serverboard to provide you with system status indications. A
ribbon
cable has bundled these wires together to simplify the connection. Connect the cable from
JF1 on the serverboard to the Control Panel PCB (printed circuit board). Make sure the
red wire plugs into pin 1 on both connectors. Pull all excess cabling out of the airflow
path. The LEDs inform you of system status.
See Chapter 3 for details on the LEDs and the control panel buttons. Details on JF1 can
be found in Chapter 5.
6.3 System Fans
Three 8-cm hot-swap fans provide the cooling for the system. It is very important that the
chassis top cover is properly installed and making a good seal in order for
the cooling air
to circulate properly through the chassis and cool the components. See Figure 6-2.
System Fan Failure
Fan speed is controlled by system temperature via IPMI. If a fan fails, the remaining fans
will ramp up to full speed and the overheat/fan fail LED on the control panel will turn on.
Replace any failed fan at your earliest convenience with the same type and model (the
system can continue to run with a failed fan). Remove the top chassis cover while the
system is still running to determine which of the fans has failed.
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bullx R423-E3 - Installation and User's Guide