12
Intel Astor II Server Chassis Subassembly Product Guide
The temperature sensor on the backplane provides temperature information to the BMC (baseboard
management controller) on the server board through chassis service messages.
The backplane power control will power down a drive when a failure is detected and reported to
the SCSI bus. When a new drive is inserted, the power control waits a short time for the drive to
become fully seated and then applies power to the drive.
Power Supply
The 300 watt PFC (power factor correction) universal type power supply is designed to minimize
EMI. The supply operates within the following voltage ranges and is rated as follows:
100-120 V at 50/60 Hertz (Hz); 4.6 A maximum
200-240 V at 50/60 Hz; 2.3 A maximum
The DC output voltages of the power supply are +5 V, +12 V, +3.3 V, -5 V, -12 V, and
+5 V standby. Power to the server board is provided through the power cable to the 24-pin main
power connector.
Checking the Power Cord
WARNING
Do not attempt to modify or use a supplied AC power cord if it is not the
exact type required.
If a power cord supplied with the system is not compatible with the AC wall outlet in your region,
get one that meets the following criteria:
The cord must be rated for the available AC voltage and have a current rating that is at least
125% of the current rating of the system.
The connector that plugs into the wall outlet must be a grounding-type male plug designed
for use in your region. It must have certification marks showing certification by an agency
acceptable in your region.
The connector that plugs into the AC receptacle on the system power supply must be an IEC
320, sheet C13, type female connector.
In Europe, the cord must be less than 4.5 meters (14.76 feet) long, and it must be flexible
<HAR> (harmonized) or VDE certified cordage to comply with the system's safety
certifications.
System Cooling
The chassis includes four tachometer fans for cooling and airflow. One of these is the integrated
fan in the power supply.
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NOTE
The chassis side cover must be on the system for proper cooling.
