Micros Systems PCWS 2015, Руководство по установке

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PCWS 2015 Setup Guide - 2nd Edition 3-7
What’s Inside?
Disassembling the PCWS 2015
Power Supply Cover and Fans
Figure 3-5 shows the Power Supply Cover and 60mm CPU fan positioned over
the base. The CPU fan speed is controlled by a sensor located near the CPU.
The CPU fan draws ambient air in through slots at the front of the base. The
power supply cover forms a duct to direct the incoming air across the heat pipe
radiator and power supply before it exits the unit on the left side of the base.
The CPU fan runs at full speed at start-up. After the operating system starts,
the CPU fan slows to an inaudible 2500 RPM and runs continuously.
Figure 3-5: PCWS 2015 Fan Operation
Should the CPU thermal zone trip point value exceed 47°C, the fan speed
increases to compensate. Increasing the fan speed cools the CPU thermal zone
and eventually, when the trip point drops below 47°C, the CPU fan slows to
2500RPM.
The 30mm System Fan is located on the right side of the base, just in front of
the right speaker. The System Fan is controlled by a sensor located near the
SODIMM1 Socket. The SYS fan runs only when necessary, drawing ambient
air across the SO-DIMM sockets and the remainder of the System Board
before exiting the right side of the base.
The System Fan will be removed after the first 1000 units.