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9C214-2 Power Supply Operation
Diagnostic Controller
The diagnostic controller is composed of a Z-80 microprocessor and it's
supporting logic. The diagnostic controller is designed to monitor the power
supply's input and output power parameters as well as the temperature and fan
status. In addition, the diagnostic controller adjusts fan speed and controls the
LANVIEW diagnostic LEDs. The information gathered by the diagnostic
controller is available to the network manager via the LCD on the 9C300-1
Environmental Module, as well as local and remote management. If the
diagnostic controller fails, the 9C214-2 Power Supply has been designed to
continue to function and supply power to the system.
Internal Temperature Sensor
Each 9C214-2 Power Supply has a built-in temperature sensor for monitoring its
own internal temperature. The results of the monitoring are available to the
network manager via the LCD on the 9C300-1 Environmental Module, as well as
local and remote management.
Power Supply Cooling
Each 9C214-2 Power Supply includes an internal cooling fan. The diagnostic
controller monitors the internal temperature of the power supply and increases or
decreases the fan speed based on that temperature. If the diagnostic controller
fails, fan speed defaults to 100% to ensure protection of the power supply.
LANVIEW LEDs
The LANVIEW LEDs on the back of the 9C214-2 Power Supply can be used as an
aid in troubleshooting.
There are three LANVIEW LEDs visible to the user (Figure 3-1):
• PWR Status LED
• SMB Status LED
• Power Supply Level Indicator LED
3-2
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