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Expansion
Subsystem
Chapter 5 - Troubleshooting
AC Primary Input Voltage
Verify that the label near the power receptacle on the rear of the subsystem specifies the proper input voltage (115 VAC or 230 VAC).
! If the input voltage label is incorrect DO NOT power up the subsystem. Refer to Chapter 6 - Field Replaceable Units for instructions to remove the power supply and configure the input voltage.
DC Output Voltages
If a problem is suspected with the power supply in the Cubix Expansion Subsystem, use a voltmeter to check the voltages on the terminal strip on the backplane. Figure 5-1 shows the voltages present. If the voltages are not correct, contact Cubix Customer Service.
! Voltages are referenced to Ground (pin 4, 5, or 6).
All voltages within a range of plus or minus 5% are acceptable. The -5 VDC is acceptable within a plus or minus 10% range.
The thermal sensor monitors the temperature in the power supply bay. If it detects an abnormally high temperature, it will function as a circuit breaker and turn off power to the subsystem. If this happens, reset the thermal breaker by pressing the thermal sensor using a pointed device such as a pen. Check the operation of all the system fans. Insure that none of the cooling vents are blocked.
Figure 5-2 Location of Thermal Sensor
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by Cubix Corp., Carson City, NV, USA.
