Specifications

9
Is the fan running?
If yes, go to "To run the internal self-tests." If not, do the steps below.
The Low Voltage Power Supply has a thermal cut-out circuit. If the fan is
defective, the Low Voltage Power Supply shuts down when it gets too hot for
safe operation.
a
Disconnect the fan cable from the power supply.
b
Measure the fan voltage at the connector on the power supply.
See the following figure for location of the fan connector. If the fan
voltage is approximately +8 Vdc, replace the fan. If not, replace the
power supply.
Fan Connector
+5.25 V
adjust
-5.25 V
adjust
fan connector
Figure 7-10
Testing, Adjusting, and Troubleshooting
To check out the oscilloscope
7-45