9
Is the fan running?
If yes, go to “To perform self-tests.” If not, do the steps below.
The LVPS has a thermal cut-out circuit. If the fan is defective, the LVPS
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, using a
voltmeter.
If the fan voltage is less than –5.0 Vdc, replace the fan. If not, replace
the power supply.
Testing, Adjusting, and Troubleshooting the Analyzer
To troubleshoot the logic analyzer
167
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