Chapter 3
Maintenance
©
National Instruments Corporation
3-3
Resetting the AC Mains Circuit Breaker
If your PXI-1000B is connected to an AC source and encounters an
over-current condition, the circuit breaker located on the rear panel will trip
to prevent damage to the mainframe. Complete the following steps to reset
the circuit breaker:
1.
Turn the power switch to the Standby position.
2.
Disconnect the AC line cord.
3.
Depress the circuit breaker to reset it.
4.
Reconnect the AC line cord.
5.
Turn the power switch to the On position.
If the circuit breaker trips again, complete the following steps:
1.
Turn the front panel power switch to the Standby position.
2.
Disconnect the mainframe from the AC mains power source.
3.
Remove all modules from the mainframe.
4.
Complete the test procedure described in the
section in Chapter 2,
.
5.
If any voltages are outside the acceptable limits, contact National
Instruments.
6.
If all voltages are within the acceptable limits, verify that your
PXI-1000B can meet the power requirements of your CompactPCI or
PXI modules. Overloading the chassis can cause the breaker to trip.
Refer to Appendix A,
.
7.
The over-current condition that caused the circuit breaker to trip
may be due to a faulty CompactPCI or PXI module. Refer to the
documentation that was supplied with the modules for troubleshooting
your modules.
