300 N9030B PXA Signal Analyzer Service Guide
Power Supply/Midplane Troubleshooting
A6 Power Supply Description
A6 Power Supply Description
Purpose
The A6 Power Supply assembly provides most all the necessary DC voltages
for the entire PXA signal analyzer to operate correctly. If any of the power
supplies are not within their operating voltages, the analyzer will not function
properly. The power supply outputs provide power to all the printed circuit
boards, microcircuit assemblies, front panel display and fans, any of which can
cause an over current condition if not operating correctly. The power supply
will remain on in an over current state for a minimum of 1 second. The power
supply will turn off no later than 5 seconds after the beginning of the over
current state. Any one output over current condition will latch the supply off
until the line voltage is removed from the rear panel AC power input connector
and then reconnected. The power supply assembly plugs into the A7 Midplane
Assembly from the rear of the instrument. (see Figure 10-1.)
Figure 10-1 Power Supply and Midplane
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