Keysight N9038A MXE Service Guide 301
Front End Control
A15 Front End Control Assembly Troubleshooting
13.Verify that the amplitude of the 300 MHz signal at A15 J901 is equal to
that shown in Figure 8-16, +/- 3 dB.
Figure 8-16 A15 Enhanced Front End Control Assembly 300 MHz IF Output
14.If the level is not correct, measure the input signal level coming to A15
J902 out of W14, as shown in Figure 8-6. It should be approximately 6 dB
higher than the level shown in Figure 8-16.
If the input signal is at the correct level, and the output is not, the A15
Enhanced Front End Control Assembly has a problem.
If the input signal is not at the correct level see Chapter 6, “RF
Downconverter Section.” for instructions on how to determine the cause
of this problem.
15.Reconnect W52 to A15 J901 as shown in Figure 8-6.
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