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Troubleshooting
Troubleshooting Assembly–Level Problems
605 Sweep Lock
1. Using an oscilloscope with high input impedance, measure the center pin of A9J9.
A positive and negative going signal should be present.
• If the signal is present at A9J9, replace the A9 YIG Driver.
2. If the signal is not present at A9J9, measure the center pin of J1032 on the motherboard.
• If the signal is present, replace the cable.
• If the signal is not present, replace the A6 Frac–N.
Source Setup Oscilloscope
Setup
Start: 5 GHz 10 ms/div
Stop: 10 GHz 5V/div
Sweep: Freq 1 MΩ
Sweep
Time:
Auto
Sweep
Repeat:
Continuo
us
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