600 Chapter12
RF Section
High Band Problems
High Band Problems
1. If the low band is functioning, but amplitudes of signals >26.8 GHz
are wrong, check the A12 SBTX.
2. If the low band and millimeter band signals are correct, but
microwave band signals are wrong, check the A10 RYTHM.
3. Perform the steps located in “Control Latch for Band-Switch
Drivers” on page 615.
4. Troubleshoot the signal path. Refer to the power levels listed in
Figure 12-11 on page 631, RF Section Troubleshooting Block
Diagram.
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