Flipping to the block diagram, he traced the signal path from the antenna jack. The Low-Noise Amplifier (LNA), the bandpass filters, the first mixer. His finger stopped at the RF front-end module—a tiny, surface-mount chip designated IC1001. The troubleshooting flowchart, dense with voltage readings and waveform diagrams, pointed directly to it. “If no signal passes the LNA, suspect IC1001 or surrounding passives.”
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