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Explains the AM tuner's circuit design, front end, and IF amplifier stages for signal reception.
Provides troubleshooting guidance for the AM tuner, focusing on reception issues and signal strength meter.
Explains the circuit design of the FM tuner section, covering front end, IF amplifier, and audio amplifier stages.
Offers troubleshooting steps for FM tuner issues, including no reception and stereo separation problems.
Details the alignment procedure for the AM front end, including oscillator coil and antenna coil adjustments.
Describes the alignment process for the AM IF amplifier, requiring a sweep generator.
Explains how to adjust the local oscillator for the FM front end using a signal generator.
Outlines the FM tracking alignment steps, adjusting coils and capacitors for maximum output.
Details the FM IF amplifier alignment, focusing on IF transformers and discriminator transformer adjustments.
Covers the FM stereo demodulator adjustment for stereo separation using signal generators and oscilloscopes.
Describes the alignment procedure for the FM sub-IF amplifier, adjusting cores for maximum signal strength meter deflection.
Provides troubleshooting for audio output issues, including no output, distorted signal, and a note on signal tracing.
Explains the function and design of the protector relay circuit, which prevents 'POP' sounds.
Offers troubleshooting steps for the protector relay circuit, covering no output and 'POP' noise appearance.
Details the regulated power supply circuit, its function in providing stable DC current to various units.
Provides troubleshooting guidance for the regulated power supply, covering no output, excessive output, and ripple issues.
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