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General| Tuning Range | FM, MW |
|---|---|
| Input Sensitivity | 2.5mV (MM), 150mV (line) |
| Channel Separation | 50dB (MM), 50dB (line) |
| Total Harmonic Distortion | 0.1% |
| Output | 150mV (line) |
| Speaker Load Impedance | 4Ω to 8Ω |
Details about power output, bandwidth, distortion, sensitivity, and controls for the audio section.
Technical specifications for FM reception, including tuning range, sensitivity, and distortion.
Technical specifications for AM reception, including tuning range and selectivity.
Specifications for power requirements, consumption, dimensions, and weight of the units.
Block diagram illustrating the audio signal path and components.
Block diagram showing the FM and AM tuner sections and their signal flow.
Block diagram detailing the Dolby FM and Dolby NR selector functions.
Block diagram for Dolby FM signal processing and selector.
Block diagram for Dolby NR selector during playback.
Block diagram for Dolby NR selector during recording (1).
Block diagram for Dolby NR selector during recording (2).
Details the principles behind S/N improvement using Dolby B in FM stereo.
Lists additional points related to Dolby FM system operation.
Instructions for adjusting the Dolby circuit, specifically input level.
Step-by-step guide for adjusting the input level of the Dolby IC.
Procedures for calibrating volume and Dolby meter levels.
Steps for adjusting the Dolby FM volume.
Instructions for adjusting the audio section, starting with power meter.
Procedure for adjusting the power meter in the audio section.
Adjustment steps for the driver circuit board, including DC offset and bias.
Instructions for tuning the tuner section, starting with FM adjustment.
Detailed steps for FM IF adjustment and tracking.
Detailed steps for AM IF adjustment and tracking.
Procedures for MPX (Multiplex) adjustments, including PLL VCO and separation.
Parts list and conductor side diagram for the AM/FM tuner circuit board.
Parts list and conductor side diagram for the illumination circuit board.
Parts list and conductor side diagram for the front-end pack.
Parts list and conductor side diagram for the equalizer circuit board.
Parts list and conductor side diagram for the driver circuit board.
Parts list and conductor side diagram for the tone control circuit board.
Parts list and conductor side diagram for the microphone amplifier circuit board.
Parts list and conductor side diagram for the RF power supply circuit board.
Parts list and conductor side diagram for the power relay circuit board.
Parts list and conductor side diagram for the power supply circuit board.
Parts list and conductor side diagram for the push switch circuit board.
Parts list and conductor side diagram for the Dolby NR circuit board.
Illustrations of connectors and pin assemblies.
Layout diagram of components on the top side of the unit.
Layout diagram of components on the bottom side of the unit.
Schematic diagram of the tuner section for different models.
Schematic diagram of the audio section for 8080DB/890DB models.
Schematic diagram of the audio section for 9090DB/990DB models.
Instructions for threading the dial cord for accurate tuning indication.
Procedure for attaching the dial pointer to the tuning shaft.
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