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Sansui 990 User Manual

Sansui 990
28 pages
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Sansui 990 Specifications

General IconGeneral
Tuning RangeFM, MW
Input Sensitivity2.5mV (MM), 150mV (line)
Output150mV (line)
Power Output80 W per channel into 8Ω (stereo)
Total Harmonic Distortion0.1%
Speaker Load Impedance4Ω to 16Ω
Channel Separation50dB (line)

Summary

Specifications

Audio Section Specifications

Details power output, bandwidth, distortion, and input sensitivity for the audio section.

FM Section Specifications

Covers tuning range, sensitivity, S/N ratio, selectivity, and image rejection for FM.

AM Section Specifications

Details tuning range, sensitivity, selectivity, and image rejection for AM.

Alignments and Adjustments

Driver Circuit Board Adjustments

Adjustments for DC voltage and bias current on the driver circuit board.

FM Adjustment & Alignment

Procedures for adjusting FM tuning, muting, and sweep width.

AM IF Adjustments & Tracking

Steps for aligning IF coils and tracking for AM reception.

MPX Alignment

Adjustments for MPX circuit, separation, and distortion.

Operation Block Diagrams

Troubleshooting Charts

Audio Section Troubleshooting

Common audio circuit problems, defective parts, and potential causes.

Tuner Section Troubleshooting

Common tuner circuit problems, defective parts, and potential causes.

Parts Location and Lists

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