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Sansui eight-deluxe Service Manual

Sansui eight-deluxe
46 pages
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Sansui eight-deluxe Specifications

General IconGeneral
Power Output60 watts per channel into 8Ω (stereo)
Total Harmonic Distortion0.3% (at rated power)
Input Sensitivity (phono)2.5mV
Input Sensitivity (line)150mV
Signal to noise ratio70dB (MM), 80dB (line)
Tuning Range (FM)87.5-108MHz
Tuning Range (AM)530-1605kHz
Speaker Impedance4 to 16Ω
Channel separation50dB

Summary

Specifications

Audio Section Specifications

Detailed specifications for the audio output power, sensitivity, and distortion characteristics.

Tuner Section Specifications

Technical specifications for FM and AM tuning range, sensitivity, selectivity, and response.

Other Specifications

Specifications for semiconductors, power requirements, dimensions, and weight.

Block Diagram and Level Diagram

Block Diagram

Visual representation of the unit's internal circuitry and signal flow between modules.

Level Diagram

Graphical illustration of signal levels at various points within the audio signal path.

Alignments and Adjustments

Driver Circuit Board Adjustment

Procedure for setting DC zero volts and bias current on the driver circuit board.

FM IF Alignment

Steps for aligning the FM Intermediate Frequency circuit for optimal performance.

FM Dial Calibration and RF Alignment

Procedure for calibrating the FM dial scale and aligning RF circuits.

FM Signal Meter, Mono Distortion, Tune Meter and Muting Adjustment

Steps for adjusting FM signal meter, distortion, tune meter, and muting functions.

MPX Alignment

Procedure for aligning the Multiplex (MPX) circuit for stereo signal processing.

AM IF, Dial Calibration, RF and Signal Meter Alignment

Steps for aligning AM IF, dial calibration, RF, and signal meter circuits.

Threading of Dial Cord

Dial Pointer-Driving Mechanism

Instructions for threading the dial cord for the pointer mechanism.

Variable Capacitor-Driving Mechanism

Instructions for threading the dial cord for the variable capacitor mechanism.

Attachment of Dial Pointer

Procedure for attaching and setting the dial pointer correctly.

Troubleshooting Chart

5-1. Troubleshooting on Power Supply Section

Guide for diagnosing and resolving power supply related issues.

5-2. Troubleshooting on Audio Section

Steps for identifying and fixing problems within the audio circuits.

5-3. AUX Inoperative

Troubleshooting steps for when the AUX input is not functioning.

5-4. PHONO Inoperative

Guide for diagnosing and resolving issues with the PHONO input.

5-5. FM Inoperative

Troubleshooting steps for when the FM reception is not working.

5-6. FM Muting Circuit Inoperative

Steps to troubleshoot issues with the FM muting circuit.

5-7. No Channel Separation on FM Stereo Broadcasting

Guide for fixing problems with FM stereo channel separation.

5-8. AM Inoperative

Troubleshooting steps for when the AM reception is not working.

Parts Locations and Parts List

6-1. F-1419A FM IF Circuit Board

Component layout and parts list for the FM IF circuit board.

6-2. F-1261C FM MPX Circuit Board

Component layout and parts list for the FM MPX circuit board.

6-3. F-1417D AM Circuit Board

Component layout and parts list for the AM circuit board.

6-13. Other Parts (Top Side)

List and location of various components found on the top side of the unit.

6-14. Other Parts (Bottom Side)

List and location of various components found on the bottom side of the unit.

Packing List

Accessory Parts List

Maintenance

9-1. Voltage Adjustment

Procedure for adjusting the unit's voltage selector for different power sources.

Schematic Diagram of Tuner Section

Schematic Diagram of Audio Section

Replacement of Main Parts

12-1. Tuner Section

Instructions for removing and replacing the tuner section components.

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