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Sansui 4000 Service Manual

Sansui 4000
28 pages
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Sansui 4000 Specifications

General IconGeneral
Total Harmonic Distortion0.8%
Damping Factor30
Channel Separation50dB
Speaker Load Impedance4Ω to 16Ω
Frequency Response20Hz to 20kHz
Input Sensitivity2.5mV (MM), 150mV (line)

Summary

General Troubleshooting Chart

Disassembly Procedure

Block Diagram

Alignment Procedures

Test Points

Diagrams illustrating key test points for unit calibration and troubleshooting.

FM Alignment Procedure

Step-by-step guide for calibrating the FM receiver section for optimal performance.

FM Multiplex Alignment Procedure

Detailed steps for aligning the FM stereo multiplex decoder circuits.

AM Alignment Procedure

Instructions for performing alignment on the AM receiver section of the tuner.

Current Adjustment

Procedure for adjusting the quiescent current in amplifier stages.

Output Adjustment

Steps to adjust audio output levels and ensure proper signal clipping.

Protector Adjustment

Procedure for setting the DC protection circuit threshold.

Printed Circuit Sheets and Parts Lists

F-1169 <EQUALIZER AMP. BLOCK>

Component list and schematic for the Equalizer Amplifier module.

F-1149 <TONE CONTROL BLOCK>

Component list and schematic for the Tone Control module.

F-1186 <HIGH-LOW FILTER BLOCK>

Component list and schematic for the High-Low Filter module.

F-1155 <MUTING BLOCK>

Component list and schematic for the Muting module.

F-1178 <ACCESSORIES BLOCK>

Component list and schematic for the Accessories module.

F-1176 <PROTECTOR BLOCK>

Component list and schematic for the Protector module.

F-1187 <RIPPLE FILTER BLOCK>

Component list and schematic for the Ripple Filter module.

F-1214 <FM IF BLOCK>

Component list and schematic for the FM IF Amplifier module.

F-1185 <MULTIPLEX BLOCK>

Component list and schematic for the FM Multiplex Stereo Decoder module.

F-10382 <AM IF BLOCK>

Component list and schematic for the AM IF Amplifier module.

F-1150 <DRIVER AMP. BLOCK>

Component list and schematic for the Driver Amplifier module.

Other Parts Chart and List

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