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Pioneer SX-838 Service Manual

Pioneer SX-838
70 pages
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Table of Contents

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Pioneer SX-838 Specifications

General IconGeneral
Power Output50 watts per channel into 8Ω (stereo)
Frequency Response10Hz to 50kHz
Tuning RangeFM, MW
Input Sensitivity2.5mV (MM), 150mV (line)
Output150mV (line)
Speaker Load Impedance4Ω to 16Ω
Semiconductors3 x IC
Total Harmonic Distortion0.3%
Damping Factor40 (8 ohms, 1kHz)

Summary

Specifications

Front Panel Facilities

Connection Diagram

Antenna and Input Connections

Diagram showing how to connect FM/AM antennas, turntables, and tape decks.

Speaker and External Device Connections

Illustrates connecting speaker systems and other external audio equipment.

Block Diagram

Circuit Description

Disassembly

Alignment Procedure

FM Section Alignment

Procedure for aligning the FM receiver section using signal generators.

FM MPX Section Alignment

Steps for aligning the FM multiplex (MPX) decoder for optimal stereo reception.

AM Section Alignment

Procedure for aligning the AM receiver section for accurate tuning.

Power Amplifier Section Alignment

Steps for adjusting and aligning the power amplifier for optimal output.

Exploded View and Parts List

Schematic Diagrams, P.C. Board Patterns and Parts List

13.2 Tuner Assembly Schematics and Parts

Detailed schematic and parts list for the tuner assembly.

13.3 Audio Amplifier Stages Schematics and Parts

Schematics and component lists for equalizer, mic, control, power amps, and PSU.

Schematic Diagrams, P.C. Board Patterns and Parts List for 220V Only Model

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