Sherwood RV-5030R Service Manual

SERVICE MANUAL
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Sherwood RV-5030R Specifications

General

Brand	Sherwood
Model	RV-5030R
Category	Stereo Receiver
Language	English

Summary

SAFETY PRECAUTIONS

AC Leakage Current Check

Procedure for checking AC leakage current on exposed metal parts.

SPECIFICATIONS

Audio Specifications

Performance specs for audio output, noise, and frequency response.

Radio and MPX Specifications

Specs for FM, AM tuning, MPX separation, and signal reception.

General & Power Requirements

Overall unit dimensions, weight, and power supply voltage/frequency options.

CIRCUIT DESCRIPTION

Microprocessor & I/O

Details of the microprocessor, its ports, and internal architecture.

Input and Output Terminal Functions

Description of terminal functions for various I/O ports.

Digital Tuning System

Description of the digital tuning system architecture and operation.

Control Key and Mode Switch Matrix

Operation of control keys for tuning, memory, and mode selection.

PROTECTION CIRCUITS

Speaker and Thermal Protection

Circuits protecting speakers and unit from overload or overheating.

ALIGNMENT PROCEDURES

AM IF and RF Alignment

Steps for aligning AM radio frequency and intermediate frequency circuits.

FM IF and MPX Alignment

Procedures for FM intermediate frequency and multiplex signal alignment.

BLOCK DIAGRAM

WIRING DIAGRAM

TROUBLESHOOTING

Symptoms and Remedies

Troubleshooting guide for common receiver issues and their solutions.

CABINET & CHASSIS PARTS LIST

EXPLODED VIEW I (CABINET & CHASSIS)

EXPLODED VIEW II (COMMANDER)

PRINTED CIRCUIT BOARDS

P.C.BOARD PARTS LIST

SEMICONDUCTOR LEAD IDENTIFICATION & INTERNAL DIAGRAM

IC Diagrams and Pinouts

Diagrams and lead identification for various integrated circuits.

SEMICONDUCTOR VOLTAGE CHART

SCHEMATIC DIAGRAM I