EasyManua.ls Logo

Yamaha M-50 Service Manual

Yamaha M-50
25 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
Question and Answer IconNeed help?

Do you have a question about the Yamaha M-50 and is the answer not in the manual?

Yamaha M-50 Specifications

General IconGeneral
TypeStereo Power Amplifier
Input Sensitivity1V
Signal-to-Noise Ratio120 dB
Dimensions435 x 150 x 400 mm (W x H x D)
Power Output120 watts per channel into 8Ω (stereo)

Summary

Front Panel Controls

Power Switch and Meter Controls

Description of the power switch and meter operation controls.

Protection Indicator and Speaker Controls

Description of the protection indicator and speaker selection controls.

Peak Power Indicators

Explanation of the peak power indicator lights.

Rear Panel Layout by Model

US and Canadian Models Rear Panel

Rear panel layout specific to US and Canadian market models.

General Model Rear Panel

Rear panel layout for the general market model.

British, Australian, and European Models Rear Panel

Rear panel layout for UK, AU, and European models.

Technical Specifications

Internal View and Top Cover Disassembly

Internal Component Identification

Identification of key components visible from the top view.

Top Cover Removal Procedure

Step-by-step guide for safely removing the top cover.

Disassembly: Bottom Cover and Front Panel

Bottom Cover Removal Procedure

Step-by-step guide for safely removing the bottom cover.

Front Panel Removal Procedure

Step-by-step guide for safely removing the front panel.

Circuit Board Removal Procedures

Guides for removing specific circuit boards from the unit.

Disassembly: Transistors and Transformer

Power Transistor Replacement

Step-by-step guide for replacing power transistors.

Power Transformer Removal

Step-by-step guide for removing the power transformer.

Adjustment Procedures

Pre-Adjustment Preparation

Essential checks and conditions before starting any adjustments.

Adjustment Points Overview

Identification of adjustment points and related diagrams.

Power Supply Troubleshooting

Control Circuit Board Check Points

Specific points to check on the control circuit board for diagnostics.

Control Circuit Board Operation Confirmation

Procedures to confirm the proper operation of control circuit boards.

Control Circuit Schematic - General Model

Control Circuit Schematic - Other Models

System Block Diagram

Exploded View: Front Panel

Parts List: Front Panel Components

Exploded View: Rear Panel

Parts List: Rear Panel Components

Parts List: Circuit Board Components

Related product manuals