Yamaha XM4220 User Manual

XM6150/XM4220
1
SERVICE MANUAL
PA
011495
20000301-140000
1.5K-2501 Printed in Japan ’00.02
HAMAMATSU, JAPAN
CONTENTS
SPECIFICATIONS ................................................3/4
PANEL LAYOUT .................................... 5
CIRCUIT BOARD LAYOUT ................. 6
BLOCK DIAGRAM ............................ 8
DISASSEMBLY PROCEDURE .............................. 9
IC BLOCK DIAGRAM ................................. 13
DIMENSIONS ......................................................... 13
CIRCUIT BOARDS ...................................... 14
INSPECTIONS .......................................................24/25
PARTS LIST
OVERALL CIRCUIT DIAGRAM
XM6150
XM4220
XM6150/XM4220
POWER AMPLIFIER

Yamaha XM4220 Specifications

General

Brand	Yamaha
Model	XM4220
Category	Amplifier
Language	English

Summary

SPECIFICATIONS

PANEL LAYOUT

BLOCK DIAGRAM

DISASSEMBLY PROCEDURE - Chassis Components

INSPECTIONS

Preparation and Basic Tests

Steps for setting up tests and performing initial checks like fan and muting.

Electrical Performance Tests

Detailed tests for gain, frequency response, distortion, and noise levels.

Stability and Protection Circuit Tests

Procedures for testing amplifier stability and the operation of protection circuits.

Power Consumption and Limiter Tests

PARTS LIST

OVERALL CIRCUIT DIAGRAM