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Yamaha CR-440 Service Manual

Yamaha CR-440
20 pages
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Yamaha CR-440 Specifications

General IconGeneral
TypeStereo Receiver
Tuning RangeFM, MW
Output150mV (line)
Frequency Response20Hz to 20kHz
Input Sensitivity2.5mV (MM), 150mV (line)
Channel Separation40 dB
Speaker Load Impedance8 ohms

Summary

Front Panel Controls

Front Panel Controls Overview

Comprehensive listing of all controls and indicators on the front panel.

Front Panel Switches and Jacks

Details the function of switches like Power, Muting, Mode, and input/output jacks.

Front Panel Dials and Meters

Explains the tuning scales, signal meter, and tuning meter indicators.

Rear Panel Layout and Connections

Antenna and Ground Terminals

Identifies rear panel terminals for AM/FM antennas and ground connections.

Audio and Power Interfaces

Lists audio output jacks, AC outlets, and power cord connection points.

Disassembly Procedures

Cover Removal Steps

Instructions for safely removing the top, bottom, front, and rear panels.

Technical Specifications

Audio Performance Specifications

Details output power, frequency response, distortion, and input sensitivity.

Tuner Performance Specifications

Covers FM/AM tuning range, sensitivity, selectivity, and signal-to-noise ratios.

General Unit Information

Includes semiconductor types, power consumption, dimensions, and weight.

System Block Diagram

Dial Mechanism Assembly

Tuning Dial Drive System

Illustrates the belt-driven mechanism for the tuning knob and dial pointer.

Internal Component Identification

FM Tuner Adjustment Points

Locates variable capacitors and coils for FM tuner alignment.

AM Tuner Adjustment Points

Identifies trimmers and coils for AM tuner adjustments and calibration.

Tuner Alignment Procedures

FM Tuner Alignment Steps

Step-by-step guide for aligning FM discriminator, tracking, and sensitivity.

AM Tuner Alignment Steps

Procedures for adjusting AM local oscillator, sensitivity, and signal meter.

Wiring Diagrams

USA/Canadian Model Wiring Details

Wiring schematic specific to North American market models.

Circuit Board Connectivity

Illustrates wiring between main, tuner, and other circuit boards.

Parts List Overview

Exploded View Diagram (1)

Front Chassis Assembly

Illustrates the assembly of front panel components and chassis structure.

Rear Chassis Assembly

Shows the arrangement of rear panel components and internal chassis parts.

Exploded View Diagram (2)

Internal Component Layout

Diagram showing placement of heatsinks, transformers, and major boards.

Front Panel Sub-assembly

Details the assembly of front panel controls, switches, and indicators.

Parts List - Panel and Front Components

Panel Units and Meters

Lists panel components, tuning meters, and signal meters.

Switches, Knobs, and Jacks

Details push buttons, knobs, and input/output jacks.

Parts List - Dials and Fasteners

Dial Scales and Indicators

Lists dial scales, pointers, lamps, and luminary components.

Screws, Clips, and Small Parts

Details various fasteners, clips, and minor assembly parts.

Parts List - Capacitors

Electrolytic and Ceramic Capacitors

Lists various electrolytic and ceramic capacitor types and values.

Mylar, Styroflex, and Other Capacitors

Includes mylar, styroflex, and other specialized capacitor types.

Parts List - Resistors and Transistors

Resistor Components List

Lists carbon and metal oxide film resistors by value and type.

Transistor Components List

Details the various transistor types used in the unit's circuitry.

Parts List - Fuses, Coils, and Filters

Fuses, Relays, and Switches

Lists fuse types, relay components, and rotary switches.

Tuner Coils, Filters, and Inductors

Details tuner coils, AM antenna coils, IF filters, and inductors.

Parts List - Variable Components and ICs

Variable Resistors and Potentiometers

Lists variable resistors, potentiometers, and semi-fixed resistors.

Integrated Circuits (ICs) and Diodes

Details integrated circuits, diodes, LEDs, and Zener diodes.

Parts List - Resistor Values (R101-R233)

Resistor List by Value (R101-R164)

Lists various resistor values and types from R101 to R164.

Resistor List by Value (R201-R233)

Lists various resistor values and types from R201 to R233.

Parts List - Transistors and Special Components

Transistors and Diodes

Lists various transistor, diode, and Zener diode components.

ICs, Connectors, and Hardware

Details integrated circuits, connectors, shields, and hardware.

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