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LG CM8440 Series User Manual

LG CM8440 Series
79 pages
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Mini Hi-Fi System
SERVICE MANUAL
MODEL: CM8440
(CM8440, CMS8440F/W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
MODEL: CM8440 (CM8440, CMS8440F/W)SERVICE MANUAL
P/NO : AFN76932780 JANUARY, 2015
Website http://biz.lgservice.com
Internal Use Only
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LG CM8440 Series Specifications

General IconGeneral
BluetoothYes
CD PlayerYes
USB PlaybackYes
FM RadioYes
Playable File TypesMP3, WMA
Remote ControlYes
Radio TunerFM
ConnectivityBluetooth, USB

Summary

LG Mini Hi-Fi System Service Manual

Section 1: Summary

Overview of key service topics including precautions and specifications.

Servicing Precautions

Guidelines for safe and effective servicing of the unit.

Compact Disc Player Repair Notes

Important considerations for repairing CD player components.

ESD Precautions

Measures to protect against electrostatic discharge damage to components.

Hidden Key Mode

Special operational modes accessible through key combinations.

Service Information for EEPROM

Details on accessing and managing EEPROM data.

Program Download & Update Guide

Instructions for updating the system software via USB.

Specifications

Technical details and performance characteristics of the unit.

Section 2: Cabinet & Main Chassis

Exploded Views

Diagrams showing the assembly of unit components.

Cabinet and Main Frame Section (CM8440)

Exploded view of the main unit's cabinet and frame.

Mechanism Deck Section (DP17TM2)

Exploded view of the CD mechanism deck.

Packing Accessory Section

List and illustration of included accessories and packaging.

Speaker Section

Details and illustrations of the speaker units.

Section 3: Electrical

One Point Repair Guide

Troubleshooting common single-point failure issues.

Electrical Troubleshooting Guide

Systematic approach to diagnosing electrical faults.

Waveforms of Major Check Point

Key signal waveforms for diagnostic checks.

Wiring Diagram

Diagram illustrating internal wiring connections.

Block Diagrams

High-level functional diagrams of system components.

Circuit Diagrams

Detailed schematics of individual circuit sections.

Circuit Voltage Chart

Table of voltage readings for connectors and capacitors.

Printed Circuit Board Diagrams

Layout diagrams of the main electronic boards.

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