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LG OM7560 Service Manual

LG OM7560
76 pages
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SERVICE MANUAL
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
Internal Use Only
Mini Hi-Fi AUDIO
APRIL, 2016P/NO : AFN77483239
MODEL: OM7560
MODEL: OM7560

Table of Contents

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LG OM7560 Specifications

Power IconPower
power consumption networked standby0.5 W
bus power supply (USB)5 V 0 500 mA
amplifier output power1, 000 W
Wireless Specifications IconWireless Specifications
frequency range2402 to 2480 MHz
output power10 dBm
minimum distance from body20 cm
Weight and Dimensions IconWeight and Dimensions
dimensions330 mm x 815 mm x 302 mm
net weight16.8 kg

Summary

Section 1 - General Information

Servicing Precautions

Safety and handling instructions for servicing the unit, including pick-up care.

ESD Precautions

Guidelines for handling electrostatically sensitive devices (ESD) to prevent component damage.

Hidden Key Mode

Instructions for activating and using the hidden key mode for special functions.

Service Information for EEPROM

Procedures for accessing and managing EEPROM data, including clearing and writing.

Program Download Guide

Steps for downloading firmware for Audio, CD, and EQ programs via USB.

Specifications

Technical specifications for the device's general, input, tuner, and amplifier features.

Section 2 - Cabinet and Main Chassis

Disassembly Instructions

Step-by-step guide for disassembling the unit's cabinet and main chassis components.

Exploded Views

Detailed diagrams showing the assembly of cabinet, main frame, mechanism, and accessories.

Section 3 - Electrical

One Point Repair Guide

Troubleshooting guide for specific single-point failure issues with detailed steps.

Electrical Troubleshooting Guide

Flowcharts for diagnosing and resolving common electrical problems in the unit.

Waveforms of Major Check Points

Oscilloscope waveform examples for key test points to aid in troubleshooting.

Wiring Diagram

Diagram illustrating the internal wiring connections between different modules and components.

Block Diagrams

High-level diagrams showing the functional blocks and signal flow within the system.

Circuit Diagrams

Detailed schematics of various circuits including SMPS, DSP, AMP, and I/O paths.

Circuit Voltage Chart

Table listing voltage measurements at IC inputs and capacitor locations for diagnosis.

Printed Circuit Board Diagrams

Visual layouts of the physical PCB components for SMPS, Main, Top Front, and other boards.

Section 4 - Mechanism (DM19AC)

Deck Mechanism Parts Locations

Lists and diagrams showing the location of various parts of the deck mechanism.

Deck Mechanism Exploded View

Detailed exploded view diagram of the DM19AC deck mechanism for assembly reference.

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